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Audi A4 vs Audi Rs 5 carbon black tfsi quat 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 Rs 5 carbon black tfsi quat a
89%
MOT pass rate · 889 vehicles
More reliable
Verdict: On MOT pass rate, the Audi Rs 5 carbon black tfsi quat a is the more reliable of the two — 89% pass first time versus 76%. It's one signal among several; check the full breakdown below.

Head to head

Measure Audi A4 Audi Rs 5 carbon black tfsi quat a
MOT pass rate 76% 89% ✓
MOT failure rate 24% 11% ✓
Faults & advisories per test 1.9 0.8 ✓
Dangerous-fault share 2% ✓ 9%
Average mileage 133,841 mi 32,130 mi
Sample size (vehicles) 568,515 889

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 Rs 5 carbon black tfsi quat a

  1. Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
  2. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  3. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  4. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  5. Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))
  6. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Reliability FAQ

On MOT pass rate, the Audi Rs 5 carbon black tfsi quat a is the more reliable of the two — 89% pass first time versus 76%. It's one signal among several; check the full breakdown below.

Full Audi A4 report Full Audi Rs 5 carbon black tfsi quat 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.