What is the Timing Chain Guide Wear / VANOS Issues problem on a 1998 BMW M5?

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.

Known Issues

Serious

Moderate

Minor

The 1998 period has 1 more issue than the BMW M5 average across all year periods.

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.

Most affected: E39 M5

Estimated cost: £1,500–£4,000Affects: 1998–2003Often appears around: 80k–130k miles

Typical symptoms

•Rattle on start-up
•Top-end noise and oil seepage around the front of the engine

What to inspect before you buy

✓Look for timing-chain or VANOS invoices
✓Inspect the underside for major oil leaks

Buying Tips for the 1998 BMW M5

✓Do not buy an M5 on a tight budget: tyres, brakes, clutches, and suspension parts are all expensive
✓Check that oil services were frequent and specialist-led rather than stretched to dashboard intervals
✓Listen for top-end noise, VANOS rattle, rod-bearing chatter, or turbo heat-related issues
✓Test every electronic comfort feature because weak batteries and module faults cause chaos on older M5s

1999–2003 BMW M5