V8 Coolant Pipe Leak (N62)
SeriousCooling SystemA coolant pipe running through the center of the V8 engine block leaks. The official fix is engine-out, but expanding "stent" pipes exist.
Estimated cost: £800–£3,000Affects: 2003–2010
Common Problems with the
2003 BMW 6 Series (E63/E64)
We've identified 3 known issues that can affect the 2003 BMW 6 Series (E63/E64). 2 of these are serious faults that could be expensive to repair.
3
Known Issues
2
Serious
1
Moderate
0
Minor
The 2003 period has 1 more issue than the BMW 6 Series (E63/E64) average across all year periods.
All Known Issues
Valve Stem Seal Leak (N62)
SeriousEngineThe V8 engines burn massive amounts of oil and blow blue smoke when pulling away after idling. Seals harden and fail.
Estimated cost: £1,500–£3,000Affects: 2003–2010
Alternator Bracket Oil Leak
ModerateEngineA rubber figure-8 seal behind the alternator bracket leaks oil profusely on the V8 models.
Estimated cost: £500–£1,000Affects: 2003–2010
Buying Tips for the 2003 BMW 6 Series (E63/E64)
- ✓Check V8 (645ci/650i) models for the dreaded coolant pipe leak and valve stem seal smoke
- ✓Test the convertible roof (E64) thoroughly as the sensors often fail
- ✓Verify the iDrive system works without rebooting
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