Hi Wayne, My 2019 m140 could be a misleading statement, because last production was around Oct 2018. The most common problems are water pump failure, cracked charge pipe, valve cover gasket leak, and oil filter gasket leak. The B58 has more horsepower and torque then the N55. Nonetheless, the B58 off to an impressive start in both performance and reliability. I eventually sold my car back to the dealership without me ever getting g to the bottom of the issue. BMW UKS reply was change valvetronics and re-programme. Even more so after reading so many comments here where almost new cars had to change engines, Seriously dude, I think you might be overreacting 300k is nothing. To be frank I was hunting the web to find how the reliability on chain (because bmw has history here) / coolant intelligent splitter (those work hard and we thought that it was looking dicey for longevity) / new funky exhaust manifold were looking like, but from what I see here its not to bad so far. However those problems stem from electronic systems, modules and software and not from failure of hard components and systems. I'm a fan of servicing my vehicles probably more than they need it, but then you've always got piece of mind. I've got a 1986 merc 300sl that runs like a sowing machine. This can result in oil-rich gasses being pumped into the intake manifold. Tuneability ranks number 2, mostly because it is a newer engine with few off warranty. Though, it may be excessive on lower mileage B58's. Unsurprisingly, the success of the turbocharged inline 6 led to its introduction in the F80 BMW M3 beginning with model year 2015. Why? Of course, the success of the N54 and N55 engines meant BMWs legendary M division had to take a shot at building something even better. Im experiencing the same as you when the car is under load. Reliability scores the highest marks compared to the N54, N55, and S55. Do you want to get more excitement out of your B58-powered BMW? The B58 has proven to be the most reliable modern BMW engine, perhaps as reliable as the naturally-aspirated N52. Once youve done it a few times it becomes very quick and easy. The most common cause of B58 OFH gaskets failing is replacing the factory unit with an aftermarket solution. We appreciate the positive feedback. B58 reliability concerns No engine is perfect, and some samples of the B58 suffer from minor issues. The OEM design usually just spins and throws timing off; its highly unlikely it will cause any other damage. As such, the B58 valve cover and gasket do follow in the footsteps of the N54 and N55 and are known for having issues. Perform oil changes every 5,000 to 8,000 miles. I had the 4.2 I6 in both my 1975 Landcruiser (FJ40) and my 1978 Jeep CJ-7. Just a question of how the other internals fare. This applies to coolant hoses and coolant connecting flanges. The N55 was replaced in 2016 by the B58. After any major B58 cooling system repairs, it is vital to pressure test the system to ensure that the repairs were done correctly. And for those with lots of money to spend theres the Ford BARRA 4.0 straight six engine! or these are minor for this strong engine? Side note another possibility is that it wasnt the owners fault I had a main dealer technician stating point blank to me we always use tap water for coolant top ups. Last replaced plugs and coils at 190K. Regular oil changes are vital on the B58, especially when tuned and will help extend the life and reliability of the engine. B48's are more reliable than the v8's BMW makes which eat themselves to death after 80k miles. Just purchased a 2021 M340. Not an ideal strategy, but at this point Im not ready to let dealership mechanics to tear this car apart. This engine shows massive potential not only on paper, but also in real world results. Lastly, issues with waste-gate rattle were mostly resolved on the N55. Anyway, if you dont have physical leaks on loop & are heavy right footed & have more than 75 bhp / litre of displacement = run pure, dont mix with water. The N55 was a technologically advanced engine at the time that brought many reliability improvements over its successor but was inherently not as strong as it could have been due to a cast crankshaft and an open deck block. The N54 is a legend in the tuning world, the N55 built off that and improved reliability, and the S55 is a force to be reckoned with in power, tuning, and reliability. I imagine a lot of (even most?) Right by the timing chainat the back of the engine. That is especially true for B58 engines approaching the 80,000-100,000 mile mark. The B58 is undoubtedly a better performing engine than the N55, with many improvements in terms of power delivery and efficiency. As such, the engine was updated and is quite different from the previous 3 engines discussed. It is usually just one of the sensors but I would do both anyway. For that reason, the B58 scores the worst value rating. There is a general rule of thumb that third of energy goes into wheels, third into exhaust and last third into cooling and only true professionals