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Audi A6 / S6 / RS6 Most Common Problems

48
control arm / tension strut / thrust arm / lateral link
39
CV boot
38
valve cover gasket
27
water pump
25
CV joint / axle / half shaft
21
wheel bearing / hub
20
thermostat
17
motor mount
16
coolant reservoir / expansion tank
16
engine seal / gasket, other or unspecified or unknown (oil leak)
16
fuel pump
15
oxygen sensor
15
radiator hose / engine coolant pipe
15
tie-rod / tie-rod end
15
vacuum lines or hoses
14
end link or bushing for stabilizer bar
14
ignition coil pack
14
strut (suspension)
13
alternator
13
catalytic converter
 
5   10   15   20   25   30   35   40   45   50  
Chart is based on 1019 vehicles in TrueDelta's reliability survey.
These are the problems owners most commonly reported on TrueDelta's Car Reliability Survey. For many models not all entries have been coded yet, so focus on the relative numbers rather than the absolute numbers. Usually when people say "they all have this problem," the problem in question actually affects between 10 percent and 20 percent of all cars. We aren't counting wear items like brake pads and rotors that truly do require periodic replacement on all cars.

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