IsItAGoodCar
Reliability Guide

Common Problems with the
1998 BMW M5

The E39 M5 is the analogue hero of the line, but age now brings rust, timing-chain guide concerns, and expensive suspension refreshes.

1
Known Issues
1
Serious
0
Moderate
0
Minor

All Known Issues

Timing Chain Guide Wear / VANOS Issues

SeriousEngine

E39-era M5s can suffer from worn chain guides, VANOS solenoid issues, and heavy oil leaks as the S62 ages. Preventative mechanical work is often the difference between a great car and a disaster.

Est. Repair Cost: £1,500–£4,000

Buying Tips for 1998 BMW M5

  • ✓On the E60 V10, demand proof of rod bearing and throttle actuator replacement; without this, engine failure is a matter of when, not if.
  • ✓On the F10 V8, check for extreme oil consumption and coolant leaks from the turbo lines located in the hot 'V' of the engine.
  • ✓Inspect the incredibly expensive brake discs on all models; carbon-ceramics (gold calipers) must be weighed to check for wear.
  • ✓Test the M xDrive system on the F90; ensure it switches seamlessly to 2WD mode and there is no binding from the transfer case.
  • ✓Verify the 1,200-mile running-in service was stamped correctly, and check the overall service history for regular diff and gearbox fluid changes.
  • ✓Check the suspension for knocking or leaking adaptive dampers, as the M5 is an exceptionally heavy car that destroys suspension bushes.
1999–2003
Check a 1998 BMW M5 by Registration