IsItAGoodCar
Reliability Guide

Common Problems with the
2010 BMW 3 Series (E90/E91/E92/E93)

We've identified 4 known issues that can affect the 2010 BMW 3 Series (E90/E91/E92/E93). 3 of these are serious faults that could be expensive to repair.

4
Known Issues
3
Serious
1
Moderate
0
Minor

All Known Issues

N47 Timing Chain Failure

SeriousEngine

The rear-mounted N47 chain can stretch and snap, taking out the engine. Early units suffered from sharp crankshaft sprocket teeth (Recall 14V054). It is the key risk on mainstream 318d and 320d cars built in the late-2000s.

Est. Repair Cost: £1,200–£3,500
Warning Signs:

Metallic rattle from the gearbox side on cold start, Long cranking or timing faults, Harsh idle or sudden engine cut-out

What to Inspect:
  • Listen with the bonnet open and from inside the cabin
  • Verify if Recall 14V054 (crankshaft/chain) was completed
  • Check service intervals were sensible rather than long-life only
Verified by IsItAGoodCar Research Team

Electric Water Pump Failure

SeriousCooling System

Petrol six-cylinders use an electric water pump that can fail with little warning, pushing the car into limp mode or overheating within minutes.

Est. Repair Cost: £450–£750
Warning Signs:

Cooling fan running flat-out, Temperature warning and limp mode, Poor cabin heat before failure

What to Inspect:
  • Look for pump and thermostat invoices around 60k-90k miles
  • Scan the DME for shadow cooling faults
  • Watch coolant temperature on a longer drive if diagnostics are available
Verified by IsItAGoodCar Research Team

High Pressure Fuel Pump (N54 Engine)

SeriousFuel System

Twin-turbo 335i models suffer HPFP failures that cause long cranks, misfires under load, and limp mode, especially on cars that have been tuned hard.

Est. Repair Cost: £600–£900
Warning Signs:

Extended cranking from hot or cold, Misfire or hesitation under boost, Engine-management light with fuel-pressure faults

What to Inspect:
  • Look for HPFP replacement history and injector work
  • Drive the car hard once warm to check for fuel-pressure collapse
  • Be cautious of mapped cars with no fuel-system receipts
Verified by IsItAGoodCar Research Team

FRM (Footwell Module) Failure

ModerateElectrics & Electronics

Low voltage, jump starts, and age can corrupt the footwell module, leaving the car with lighting and window faults that can cause an MOT failure.

Est. Repair Cost: £250–£500
Warning Signs:

Windows or mirrors stop responding, Indicators or dipped beam stop working, Intermittent warning lights after battery issues

What to Inspect:
  • Check all exterior lights and windows before and after a restart
  • Inspect battery age and IBS history
  • Avoid cars with suspiciously recent FRM coding but unresolved voltage faults
Verified by IsItAGoodCar Research Team

Buying Tips for 2010 BMW 3 Series (E90/E91/E92/E93)

  • ✓Budget for suspension, brake pipe, and water-pump work on cars still wearing old run-flats or original arms
  • ✓If it is a 320d or 318d, demand chain-proof paperwork rather than trusting a quiet engine on the day
  • ✓Check every exterior light, window, and mirror because FRM and wiring faults are common on ageing cars
  • ✓E93 convertibles need a full roof cycle and a dry boot floor before you think about cosmetics or spec
20092011
Check a 2010 BMW 3 Series (E90/E91/E92/E93) by Registration