There's a lot to consider when weighing up a used C6 RS6, as the previous few pages probably made clear. It's a big, complex car, one that requires a healthy budget to keep in tip-top condition. If you can maintain one, then an RS6 should be a fast family estate par excellence. Keep this tick list handy when looking at a car for sale, and good luck!
Sub-20mpg is common, even with moderate use.
Oil pump seal fails due to under-bonnet heat and this 50p part requires £1,500 of work to replace it.
Oil temperature sensor can fail and is tricky to replace.
Coolant pipes hidden in driver's wheelarch corrode, but specialists can fix this for £700.
Change gearbox fluid every 20,000 miles.
Engine remaps are common and take power to 700hp easily and reliably.
Rolling chassis
Steering offers little feel, but an uprated anti-roll bar reduces understeer.
Joints in the rubber suspension hoses can corrode and leak.
Brakes wear quickly and are expensive to replace. Aftermarket replacements are cheaper and can provide better stopping power.
A set of tyres will come in at just less than £1,000.
Aluminium bonnet can suffer stone chips.
Look for scratches on the Avant's rear load sill.
Make sure all panel gaps are tight and even.
Interior
Wear to the driver's seat outer bolster may appear on higher mileage cars.
Sat-nav and phone connection are outdated but still work with most smartphones and MP3 players.