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Audi A6 / S6 / RS6 Most Common Problems (All Years)

52
control arm / tension strut / thrust arm / lateral link
41
CV boot
41
valve cover gasket
32
water pump
26
CV joint / axle / half shaft
24
wheel bearing / hub
22
thermostat
19
motor mount
18
coolant reservoir / expansion tank
17
fuel pump
17
oxygen sensor
17
radiator hose / engine coolant pipe
17
tie-rod / tie-rod end
16
engine seal / gasket, other or unspecified or unknown (oil leak)
16
ignition coil pack
16
vacuum lines or hoses
14
alternator
14
end link or bushing for stabilizer bar
14
strut (suspension)
13
catalytic converter
 
6   12   18   24   30   36   42   48   54   60  
Chart is based on 1040 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.