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Audi A4 vs Audi Rs6 performance tfsi quattro a: reliability comparison

MOT pass rates, common faults and mileage compared from real UK MOT data.

Audi A4
76%
MOT pass rate · 568,515 vehicles
Audi Rs6 performance tfsi quattro a
92%
MOT pass rate · 108 vehicles
Verdict: On MOT pass rate the Audi A4 (76%) and Audi Rs6 performance tfsi quattro a (92%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Audi A4 Audi Rs6 performance tfsi quattro a
MOT pass rate 76% 92% ✓
MOT failure rate 24% 8% ✓
Faults & advisories per test 1.9 0.0 ✓
Dangerous-fault share 2% 0% ✓
Average mileage 133,841 mi 56,792 mi
Sample size (vehicles) 568,515 108

Most common faults

Audi A4

  1. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  2. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  3. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  4. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  5. Under-trays fitted obscuring some underside components
  6. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Audi Rs6 performance tfsi quattro a

  1. Nearside Front Shock absorbers light misting of oil or has limited damping effect (5.3.2 (b))
  2. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  3. Front Registration plate does not conform to the specified requirements (0.1 (d))
  4. Rear Registration plate does not conform to the specified requirements (0.1 (d))
  5. Offside Steering rack gaiter missing or no longer prevents the ingress of dirt (2.1.3 (g) (ii))

Reliability FAQ

On MOT pass rate the Audi A4 (76%) and Audi Rs6 performance tfsi quattro a (92%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Audi A4 report Full Audi Rs6 performance tfsi quattro a report Most reliable cars

Pass rates are computed over completed (pass/fail) MOT tests. Reliability also depends on age, mileage and upkeep — see each model's page for the full picture.