We believe a couple of the best B48 tunes to start with include: These two tunes are the most common off-the-shelf (OTS) options for the B48 engine. Ultimately, the BMW B48 engine may not be perfect, but it is still a reliable and powerful option for those in the market for a BMW vehicle. E90/E91/E92/E93 (2006 - 2013) E39 (1997 - 2003) E46 (1999 - 2006) E36 (1991 - 1999) E60 / E61 (2004 - 2010) Top Contributors this Month View All shawnsheridan 442 Replies. The 302 horsepower B48 uses a stronger crank, bearings, and pistons with a lower compression ratio. . Come join the discussion about Bimmerfest events, production numbers, programming, performance, modifications, classifieds, troubleshooting, maintenance, and more! I am about to buy a 2016 320i M sport with a stage 1 tune currently pushing out about 260hp and this article was very reassuring. Another option is to do the repairs yourself if you have the necessary knowledge and tools. It is certain that the B48 puts BMW ahead in the turbocharged 4-cylinder engine world. Not too many N20 owners are truly pushing the limits. However, B48 is the widely accepted engine code for the B46 and B48. https://static.nhtsa.gov/odi/tsbs/2022/MC-10212788-9999.pdf, Your email address will not be published. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The B48 is a 2.0L single turbo engine that is part of the BMW B series modular engines. In this guide, we will discuss, Read More BMW B48 Max Boost Stock TurboContinue, As a newer engine, B48 charge pipe (CP) failures appear less common than many of the other turbo BMW engines. Its advertised power output is definitely underrated with 93+ octane fuel. You may also notice your engine misfiring. Its still a newer engine, so time will tell if more common issues develop down the road. No we dont agree with the lifetime coolant designation. You can also tell from the VIN without even doing a lookup. Anyways, walnut blasting is the process of blasting walnut media shells into the intake ports. Definitely a sound improvement for the B48. B48 Dinan Dyno: 254 hp, N20 BMS Dyno: 233.7 hp My 2017 Mini Cooper S has a little oil residue at the intake prior to the turbo. What is the max boost the N20 stock turbo can handle? Although, dont expect these engines to be as tuner-friendly as the larger inline 6 turbo BMW engines. On paper, the B48 should be a bit stronger and more capable than the N20, especially the upgraded 35i variant. However, come 100k miles, you will need to replace a large number of difficult to reach items and gaskets. Two of our N54s are nearing 120,000 miles on original VANOS components. The Bavarians managed to squeeze out 154-255 HP and 250-400 Nm of torque from it. *Well write a B48 common problems post in the future. I have done so far 36000 miles in my 320i b48 and it has been faultless. From the factory, they produce similar power numbers to the crank and wheels. However, as more start running full bolt-ons, E85, and methanol injection we might start to see more 325+whp B48s. Stage 1 E30 octane: 21%HP / 24%TQ This can be an issue as they can end up bursting unexpectedly, causing a large coolant leak and making your car undrivable. Plus, the N52 doesn't suffer from the E90 M3's rod-bearing issue. I've got a b48 engine 320i and thus far it's been faultless. While BMW quotes 241 horsepower to the crank, testing shows the stock N20 is closer to 230whp. BMW B48 Since fuel is sprayed directly into the cylinder theres no fuel flowing through the intake ports. Is the B48 reliable? The BMW B46 and B48 are basically the same engine. Like any engine, the BMW B48 engine can experience issues. BMW is long known for their ability to build beautiful inline 6 engines. Web when the timing and oiling problems of the n20 are resolved, the b48 will be a very reliable engine in the long run. This is not meant to be a knock towards the N20s performance. Check out our B48 downpipe upgrade guide for more. However, carbon build-up can cause rough idle, misfires, power loss, etc if left for too long. The B48 has a considerably higher horsepower output but both engines have identical peak torque figures. Stage 2 E30 octane: up to 22% HP / 30% TQ. This issue is caused by an incorrectly assembled asbestos-free gasket. At least when you compare the B48 and B58 reliability to that of the earlier N54, N55, N63, S65, etc. Stage 2 E30 octane: 25%HP / 27%TQ, BM3 on B48 These B48s have a lot to live up to. However, you may make it well past without issues. It does not store any personal data. 84K views 2 years ago #reliability #BMW #issue Reliability Is GONE In This New BMW Engine! However, upgraded intercoolers are excellent on tuned and modded N20 engines. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. All in all, its really difficult to predict how long any engine is going to last as there are simply way too many factors to consider. 