BMW 6 Series (E63/E64) Common Problems & Reliability
The E63/E64 6 Series is a striking grand tourer based heavily on the E60 5 Series platform, returning the '6' badge to the BMW lineup with controversial Bangle-era styling. Positioned as a luxurious coupe or convertible for affluent buyers, it suffers from massive depreciation, making it cheap to buy but incredibly expensive to run in the UK. It shares the E60's complex electronics and notorious engine issues, particularly the valve-stem seals on the V8 models. It suits brave enthusiasts who want a fast, heavy luxury cruiser and have extremely deep pockets for specialist maintenance.
Select a Model Year Period
Detailed fault breakdown, symptoms, and estimated repair bills by production year.
Most Common BMW 6 Series (E63/E64) Faults & Repair Costs
V8 Coolant Pipe Leak (N62)
A coolant pipe running through the center of the V8 engine block leaks. The official fix is engine-out, but expanding "stent" pipes exist.
Valve Stem Seal Leak (N62)
The V8 engines burn massive amounts of oil and blow blue smoke when pulling away after idling. Seals harden and fail.
Convertible Roof Sensor Failure
On the E64 convertible, the complex array of microswitches in the roof mechanism often fail, preventing operation.
Alternator Bracket Oil Leak
A rubber figure-8 seal behind the alternator bracket leaks oil profusely on the V8 models.
Buying a used BMW 6 Series (E63/E64)? Always check for hidden finance and write-off history.
Mechanical problems are only half the battle. Over 1 in 3 UK used cars checked have unpaid finance or accident write-off records that could cause you to lose the car or thousands in value.