Using the same platform as the contemporary E60 5 Series means the E63 6 Series was off to a good start on the ride and handling front. It also means the car is reliable as a used buy when it comes to the suspension, brakes, wheels and tyres. However, don't expect small bills should something need to be replaced and a full set of original BMW brakes discs and pads will cost more than £1,000.
Aftermarket options are available from £600 for a complete set, though some owners report warping with non-OEM equipment. Don't trust the brake wear indicator not being illuminated on a car when buying as this is easily reset and a less scrupulous seller can do this to hide a looming bill.
Run-flat tyres give a harsher ride and most have been replaced with conventional premium tyres that improve the ride and refinement.
A recall in 2006 for failed rear damper mounts was followed by another in 2008 for the rear axle carrier failing. Make sure this work has been done. Also, the knuckle joints on the back end need replacing every 50,000 miles or so.
Fortunately, the E63 seems less prone to broken suspension springs than its 5 Series sibling, but changing the dampers for new Bilsteins from BMW will empty your wallet to the tune of £700. New suspension bushes will transform the ride and handling of any 6 Series with higher miles, while new front suspension arms are not prohibitively expensive at £140 each.
The hydraulic power steering system is reliable, but listen out for any noises from the pump when the front wheels are on full lock. This can be cured with new PAS fluid, but if it persists a new pump will be needed.
"The driving experience was perfect for me, really my type of car: happy to mooch around town but enjoyable with Sport mode engaged, DSC switched off and some eager footwork."
Jonathan del Monte