2003 BMW 6 Series (E63/E64)
Browse our directory of 2003 BMW 6 Series (E63/E64) vehicles. Access instant MOT history reports, tax status, and reliability insights for any registration listed below.
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Common Problems & Reliability
The 2003 BMW 6 Series (E63/E64) has 3 known issues. 2 of these are classified as serious faults that could be expensive to repair. 1 are moderate concerns worth inspecting before purchase.
V8 Coolant Pipe Leak (N62)
SeriousA coolant pipe running through the center of the V8 engine block leaks. The official fix is engine-out, but expanding "stent" pipes exist.
Est. repair cost: £800–£3,000
Valve Stem Seal Leak (N62)
SeriousThe V8 engines burn massive amounts of oil and blow blue smoke when pulling away after idling. Seals harden and fail.
Est. repair cost: £1,500–£3,000
Alternator Bracket Oil Leak
ModerateA rubber figure-8 seal behind the alternator bracket leaks oil profusely on the V8 models.
Est. repair cost: £500–£1,000
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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