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Audi 80 vs Audi A4: reliability comparison

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

Audi 80
63%
MOT pass rate · 48,570 vehicles
Audi A4
76%
MOT pass rate · 568,515 vehicles
More reliable
Verdict: On MOT pass rate, the Audi A4 is the more reliable of the two — 76% pass first time versus 63%. It's one signal among several; check the full breakdown below.

Head to head

Measure Audi 80 Audi A4
MOT pass rate 63% 76% ✓
MOT failure rate 37% 24% ✓
Faults & advisories per test 2.7 1.9 ✓
Dangerous-fault share 0% ✓ 2%
Average mileage 146,340 mi 133,841 mi
Sample size (vehicles) 48,570 568,515

Most common faults

Audi 80

  1. Parking brake: efficiency below requirements (3.7.B.7)
  2. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  3. Fuel pipe/s corroded
  4. Nearside Rear wheel bearing has slight play (2.6.2)
  5. Offside Rear wheel bearing has slight play (2.6.2)
  6. Offside Front Tyre worn close to the legal limit (4.1.E.1)

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))

Reliability FAQ

On MOT pass rate, the Audi A4 is the more reliable of the two — 76% pass first time versus 63%. It's one signal among several; check the full breakdown below.

Full Audi 80 report Full Audi A4 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.