do anything about it. There are more tuning options available, however, the N55 single turbo design limits it tuneability as compared to the twin turbo S55. Hi All what a great site you have! Whats your thoughts on this? So much so that I'd prefer it over the N55. What are your thoughts and experience with the B58? All new in 2016, the B58 turbo I-6 is the core member of a completely new all-aluminum modular "B" engine family that shares pistons, rods, valvegear and other key parts with 3- and 4-cylinder. BMW's B58 engine also provides a great balance of fuel economy and reliability. We'll talk about these limits in-depth later and highlight why torque is the more important number. perhaps look for a used Audi 4 wheel drive convertible. Required fields are marked*. Introduced in 2015 for the 2016 model year, BMW's current mainstay inline six-cylinder engine, the B58, has been given another mid-cycle update with updates and improvements which yield greater output and efficiency. Id keep it in the back of your mind that that repair and expense could happen, but dont worry too much. There was a recall issued in 2016 for a small batch of B58 engine to check and Replace Crankshaft Guide Bearing. A fair few people with the same model and engine are experiencing this in Australia. Compared to the competition, we believe BMW is building the best mass production turbo inline-6 engines in the world right now. We use cookies to improve your experience on our website. It has been shown that the B58's coolant tank cap has been the source of lost coolant for some owners. This isn't absolutely necessary but will help get any possible filter debris out of the oil. A tune and bolt-ons will take the B58 into the 400whp+ range; outstanding for a 3.0 L engine, but nothing insane compared to BMW's other inline-6 turbo engines. Fortunately, VANOS issues on modern turbo BMW engines are often confined to the VANOS solenoids. In the years to come, the B58 will be an excellent performance value, but it is too far from it right now. Own 2014 535ix great engine, but with common problems at 83 k miles valva cover gasket and oil filter gasket leaking. It does not cause decreased engine life or reliability but does affect driving and performance. To cut right to the chase, I love the direction the BMW B58 is going. I have a 2011 535i M Sport with 200k miles. Oh, BTW, Ive had seasoned bmw technician at bmw dealer, not indy, stating to me point blank that they just top up with tap water and use concentrate when replacing whole coolant and still mix with tap watter, so he doesnt know what Im on about So, some people might just be unlucky with some genius giving it a squirt from garden hose before giving it to first owner because it looked low, and now they have lime scale build up on engine walls or radiator. Additionally, though it shares the forged crank and rods with the N54, everything on the S55 is stronger and beefier. ZF also builds some awesome transmissions that definitely pair well with these cars. Flush out and refill coolant every 5 years. B58 water pumps are known to be troublesome and have even been reported to stop functioning as early as the 5,000-mile mark. Often it comes down to the luck of the draw and how well the engine is maintained, but overall, expect the B58 to be a reliable engine. Your comments are welcomed. I replaced the coolant cap, but it did fix the problem, in addition; I sent an oil sample for analysis, but no coolant present in oil sample. Replacing B58 VANOS components does NOT require lifting the engine. Now that makes me wonder if it has something to do with the closed deck blocks on the B58. BMW's B58 and S55 engines are newer, so more issues may pop up down the road. The M340i is a beautiful car and the B58TU is a great engine. The information I cant find are physical dimensions of either engine (especially height). Many B58 owners are experiencing low coolant in the main tank. Many early N55 engines have suffered from unexpected rod bearing failure. Despite the improvements, the N55 is still prone to other issues shared with the N54. Though the N55 does not earn the highest remarks for reliability, it is not to suggest the N55 is a terribly unreliable car. Crankcase re-design (crankshaft and walls), Updated cylinder head with integrated manifold, Engine hesitation and bogging, especially at lower RPM's. Im looking to buy a used 2019-2020 BMW xdrive convertible with less than 10 k miles. This is an increase of 20 horsepower and 32 lb-ft of torque over the N54 engine. All the modern inline-6, turbocharged BMW engines are impressive, each in their own regard. Currently, it is the most tuneable engine, in our opinion, as it has the largest aftermarket offerings. Maybe FORD forums are for you? Developed & Maintained by It is more of a testament to just how good the two remaining engines are. Copyright 2021 - 2023 BMW Tuning LLC. My '86 CJ-7 had the Inline 6, 258 cu. However, the N54 still has frequent water pump failures, valve cover/gasket oil leaks, oil filter housing leaks, among