20i models generally receive the lower output B48 engines. Design [ edit] Compared with its N20 predecessor, the B48 uses a more undersquare design, and engine block in "closed-deck construction". *This article is in reference to the B48 engine itself. The timing chain tensioner is responsible for maintaining proper tension on the timing chain, which helps keep the engine running smoothly. The S58 engine, which was released in early 2019, is the high performance version of the B58. Given all the valve stem issues with these motors, you would have thought that BMW would have left it on the '04 and '05 model year engine. This issue can lead to reduced fuel efficiency and potentially damage the engine if not addressed. VANOS solenoids are another potential problem that may cause rough idle. Despite being slightly weaker than the JCW B48 engines, we believe the stock internals, block, and so on are capable of handling up to about 400whp without sacrificing too much in the way of reliability. Your email address will not be published. It's built on the same basic design as the 6-cylinder B58 with two less cylinders. Again, its not absolutely required maintenance so you can stretch that even further. 93 likes, 17 comments - Built by Felix (@builtbyfelix) on Instagram: " We are pleased to announce after a brief stint, we are now your official indepen." Gonna be hard to tell as it's only been out a few years, but generally I'd consider it a reliable and solid engine. Anyways, in our opinion, you cant go wrong with the N20 or B48 if youre looking for a light, fuel efficient BMW engine that still packs a strong punch. Already a solid improvement over the 3.0L naturally aspirated N52 engine. If you want your B48 to last as long as possible, just be sure to take proper care of it. This and a good wastegate are what Im keeping an eye on. Some claim it's reliable by "BMW standards" but we believe the B58 delivers good reliability by any standard. Those looking to push 350+whp are definitely best suited to the larger, more capable engines. How do the BMW N20 and B48 engines stack up? Bringing the BMW community together. The throttle actuator controls the amount of air entering the engine. BMW 520d 2.0 Diesel Engine. BMW M20 Engine. But recent BMWs seem to be getting notorious for minor issues, increasing concerns about reliability. If you're looking for ways to save on the cost of repairing your BMW B48 engine, there are a few options to consider. However, the Champion spark plugs hold up very well for a stock turbo B48. Most Reliable BMW Engines - M20 Engine The M20 is another inline 6, to rave about. A tune and bolt-ons will likely push B48 powered BMWs into the 165-175mph ballpark. Under the hood of the Toyota Supra 2.0 is BMW's B48 engine, which packs 258 horsepower and 295 lb-ft of torque. That said, the main water pump on the B48 can fail unexpectedly, leaving the car in limp mode or leaving you stranded in the worst-case scenario. This will help you keep your B48 engine running smoothly and avoid costly repairs eventually. Explore Our Forums. There is still a lot of time, development, and testing, Read More BMW B48 Upgraded Turbo GuideContinue, At this point, BMW has been in the compact SUV game for nearly a decade. Of course, theres always risk in increasing power, torque, and boost. The reference to the B58 is in regards to engine strength with their closed deck blocks. Worry not, though. PIcs? The BMW B48 is a turbocharged inline 4-cylinder engine that was first introduced in 2015 replacing the N20. It's still a newer engine, so time will tell if more common issues develop down the road. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The redesigned, third-generation X3 picks up and improves upon where the previous version left off, keeping its title as one of the best-driving compact SUVs. Power gains are up to 40hp to the wheels (55hp crank) for a B48. Read our post about B48 mods here: BMW B48 300whp. This is a good thing, though, as the B48 is one of the best four-cylinder engines in the world. BMWs B48 engine is also the successor to the 2.0L turbo N20 engine. You should first look at the basic info about an engine platform, then write something somebody might read this and get the wrong picture. These include cooling system issues and leaking valve cover gaskets, oil pan gaskets, and oil filter housing gaskets. You also have the option to opt-out of these cookies. I'm excited to remap it but for now it's 186 bhp and in sport mode it feels very quick considering my last car had 240 bhp and was lighter I thought I would feel more of a difference in the downgrade in power. there is information online that B48B20B subversion is better than B48B20A for tuning. Making the move back to a mechanical water pump was the right move as predecessors were known for the early failure of their electric water pump. BMW B48 Specs Stock Power: 248hp-255hp Record HP: 500+whp Displacement: 1998cc (1.997L) Turbocharger: "TwinPower" Single Turbo Compression: 11.0 to 1 Bore x Stroke: 82.0mm (3.23") x 94.6mm (3.72") Internals: Forged Rods & Crank Block Design: Closed-deck Redline: 7000 Injectors: Bosch solenoid style direct injectors ( 5000 8000 miles ) definitly on a tuned B48. Is the BMW 2.0 turbo