Many modern diesel engines use a timing chain instead of a timing belt. A timing chain is designed to last longer and generally requires less routine maintenance, but it is not maintenance-free. Poor servicing, incorrect oil, or extended oil change intervals can still lead to timing chain wear or failure.
At Bimmer Garage Nottingham, we regularly diagnose and repair timing chain issues on BMW and other European diesel engines.
BMW Diesel Engines with Timing Chains
BMW has used timing chains on most of its modern diesel engines, including:
- M47 – 2.0-litre diesel
- M57 – 3.0-litre six-cylinder diesel
- N47 – 2.0-litre diesel
- N57 – 3.0-litre six-cylinder diesel
- B37 – 1.5-litre diesel
- B47 – 2.0-litre diesel
- B57 – 3.0-litre six-cylinder diesel
While all of these engines use timing chains, their reliability varies depending on the engine generation and maintenance history.
Which BMW Diesel Engines Are Known for Timing Chain Problems?
BMW N47
The N47 is the engine most commonly associated with timing chain problems. Early versions, produced between 2007 and 2015, are particularly well known for premature timing chain wear.
Typical symptoms include:
- Rattling noise from the rear of the engine
- Noise during cold starts
- Engine warning light
- Poor engine performance
Ignoring these symptoms can result in severe engine damage if the chain fails.
BMW B47
The B47 replaced the N47 and features a redesigned timing chain system with improved durability.
Although timing chain failures are much less common than on the N47, regular servicing with the correct engine oil remains essential.
BMW M47, M57, N57 and B57
These engines also use timing chains but generally have a stronger reputation for reliability.
Like any mechanical component, timing chains can wear over very high mileages, especially if oil changes have been neglected.
Other Manufacturers Using Timing Chains
Many other diesel engines also use timing chains, including selected models from:
- Mercedes-Benz (OM651, OM654 and others)
- Nissan
- Mazda Skyactiv-D
- Some Toyota diesel engines
- Certain Jaguar Land Rover Ingenium diesel engines
However, not every diesel engine uses a timing chain. Many manufacturers, including Volkswagen, Audi, Peugeot, Citroën, Ford, Renault and Vauxhall, continue to use timing belts on a number of diesel models. Always check the specific engine rather than assuming based on the brand.
How to Extend Timing Chain Life
The best way to protect a timing chain is through regular maintenance:
- Change the engine oil at the correct intervals
- Always use the manufacturer-approved engine oil
- Investigate rattling noises immediately
- Avoid delaying scheduled servicing
- Have the engine inspected if the warning light appears
Early diagnosis can prevent a costly timing chain replacement or major engine damage.
BMW Timing Chain Specialists in Nottingham
At Bimmer Garage Nottingham, we specialise in diagnosing and repairing BMW diesel timing chain problems.
Whether you drive an M47, M57, N47, N57, B47 or B57-powered BMW, our experienced technicians can inspect your timing chain system and recommend the most appropriate repair before minor wear develops into a major engine failure.
Contact Bimmer Garage Nottingham today to book a professional timing chain inspection and keep your BMW diesel running smoothly.
