BMW 6 Series (E63/E64) Problems by Year
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 year below to see the specific problems affecting that model year, with estimated repair costs and severity ratings.
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View MOT history, registration data, and reliability scores for the BMW 6 Series (E63/E64).
View 6 Series (E63/E64) DirectoryBuying Tips for the BMW 6 Series (E63/E64)
- ✓On the 645Ci and 650i V8s, idle the car when warm for 5 minutes then blip the throttle; a puff of blue smoke means the valve stem seals are failing (a £2,000+ repair).
- ✓Check the complex folding roof mechanism on the E64 convertible; ensure it opens fully without hesitation and that the rear window drops correctly.
- ✓Listen for a 'ticking' noise from the V8 engines, which can indicate worn timing chain guides, another catastrophic failure point.
- ✓Test the early iDrive system (CCC); random reboots or a frozen screen require a costly head unit rebuild.
- ✓Inspect the gearbox for harsh shifting or a 'transmission fault' warning; the mechatronic sealing sleeve frequently leaks fluid.
- ✓Verify the Dynamic Drive active anti-roll bars (if fitted) aren't leaking hydraulic fluid, as replacement valve blocks are very expensive.