Is the timing chain on my BMW 228i going to fail?

Short answer: Early N20 engines in the 228i (built before about early 2015) are known for timing chain guides that break. Listen for a whine or rattle, especially on cold starts, and have a shop check the chain if you hear it. Owners heard $2,000-$5,000 for the job. Also check your VIN for recall 24V608000, which covers the water pump connector.

Symptom: A whine or rattle from the engine (worst on cold starts), a timing-related check engine light, or a shop warning that the chain guide is worn.

What to check first

1. Listen for a whine or rattle at cold start and idle.
2. Ask your build date. Owners said guides were revised around late 2014 to March 2015.
3. Have a shop inspect the chain and guides through the oil filler or with a scan for timing codes.
4. Change the oil on time with BMW-approved oil.
5. Run your VIN at nhtsa.gov/recalls for 24V608000.

Likely causes

1. Worn or broken timing chain guide (early N20 engines). The timing chain links the crankshaft to the camshafts. Plastic guides keep it in place. Owners said early N20 guides can break, and the parts were revised around late 2014 to early 2015.
2. Stretched timing chain. A shop can measure chain stretch. One owner's 2014 chain was out of spec at purchase.

What it usually costs

Owners estimated about $2,000 to $5,000 for the chain and guide job.

Is it safe to keep driving?

If there's no noise or codes, yes. If you hear a rattle or whine, get it checked soon. If a guide breaks and the chain jumps, the engine can be badly damaged.

DIY or shop?

Chain and guide replacement is an advanced job that needs special timing tools. Most owners use a shop.

Recalls, bulletins and complaints in plain words

• Recalls: NHTSA lists recall 24V608000 for certain 2014-2016 228i and 228xi (and other N20 BMWs): an improperly sealed electrical connector on the water pump can let in water and short circuit, which increases the risk of a fire. Dealers inspect and replace the water pump and connector as needed and add a protective shield. If your car is part of this recall, the dealer fixes it for free. Check your VIN at nhtsa.gov/recalls.
• Plain words: The complaint count below shows how often owners reported problems that mention these words to NHTSA. A count is not proof of a defect.
• NHTSA complaints: 15 keyword-matched complaints for BMW 228i/M235i 2014–2016 (of 42 unique complaints queried, NHTSA complaints API by model year, queried 2026-11-04; keywords: timing, chain, coolant, leak, water pump, engine, overheat). This counts complaints that mention these words. It is not a defect finding.

What owners report

• In Furious: 2016 228i timing chain issue and coolant leak on Reddit r/BMW, a 2016 228i at 33,350 miles went in for a thermostat and the shop found a broken upper timing chain guide plus a leaking coolant connection at the turbo. A reply said the guides were revised at the end of 2014, so most 2015 and all 2016 cars have the new part.
• In Considering 2014 BMW 228i - Time Bomb? on Reddit r/BMW, a buyer of a 2014 228i asked if it was a time bomb. One reply estimated about $2k to replace the chain and guides, and another said the repair is about $5,000. The owner bought it, a warranty-approved mechanic confirmed the chain was out of spec, and the whole job (chain, guide, tensioner and oil pump chain) was done.
• In n20 timing chain issues on Reddit r/BMW, a shopper heard N20 chains built before March 2015 are prone to failure. Owners said there's no preventive maintenance, the only fix is replacing the chain and guides, and one filtered his search to 2016 and newer. A 328i owner with the same engine replaced his.

Quick tip

Check the build date and listen for noise when buying. On an early car, budget for the chain job or proof it was done.

Vehicle focus: BMW 228i/228xi (N20 engine), 2014-2016.

Safety / mechanic note

A failed timing chain can stop the engine while driving. Verify with a mechanic.