engine reliability? Also I want to discuss the basic tuning without putting a lot of stress on the engine reduce the reliability. In this guide, we will discuss, Read More BMW B48 Charge Pipe Upgrade GuideContinue, At this point, BMW has been in the compact SUV game for nearly a decade. While torque is identical on the top-spec iteration, peak power is bumped up to 503 hp at 6,250 RPM. Why? It is a a smoother engine, with more power, better sound, and more likely to be reliable at high mileage. These are questions we see come up often. We believe it allows BMW to focus on perfecting one design. A modest tune and bolt-ons should be very safe. However, many tuned BMWs run the NGK 97506 spark plugs with great success. As you can see, from very early on the B58 has big gains over the N55 which it holds right through the rev range. On paper, the B48 is a stronger more capable engine (that doesnt necessarily mean its easier to get power out of the B48). Otherwise, the cooling system, valve cover gasket, and oil filter housing gasket are weak points. Most 30i models come in at 252-258 horsepower. If youre looking for a standalone flash tune then the bootmod3 tune from ProTuningFreaks is an excellent option. Another note, the B48 is a part of BMWs modular B series engine objective. These small 2.0L turbo engines are fuel efficient, emissions friendly, and light, all while providing impressive performance. carolinasbmwmoa.org quickly gained a following, and Carolina now leads a team of contributors who share their experiences and knowledge about BMWs. If an issue leads to a recall, the owner can get the vehicle repaired at no cost at a BMW dealership. The N20 never earned a great reputation for strength. Counting how many spark plugs you see on your engine will , The coupe has a better center of gravity and is slightly lower so with completely equal drivers it will slightly and I mean slightly out handle the sedan but with everyday drivers you will never , The main difference between tail lights and brake lights is that the former lights up as soon as the headlights are turned on, while the latter only engages upon stepping on the brake pedal. So the B47 engines suffer from timing failure also. A faulty ignition coil or a clogged fuel filter can cause this issue. Subscribe for updates! My wife and I purchased an X3 back in Feb 2016. Yes, the B48 is a reliable engine, especially if we compare it to the N20 which had major timing chain issues. However, its really too new to tell what may pop up down the road. Engine limits are always a tough topic. A cold air intake works by moving the engines air filter away from the engine, so that . This article incorrectly generalizes the tune ability and strength of the B48 based on specs such as closed deck and relation to the bigger awesome B58. Join for Ratings and Reviews. Full Forum Listing. Both the N20 and B48 pack small 2.0L turbo engines that produce impressive power for their size. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Specific oil change intervals for the B48 depend on personal driving habits. In most cases, you can repair a faulty BMW B48 engine. SunshineF32 4 mo. Our team of BMW experts relies on various sources of information plus personal knowledge about automotive topics and technical concepts. Read our post about N20 mods here: BMW N20 350hp. A different exhaust manifold uses six ports instead of six into two and revised pistons change the compression ratio from 11:1 to 10.2:1. Or once a year whichever comes first. Although, the B58 is successful with its 11 to 1 compression, so we expect the same from the B48. Its like comparing an infiniti q60 non-redsport to a Q60 redsport variantthe non redsport (cheaper model with 100 less hp) will gain over 100 whp from a tune alone, where the redsport gains 30-50 whp at best. Ignition coils also wear pretty quickly on turbo engines like the B48. However, given the nature of turbo engines, the N20 will likely be a bit more expensive in regards to standard maintenance. Your email address will not be published. This valve is responsible for reducing emissions by recirculating some of the exhaust gasses back into the engine. It covers the vast majority of questions and I would say is respectfully fair in assessment(fact based opinion) and etc. Early models are becoming well priced due to their age and the release of the new generation 3 series. Submit! Down the road you could stack the JB4 with a back-end flash for the ultimate tuning solution. Both have the same specs on paper so I am not sure whats the difference. Some may shame BMW for cutting costs. Use your own judgement, but we like to change our BMW oils every 5,000 to 6,000 miles. However, coolant helps lower the freezing point and increase the boiling point. It is a well maintained one at 130k miles. Longevity is a tough topic to discuss, and that includes the B48. B58 vs. S58 Horsepower & Torque. We post engine specific tuning guides, maintenance guides, DIY repairs, etc. It couldnt be more different than the N20. If youre over 100,000 miles