As discussed throughout this article the BMW N20 is an overall reliable engine that does not have many common issues. The timing chain and components may be problematic on models prior to 2015, but has since been resolved with an updated design.
Which BMW engines have timing chain issues?
BMW timing chains have snapped on a range of models across the 1, 3 & 5 Series, most commonly affecting the N47 diesel. We also rebuild M57 & N57 diesel engines, BMW petrol engines & also BMW Minis. The timing chain is located at the rear of the engine bay and is not intended to be a serviceable part.
Is the N26 engine reliable?
The N26 injectors are “sorted” and may show to be more reliable than N20 or N55 injectors in the long run. Otherwise, the N20 and N26 produce the same peak power and torque from the factory. They share over 95% of the same parts. Both the N20 and N26 are excellent, sporty, and efficient BMW engines.
How reliable is the BMW B48 engine?
Yes, we believe the BMW B48 is a pretty reliable engine. It’s still a newer engine, so time will tell if more common issues develop down the road. BMW reliability seems to be trending in the right direction, though. At least when you compare the B48 and B58 reliability to that of the earlier N54, N55, N63, S65, etc.
How long will N47 engine last?
200,000 miles N47 engines have no other design issues and can easily run 200,000 miles if maintained correctly plus it is your original engine with traceable service history and mileage.
When should I replace my N20 timing chain?
On the BMW N20 engine, timing should be replaced every 100,000 kilometers. The automaker indicates this period, because the oil temperature is high and the plastic guides deteriorate quickly. To prevent engine damage, the BMW N20 timing chain should be replaced when mileage has not reached 100,000 kilometers.
Which BMW engine is the most reliable?
- BMW B58 Engine.
- BMW M20 Engine.
- BMW M50 Engine.
- BMW S62 Engine.
- BMW N52 Engine.
- BMW M54 Engine.
How long should a BMW timing chain last?
BMW use timing chains in almost every model of engine that they produce. It is recommended to replace your timing chain before failure as repair prices can become very high from internal engine damage if left. The average life of these timing chains is 90,000 miles or 9 years.
How much does it cost to replace a BMW timing chain?
Cost at the Mechanic: $1,624 to $1,879 This is a pretty intensive maintenance/repair task that can take a mechanic several hours to complete. Your BMW timing chain should be replaced every 100,000 miles to keep your car healthy.
How do I know if I have an N20 or N26 engine?
If you have an N20 engine, it will say ULEV. If it is an N26 engine, it will say SULEV. Downpipe: The N20 exhaust system uses standard slip fit joint and clamps to connect.
What is the difference between BMW N20 and N26 engine?
The N26 engine uses higher density (read: more restrictive) CATs, which robs power from the engine at high rpm. The N26 CATs have 900/600 cells/sqin, while the N20 CATs have 600/400 cells/sqin. This difference also affects the power gains with DINANTRONICS™.
What cars have N26 engines?
2012-2016 F30 328i / 328iX (USA only) 2012-2016 F22 228i / 228iX (USA only) 2014-2016 BMW 4 Series F32/F35/F36 428i SULEV (USA models)
How much HP can B48 handle?
The B48 is already proven as underrated from the factory making 220+whp and 240+wtq stock. Tune only cars are able to push over 260 wheel horsepower and 290 wheel torque. Throw a few bolt-ons and some E85 in the mix and you’ve got an engine capable of pushing upwards of 300whp.
Who makes the B48 engine?
The B48 is part of a modular BMW engine family of 3-cylinder (B38/ B37), 4-cylinder (B48/ B47) and 6-cylinder (B58) engines, which use a displacement of 500 cc (30.5 cu in) per cylinder.
Which is better N20 or B48?
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. B48 feels more refined, but when I put the pedal to the metal, it took a little longer for turbo to spool up and the car to actually go compared to my N20.
Why do N47 timing chains fail?
The N47 timing chain premature failure comes from the weak tensioners fail to apply proper tense onto the chains. Over time, the chains are getting slacked and getting loose. The loosen chain will cause the sharp rattling sound. Normally the rattling noise is coming from the rear part of the engine.
When did BMW fix the N47 engine?
BMW N47 is a four-cylinder common rail diesel engine that has many improvements over its predecessor, the M47. In 2014 it was replaced with the B47.
Is BMW N47 engine reliable?
N47C (03/07) engines are safe as they have rectified the parts which break and lead to timing chain failure. All the 5 series 320D suffer from timing chain issues, as they never had N47C. So if you wish to go for 320D, then make sure it has N47C.
What are the symptoms of a failing timing chain?
- Rattling Sound on Starting the Engine or Idling. A common finding in a vehicle with a bad timing chain is unusual rattling noise when the engine is started or when brakes are engaged.
- Misfiring Engine.
- Contaminated Engine Oil.
- Check Engine Light.
- Inability to Start the Engine.
How do I know if my timing chain is bad on my BMW?
- Rough idling: Start up your car and set out of it.
- Unusual noises: Especially when idling, but not just when idling, you may hear your engine rattle.
- Metal shavings in oil: The timing chain will wear out over time.
How do I inspect my N20 timing chain?
How long should a BMW engine last?
Almost any BMW has the potential to run for up to 200,000 or even 250,000 miles with proper maintenance–and there are always going to be outliers that go further.
What year BMW is most reliable?
- BMW 318i. Prior to 2002, the BMW 318i was also known as the E46.
- BMW 325i. Instamotor.com rates the 2005 BMW 325i as one of the best BMW’s ever made.
- BMW E90 328.
- BMW F40.
- BMW 528i.
- BMW i3.
- BMW X3.
- BMW 750i.
Are BMW reliable after 100k miles?
Keeping your BMW running for more than 100k miles is possible. However, this is dependent on a variety of factors. For example, if you do not change the oil in your car on a regular basis or do not properly maintain your engine, it is likely that your car will require major repairs after 100k miles.
Will a broken timing chain destroy my engine?
A broken timing chain will cause an engine to not start or fail while driving. If the belt is already broken, the engine won’t have enough compression to start. If it breaks or jumps while driving, the pistons will be damaged from contact with the valves. The valves themselves will bend and potentially ruin the engine.