several other common issues. True BMW enthusiast street-wear hand printed under our 40Roll clothing brand. Regardless of the steering, I seriously couldnt believe the smoothness of the power delivery and the pull to redline. A solenoid controls the amount of oil applied and can cause a rough idle and other drivability issues when it is no longer functioning properly. Although the B58 uses similar rubber VCG's, the engine has one advantage. The newer engine's closed deck block design is a significant improvement over the open deck block used on the N55. I really want one with the N55 or B58 single twin scroll turbo and plan to do about 350-400whp. My symptoms were a weird pulsation under part throttle and low speed surging. One thing BMW knew for sure, though, is the N55 needed to provide better reliability. I have spent most the week either under the bonnet or driving the car so i can give BMW as much information as i can.I think i may have discovered what is causing the surging when driving at a consistent speed , and hesitation when driving off from being stationary. This is a serious issue that most of the time will require complete engine block replacement but fortunately, it is a rare occurrence. *Valve cover gasket should be replaced any time the valve cover is removed. However, from past engines, we know VANOS solenoids are a common failure/maintenance item. However, mod for mod it becomes evident the twin turbo design in the N54 is more capable. Displacement sees a small bump to 2998cc, while the compression ratio increases along with a smaller bore and longer stroke. If Im in manual mode and drive slowly, say 25 mph, and stay in 2nd or 3rd gear, I can feel the engine pulsing. Woodcliff Lake, NJ - Jan. 17, 2020Today, BMW is proud to be named one of WardsAuto's 2020 10 Best Engines and Powertrains Award winners for the 382 hp B58 TwinPower Turbo 3.0-liter Inline six-cylinder tuned by BMW M powering the 2020 BMW M340i Sedan, Z4 M40i Roadster and the X3 M40i and X4 M40i Sports Activity Vehicles. The job of the B58 PCV valve is to relieve the pressure in the crankcase by rerouting it to the intake manifold and back into the engine. (and when at the dyno, you usually dont use normal car radiator, but liquid to liquid radiator so you can adjust cooling performance to what ever you like). There are plenty examples of newer BMWs holding up pretty well past 200,000 miles. what it was please. Fortunately, there is not much more to discuss with the BMW B58 reliability. It is also known as a straight-six naturally aspirated engine. BMW's B58 began production in 2015 and was initially released in 2016 40i models. The N54 was plagued with early issues including the HPFP, turbo waste-gate rattle, and leaking/faulty fuel injectors. Not sure which car you refer to when you say single turbo. Once removed there is no way for BMW to tell the car was ever tuned. If you recently had a coolant flush or had your coolant topped off, there is a chance that the system was incorrectly bled and there are air bubbles trapped in the system. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This is a wonderful post so clear and easy to follow. Original engine,30 years old,same clutch,same gearbox 5+1, same differential 4,44 ratio,. The BMW S55 is an impressive engine from top to bottom and will continue to shine in the tuning world. These leaks commonly develop around 70,000 to 100,000 miles. Since the initial release of the BMW N54, the engine has gained quite a positive reputation in the tuning community. Minor leaks may not produce enough smoke to notice. Hi the B58 is not the same engine as M4 M4 is S55. Stock Power: 424 HPWorld Record HP: 1150WHP (~1350 crank horsepower!! In reality, it was worse than the factory part. Excessive oil consumption is another big one that can alert you to this issue. Ill take it up with the dealership once we are all in better times. You may notice burning oil smells in the cabin. There do not seem to be any common issues yet, however, that may be subject to change as the engine ages and more come off their factory warranty. Over time, the housing and the electronics inside degrade and fail. F11 151k miles (now only tuned by 30%, in the past was tuned onev 40%) Under warranty, some dealers go as far as replacing the entire oil filter housing. e92 168k miles (tune about 30% up) Im guessing something might be coming up in future Im not sure if any other b58 owners have this or if its common In fact, it may not have an equal among all engines on the. Are both available in RWD with manual transmission? So much too learn, so little time. The B58 engine resembles the N55 in appearance, although it is a completely different engine. We were surprised to find this is not uncommon on other BMW engines, too. However, this may not be necessary in most cases. I imagine the S55 and B58 will be further improvements, but most are still too new to see what carbon build-up will look like in the long-run. Agree with you both there Tazzieman/Spjnr. The BMW b57 and b58 seem to be