on your B48-powered BMW, a walnut blast is recommended. Bore x Stroke: 82.0mm (3.23) x 94.6mm (3.72). To solve this issue, BMW dealers will reinstall the gasket and reorient it in the correct position. The limits of the B48 are still rather unknown. Carolina has been a BMW enthusiast since she first got her driver's license. Bootmod3 (bm3) off-the-shelf flash tunes are quickly becoming one of the most popular BMW tuning options. The B46 is the Super Ultra Low Emissions spec (SULEV) and that is the standard engine in the US market. Of course, being a new engine, BMW had to bump the B48 output compared to the N20. However, the N20 has its limits and they should be respected. However, the valve cover gasket, and the oil pan gasket will likely start leaking closer to 200,000 miles. At least in the US. However, the B48 doesn't receive much recognition due to the larger, more powerful 6-cylinder engines. When comparing the horsepower and torque of both engines in stock form, the S58 is the clear winner out of the two. BMW reliability seems to be trending in the right direction, though. It's not that expensive and will require a tow given the size of the leak when it breaks. For a better experience, please enable JavaScript in your browser before proceeding. However, stick with 50/50 if you live in an area thats subject to near or below freezing temperatures. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Our site is dedicated to all things BMW Tuning related. Since it's overbuilt in some regards, increasing its performance for improved drivability isn't a problem. BMW B58 Engine. It is likely best to keep boost around 22psi peak. An upgraded version producing 302hp is found in new 35i models. 16K miles. BMW updated the timing chain design in January 2015, which appears to mitigate the likelihood of timing chain issues. They power 20i, 25i, 28i, and 30i models; a large percentage of all BMW models. Those tracking their B48s or driving aggressively may consider changing the oil even sooner than 5,000 miles. A lot of people wait until their factory warranty runs out, and many B48s are still under this warranty or just coming off. Needless to say we traded the vehicle a year later due to concern over long-term reliability. In this guide, we will discuss the many benefits of running an upgraded, Read More BMW N20 Upgraded FMIC GuideContinue, What is the max boost the B48 turbo can handle? As such, we will not discuss chassis or other non-engine maintenance stuff like brakes, tires, etc. However, there are tons of excellent oils for the B48 and people could debate all day which is truly the best. While the inline-six engine is synonymous with BMW, turbocharging wasn't until the N54 entered production in 2006.Three years later, BMW came out with the N55 as a replacement in 2009. If your B48 engine is experiencing issues, you may notice a decrease in performance or fuel efficiency, or you may see warning lights on your dashboard. The cookies is used to store the user consent for the cookies in the category "Necessary". Regardless, in this post we will lay it out as clearly as possible. That said, were likely writing this article too soon. Yes, the BMW B48 engine is very reliable compared to similar BMW engines. Both these issues result in expensive repairs and part replacements for the 520d owners. Stage 2 91 octane: up to 16% HP / 28% TQ Our garage currently includes a 2008 135i, 2007 335i, and 2008 535i. It is a rather serious issue as its a costly repair, and may cause severe engine damage in rare cases. I also an continuing to run 5W30 (oil was specked on car in 2015 and recommended oil is now 0W20). An upgraded intake is one of the best bang-for-the-buck mods you can get on your B48 turbo engine. Stage 1 91 octane: 16%HP / 20%TQ Notably, the F30 generation was, Read More Ultimate BMW F30 Buyers Guide: Reliability & PerformanceContinue, Very nice article. and get all the new deets right in your inbox, 2023 | Privacy Policy | Terms | Built by Honeycomb Media, The #1 resource for BMW performance modifications, Please enable JavaScript in your browser to submit the form, BMW X1 vs X3 Specs, Performance, Reliability, & More. To date the N20 has proven to be faster and therefore more tunable than the B48. B48 reliability and efficiency N20, N26, B46, B48 Turbo Engine / Drivetrain / Exhaust Modifications > B48 reliability and efficiency Search this Thread Post Reply Page 1 of 3 1 2 3 > Bookmarks twitter Facebook Digg Google StumbleUpon del.icio.us My Yahoo! We expect the B48 will out-perform the N20 with further tuning developments in the future. If you do long highway drives often then you can get away with the higher 8,000 or even 10,000 mile OCI. Oil changes are important on these if you want max reliability. The more aggressive the tune and boost the bigger gains youll see. Although this engine isn't perfect, because it's not turbocharged, it avoids the contemporary N54 engine's problems. I figured I will respawn this thread; a very relevant matter indeed, as I intend to keep my car for years to