Is the N47D20C engine reliable?
Timing Chain Failure: The N47D20C engine has been plagued by timing chain issues. Premature wear and stretching of the timing chain can occur, leading to engine misfires, rattling noises, and even engine failure. This problem often necessitates the replacement of the timing chain and associated components. The N47 engine, used in BMWs from 2007 to 2014, is notorious for timing chain failures due to premature wear, often necessitating a complete engine breakdown as the chain is located at the rear of the engine.BMW has built a reputation for performance and engineering excellence, but certain models, including the BMW X1 (2013–2015), BMW X3 (2013–2017), and BMW 3 Series (2012–2015), have been known to experience timing chain issues—especially in vehicles equipped with the N20 engine.The N47 engine design requires the engine to be removed from the vehicle to safely access the timing chain. Here’s why: Limited Access: The timing chain is located deep inside the engine block, behind the crankshaft and camshaft.The N47 had the timing chain placed at the rear of the engine as BMW felt that access to it would not be needed for the life of the vehicle. BMW usually consider lifetime to mean 100,000 miles. Replacement of the timing chain on the 1 series, 3 series and 5 series engines normally require removal of the engine.
What are common N47 engine problems?
If you drive a BMW with the N47 engine and hear a metallic rattle on cold starts or when idling, your timing chain might be on its way out. This engine is known for early timing chain wear, particularly on models between 2007 and 2015, and waiting too long can lead to catastrophic engine failure. Rough Idling: Does your BMW shake more than usual when starting up? This could be a sign of a worn timing chain struggling to maintain proper engine timing. Unusual Noises: A loud rattling sound, particularly from idle on a cold engine could indicate a loose timing chain catching on other nearby components.
What is the lifetime of the timing chain on a BMW N47?
There is no service schedule for replacing the timing chain, it’s ‘Lifetime’ however is on average around 100,000 miles but that will be heavily dependant on how the car has been maintained from new, we have seen instances of snapped timing chains from 50,000 miles so it is something we strongly recommend you plan to . Most modern timing chains are designed to last the life of the engine. In many cases, they can go over 150,000 to 200,000 miles without issue, especially if the engine has been properly maintained.N47 Reliability: Timing Chain Failures: The most significant issue with the N47 is the timing chain. Many owners have reported premature timing chain failures, which can lead to catastrophic engine damage if not addressed in time. This issue is especially common in engines with higher mileage (over 100,000 miles).
What year did BMW stop using N47?
In 2014, BMW replaced the N47 engine with the B47 which uses same chain design but left the poor reputation of the N47 behind. The BMW N47s engine is an upgraded version of the well-known N47 diesel engine, fitted in popular BMW models like the 320d, 520d, and X1. While offering excellent performance and fuel efficiency, it suffers from similar reliability issues as the standard N47 — particularly the infamous timing chain problem.The N47 had the timing chain placed at the rear of the engine as BMW felt that access to it would not be needed for the life of the vehicle. BMW usually consider lifetime to mean 100,000 miles. Replacement of the timing chain on the 1 series, 3 series and 5 series engines normally require removal of the engine.The BMW 320d 2. Diesel engine variants, particularly the N47D20A and N47D20C, are notorious for timing chain failures. These engines, which are found in several BMW models, including the 3 Series and 5 Series, have a reputation for premature timing chain failure due to faulty crankshaft sprockets.The N47D20C might suffer a little chain noise but the chain won’t snap! The problem cars were the N47D20A engines from 2007 to the start of 2009, they were the ones most likely to snap. I’d save your money. If you were really concerned, take out a BMW Insured Warranty in case the worst happens.
Which N47 had timing chain issues?
Timing chain problems The most seriously affected units which require the most extensive repairs were produced from 1 March 2007 to 5 January 2009. However, there have been reports of timing chain failure in BMW diesel engines manufactured until 2015. The symptoms of a failing timing chain include engine misfires, unusual noises from the engine, a check engine light, oil leaks, and poor engine performance. Ignoring these signs can lead to severe engine damage, so prompt inspection is essential.BMW TIMING CHAIN FAILURE A range of BMW diesel engines produced between 2006 and 2015 appear to have a design problem affecting the timing chain. The timing chain is located at the rear of the engine bay and is not intended to be a serviceable part. It is very weak – it stretches over time, and ultimately snaps.Merits of your BMW timing chain upkeep Boosts engine lifespan: With a properly functioning timing chain, your BMW engine lives longer. Routine upkeep and prompt replacement of a worn-out timing chain keep the engine away from sudden breakdowns during a trip.
Which BMW engine lasts the longest?
Models equipped with inline-six engines like the M54, N52, or B58—and diesel workhorses like the M57 or B57—frequently reach 300,000 miles or more. From million-mile E30s tested under lab conditions to 500,000+ mile M5s driven daily, the high-mileage BMW isn’t a myth—it’s a well-documented reality. The BMW B47 is a 1,995cc inline-4 turbocharged diesel engine first introduced in 2014. It belongs to BMW’s modular engine family (alongside the B38, B48, and B57) and was designed to replace the ageing N47.The BMW N47 engine is a 2. It produces between 143 to 204 horsepower and offers a torque range of 290 to 400 Nm.Models equipped with inline-six engines like the M54, N52, or B58—and diesel workhorses like the M57 or B57—frequently reach 300,000 miles or more. From million-mile E30s tested under lab conditions to 500,000+ mile M5s driven daily, the high-mileage BMW isn’t a myth—it’s a well-documented reality.