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Audi A4 vs Audi S3 vorsprung tfsi quattro s-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 S3 vorsprung tfsi quattro s-a
90%
MOT pass rate · 1,944 vehicles
More reliable
Verdict: On MOT pass rate, the Audi S3 vorsprung tfsi quattro s-a is the more reliable of the two — 90% pass first time versus 76%. It's one signal among several; check the full breakdown below.

Head to head

Measure Audi A4 Audi S3 vorsprung tfsi quattro s-a
MOT pass rate 76% 90% ✓
MOT failure rate 24% 10% ✓
Faults & advisories per test 1.9 0.6 ✓
Dangerous-fault share 2% ✓ 14%
Average mileage 133,841 mi 24,480 mi
Sample size (vehicles) 568,515 1,944

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 S3 vorsprung tfsi quattro s-a

  1. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  3. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  4. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  5. Rear Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
  6. Nearside Rear Nail in tyre

Reliability FAQ

On MOT pass rate, the Audi S3 vorsprung tfsi quattro s-a is the more reliable of the two — 90% pass first time versus 76%. It's one signal among several; check the full breakdown below.

Full Audi A4 report Full Audi S3 vorsprung tfsi quattro s-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.