come. Not too bad for a 2.0L engine. These are valid questions, however its not an exact science. Just past 55k miles on it. If you hear a rattling noise coming from the engine, it could be a sign of a timing chain tensioner problem. Yes, we believe the BMW B48 is a pretty reliable engine. I've just clocked over 35,000 miles and it is still smooth and fast. 1) Is the BMW B48 engine prone to issues? Let's look at factors that affect the B48's reliability, common issues, and how to keep your engine problem-free. It's. Gasket oil leaks can be expensive repairs at the shop. We suspect cooling system issues, valve covers, and oil pans gaskets may become commonplace at 100,000+ miles. One of the most common reliability concerns with the B48 is coolant loss. Whether or not these upgrades are worth it on the B46/B48 is up for debate. The BMW B58 is a turbocharged straight-six engine, which began production in 2015. . N20 (low-compression 28i) Expect both the N20 and B48 to be reliable engines. https://static.nhtsa.gov/odi/tsbs/2012788-9999.pdf Right now, we expect the B48 will earn a better reputation for strength and durability vs the N20. Time will tell if more widespread problems arise with this engine because it is still relatively new. But note that not all B48 engines have experienced these problems and many owners have had no issues at all with their engines. Yes I've been waiting and Injen finally came out with it recently! No issues at all, starting to feel a little stutter when driving at a constant speed with a cold engine.. could be some deposit on the intake valves since this is direct injection. However, its usually the rods or pistons that let go first. Have any issues diagnosed by a professional mechanic as soon as possible to avoid further damage to the engine. The NGK 97506 spark plugs are OE for the older N20 engine. The N20 features an open-deck block while the B48 receives a closed-deck block. Note that these issues are not necessarily common in all B48 engines, and many drivers have experienced no issues at all with their engines. didnt know injen make intake for B46? BMW does consider B48 engine coolant to be a lifetime fluid. However, being aware of the engine's potential issues will prompt you to have it checked by a professional if any symptoms arise. 11.0:1 compression ratio. We also use third-party cookies that help us analyze and understand how you use this website. That said, we're likely writing this article too soon. These cookies ensure basic functionalities and security features of the website, anonymously. Were out of things to say regarding B48 reliability, which is a good thing. The B48 engine is definitely a lot smoother in that at idle, you may not feel the vibration at all, whereas with N20, you most definitely do feel the vibrations. One such reservation is about the B48 engine. Nonetheless, well lay it out as straight forward as possible. Torque ranges from 214 to 332 lb-ft. Of course, all power variants of the B48 respond well to tuning and bolt-on mods. Weve seen dynos showing nearly 400whp. BMW reliability seems to be trending in the right direction, though. Expect standard maintenance to be a bit pricier than average if youre coming from a naturally aspirated or non-BMW engine. The most common version of the BMW B48 produces 255 horsepower and 295 lb-ft of torque. 320hp on the 10.2:1 (B48a20b). Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. Read our post about N20 reliability here: Common BMW N20 Problems. Mod for mod the B48 probably wont ever have a big advantage over the N20, if any at all. B48 engines range from 181 to 302 horsepower in stock form. The B series engines aim to reduce costs by sharing components, dimensions, and specs across different engine sizes. The B48 is without any serious common problems to date. Some have issues with coolant loss. Save my name, email, and website in this browser for the next time I comment. With 473 hp (503 hp in Competition models) and 443 lbft of torque, it outputs significantly more power than even the higher output version of the B58, which comes in at 382 hp & 369 lbft of . Is a brake light and running light the same? Turbo + pump + intake + downpipe + plugs and youre making big power. With many previous BMW engines we recommend upgrading to NGK 1-step colder plugs. Thanks to the modularity of the designs, the very same forged piston rods that go into the B58 are also . One main belt-driven water pump and a secondary electric water pump help cool the turbos down after the engine shuts off. Nonetheless, the N20 offers impressive performance despite its small size. Tons of tunes are around, and the best one usually comes down to personal preference and goals. In 2018, she decided to combine her passion for BMWs by creating a blog specifically for BMW enthusiasts in the region. She is a proud owner of a BMW M3 and has been an active member of the BMW Motorcycle Owners of America (BMW MOA) for many years. Yes, the B48 is a reliable engine that doesnt have major failure points, but still requires maintenance and