solid engines with no glaring design flaws, and a solid reliability record when looked after. In terms of engine and chassis design, BMW is still one of. You can say we are somewhat N54 fanatics. Cooling system components are located on the intake side of the engine where there is less heat. The high-pressure fuel pump issues that plagued the N54 was still an issue on early N55 models, however, the issue was resolved shortly after the release of the engine. Should I continue looking for a used BMW or All things considered, the N55 was still an improvement over the N54 in terms of reliability. Although, the single turbo will likely limit its capabilities without upgraded turbo(s). However, you may make it well past without issues. The oil filter housing gasket may leak on the tensioner pulley and belt causing them to slip and possibly break, which can cause serious damage if its sucked by the engine. Stay safe everyone! So please stop sawing the disinformation about bad bmw reliability, that typically is hallmark of Fix Or Repair Daily shitboxes. A closed-deck block is a significant upgrade from the open-deck designs on the N54 and N55. The VC is prone to cracking and leaking, too. Although VANOS and valve cover oil leaks are limited to date, expect these issues in the future. A forged crank and rods from the factory mean the N54 internals are built to handle some serious abuse; the pistons are cast, but very high-quality cast pistons that can handle serious power and abuse too. Well, I have N54 running 550whp on td04s. Ram/Jeep had plans to come out with a turbo powered I6 to replace the 5.7 Hemi, but nothing seems to have come from that. The B58 is more reliable than the N55. Proceed with the oil change as normal. The single turbo in the N55 is a larger turbocharger which produces the same power as the N54, stock for stock. The N55 and B58 are similarly designed 3.0 inline-6 single turbo engines. . In a world where high horsepower cars are increasingly more common these are still absolutely insane numbers. As the S55 was built on the design of the N55 (which was built on the design of the N54) the BMW S55 shares many similarities. ?Any accuracy in this? Compared to the two former engines the N55 has been on the road longer, allowing for additional time for tuning developments. Guessing you are all semi-auto owners.. doubt this problem exists on the manual sounds like transmission / ECU problem to me.. #. Only truly good engines bmw made were M20B20 series(2.0, 2.5 , 2.7) and the big sixes M30B35 along with all its smaller or bigger versions. Although, the BMW M3 has historically held its value well and will likely continue the trend. About heat capacity of water / glycol. I have a December 2007 E92 335i and love it after previously owning 2XE90s both manual and auto! Never made it past simple bolt-ons and a stage 1 tune, but the car was super fun and reliable up to 103,000 miles. | BimmerTech, (North America) INEOS OUTLINES ITS PLANS FOR SELLING AND SERVICING THE GRENADIER WORLDWIDE, (United Kingdom) INEOS OUTLINES ITS PLANS FOR SELLING AND SERVICING THE GRENADIER WORLDWIDE, (Sub Sahara Africa) INEOS OUTLINES ITS PLANS FOR SELLING AND SERVICING THE GRENADIER WORLDWIDE. In normal condition like drawing to grocery and not even touching accelerator, you will never see this happening, but when doing hard acceleration because you want to get out of dodge, negotiate out of slip road and you need to rapidly gain 40mph, just having fun Replacing both the valve cover and gasket at an indy shop will likely cost ~$1,000. Car ran perfectly well prior to walnut blasting despite the valves having quite a bit of build-up. Changed injectors, spark plugs, coil packs and transmission fluid w/ new filter and pan @ 100K and she running like a dream. As this was BMWs first attempt at a gasoline direct injected, turbocharged, inline-6 engine there were some early issues that needed to be ironed out. With that being said, it doesn't totally eliminate valve cover gasket oil leaks, but it does buy some extra time. I traded that in for the current 540i with the b58, and tuned its a beast. Dont hesitate to pack those with even more detail ! We may receive a commission for purchases made through these links. Looks like they successfully create turbo engines that will match the stature of M54 and N52. Ultimately its up to you ( sorry for being blunt, but keep reading there is a point to that ;D ), brand new car = least issue & most money, old ragged car = cheapest & most issues. Most repairs at the dealer will easily run over $1,000. Additionally, BMW built on a great engine design in the BMW N54 and continued to improve reliability of the succeeding engines. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. e90 200k miles. Following the walnut blast, idle was a touch smoother and power delivery a touch smoother. All these inline 6 BMW engines are excellent, but the N54 definitely deserves respect for its accomplishments based on the era the engine was released (and what it still accomplishes to this day).