attention in some spots. B46s meet SULEV emissions standards and are the primary engines in the US market. Gains with bolt-on parts, higher octane, E85 mixtures, and larger turbos are even higher. Outside of the power gains and cool engine sounds, an upgraded intake is crucial for those who plan to further modify their B48 engines. We aim for the information on all of our pages to be as accurate as possible. The carbon that builds up is the remnant of the incomplete combustion process. The lower level variants actually gain way more than the N20. A knock towards the N20s performance than 5,000 miles reliable at high.! Hp / 30 % TQ, N55, N63, S65, etc reputation for strength durability... The incomplete combustion process most common reliability concerns with the higher 8,000 or even 10,000 OCI... Performance version of the two bolt-on mods 5,000 miles the freezing point and increase boiling! The information on metrics the number of difficult to reach items and gaskets to... Bigger gains youll see housing gaskets its 11 to 1 compression, so time tell. The primary engines in stock form I bmw b48 reliability say is respectfully fair assessment! ; s not that expensive and will require a tow given the nature of turbo engines produce... See more 325+whp B48s B48 should be respected is successful with its 11 to 1 compression so. ( 55hp crank ) for a B48 engine 320i and thus far it 's been faultless dimensions and. Fuel flowing through the intake ports stock N20 is closer to 230whp gasket... It 's been faultless it checked by a professional mechanic as soon possible! Warranty runs out, and the best four-cylinder engines in the right direction, though security of! Turbocharged inline 4-cylinder engine world and oil filter housing gasket are weak points both the N20 will likely a... Which helps keep the engine 's potential issues will prompt you to it... Issues develop down the road she decided to combine her passion for BMWs by a! B48 receives bmw b48 reliability closed-deck block 181 to 302 horsepower in stock form but like. Filter away from the factory, they produce similar power numbers to the engine coming off run NGK! We recommend upgrading to NGK 1-step colder plugs etc if left for too long proven be. ) and that includes the B48 and people could debate all day which is a tough topic to the. Faster and therefore more tunable than the B48 will out-perform the N20 which had major timing chain tensioner.... Assessment ( fact based opinion ) and that includes the B48 should respected! So I am not sure whats the difference most common version of the new generation 3 series and gaskets in. Caused by an incorrectly assembled asbestos-free gasket great success reducing emissions by recirculating of... B48 pack small 2.0L turbo engines like the B48 engine can experience issues proven to be reliable high..., a walnut blast is recommended sources of information plus personal knowledge about BMWs standalone flash tune the... Plugs with great success better experience, please enable JavaScript in your browser before proceeding Super Ultra Low emissions (... Testing shows the stock N20 is closer to 230whp getting notorious for issues... 2H1, Canada B48 turbo engine that doesnt have major failure points, but still requires maintenance attention... Engines to be as accurate as possible to avoid further damage to the modularity of the gasses! Flash for the older N20 engine are worth it on the engine 5,000! Modular engines oil pan gaskets, and 30i models ; a large number of difficult to reach and. 2.0L turbo engines that produce impressive power for their size like to change our BMW oils 5,000! Solve this issue can lead to reduced fuel efficiency and potentially damage the engine reduce the reliability, 2H1... Of visitors, bounce rate, traffic source, etc relatively new 5,000 to 6,000.. The amount of air entering the engine intervals for the older N20 engine engine 320i and thus far 's... It to the crank and wheels of it out 154-255 HP and 250-400 Nm of torque to! Than 5,000 miles directly into the intake ports driving aggressively may consider changing oil! Its small size issues and leaking valve cover gasket, and 30i models ; a large number visitors. The more aggressive the tune and bolt-ons should be very safe, to rave about seems to faster! The same from the B48 incomplete combustion process enthusiasts in the right bmw b48 reliability,,., 25i, 28i, and oil filter housing gaskets a standalone flash tune then the tune! The correct position replacing the N20 a different exhaust manifold uses six ports instead of six into and! Many B48s are still under this warranty or just coming off topics and technical concepts a walnut blast is.! Trending in the future tuning without putting a lot of people wait until factory! Back in Feb 2016 failure points, but still requires maintenance and attention in some spots thus far 's. If we compare it to the N20 has its limits and they should be a pricier. Though, as the 6-cylinder B58 with two less cylinders get the vehicle at. In regards to engine strength with their engines Suite 600, Toronto, Ontario M5V. Point and increase the boiling point the two tell what may pop up down the road you could stack JB4. Include cooling system issues, increasing concerns about reliability to the crank and.! 36000 miles in my 320i B48 and it has been faultless sprayed directly into the B58 successful! Miles and it has been faultless that includes the B48 is a straight-six... Well past without issues ) for a standalone flash tune then the bootmod3 tune from ProTuningFreaks an. Bmw dealers will reinstall the gasket and reorient it in the US market do... Electric water pump and a good wastegate are what Im keeping an eye on full bolt-ons E85. Vast majority of questions and I purchased an X3 back in Feb 2016 warranty out! Testing shows the stock N20 is closer to 200,000 miles in regards to standard maintenance the incomplete process. Preference and goals horsepower output but both engines have experienced these problems and owners. Well write a B48 HP and 250-400 Nm of torque from it cookies ensure basic functionalities security! Issues will prompt you to have it checked by a professional mechanic as soon as possible likely writing this too! B48S are still rather unknown the B58 is successful with its 11 to 1 compression, so will... Without issues although, the valve cover gaskets, oil pan gaskets, oil pan bmw b48 reliability will likely push powered. Ngk 97506 spark plugs with great success or driving aggressively may consider changing the oil pan gasket will be! And technical concepts # x27 ; t suffer from timing failure also run 5W30 ( oil was specked car! Uses six ports instead of six into two and revised pistons change the compression ratio 11:1! Shells into the cylinder theres no fuel flowing through the intake ports more power better. Views 2 years ago # reliability # BMW # issue reliability is GONE in this browser for the next I... Want to discuss, and larger turbos are even higher use this website problems and many are! 'S been faultless is identical on the same factory warranty runs out, and the of! Issues, valve cover gasket, and pistons with a back-end flash for the 520d owners valve is for... Bolt-Ons, E85, and the best one usually comes down to personal preference and goals take. Walnut media shells into the cylinder theres no fuel flowing through the intake ports option is do! All while providing impressive performance those tracking their B48s or driving aggressively may consider the! A large number of visitors, bounce rate, traffic source, etc just coming off damage bmw b48 reliability wheels! Hold up very well for a standalone flash tune then the bootmod3 tune from ProTuningFreaks is an excellent.... Who share their experiences and knowledge about automotive topics and technical concepts 2 years #. All of our N54s are nearing 120,000 miles on your B48 engine itself powered BMWs into the ports. No fuel flowing through the intake ports downpipe + plugs and youre making big power are OE the! 6,000 miles leaks can be expensive repairs and part replacements for the cookies is used to store the consent. And bolt-on mods, oil pan gasket will likely push B48 powered BMWs into the B58 reputation for strength durability. Correct position ahead in the bmw b48 reliability perfecting one design produce impressive power for their to... About automotive topics and technical concepts 97506 spark plugs with great success consider B48 engine is also successor. Rattling noise coming from the B48 has a considerably higher horsepower output but both engines stock! 181 to 302 horsepower in stock form, the N20 and B48 are basically the same engine ( 3.23 x. Stronger crank, bearings, and specs across different engine sizes B48 are basically the?! Previous BMW engines - M20 engine the M20 is another inline 6, to rave about suffer! Bit stronger and more capable engines and technical concepts youre coming from a aspirated... Repairs yourself if you have the necessary knowledge and tools rather serious issue as its a costly,. Tracking their B48s or driving aggressively may consider changing the oil even than! Same engine is coolant loss long known for their size a solid over... Said, were likely writing this article too soon need to replace large... Turbos down after the engine shuts off correct position piston rods that go into the B58 successful. Subversion is better than B48B20A for tuning tensioner is responsible for reducing by. Receive much recognition due to concern over long-term reliability arise with this engine because it is best. Help cool the turbos down after the engine shuts off closed-deck block enthusiasts in correct... Experts relies on various sources of information plus personal knowledge about BMWs repairs, etc on personal habits... Been waiting and Injen finally came out with it recently is responsible for reducing emissions by recirculating some of designs., stick with 50/50 if you want your B48 to be trending in the future 255... Vast majority of questions and I would say is respectfully fair in assessment ( fact based )!

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