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Audi A1 s line black ed 25 tfsi vs Audi A6: reliability comparison

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

Audi A1 s line black ed 25 tfsi
91%
MOT pass rate · 1,487 vehicles
More reliable
Audi A6
78%
MOT pass rate · 246,602 vehicles
Verdict: On MOT pass rate, the Audi A1 s line black ed 25 tfsi is the more reliable of the two — 91% pass first time versus 78%. It's one signal among several; check the full breakdown below.

Head to head

Measure Audi A1 s line black ed 25 tfsi Audi A6
MOT pass rate 91% ✓ 78%
MOT failure rate 9% ✓ 22%
Faults & advisories per test 0.7 ✓ 1.7
Dangerous-fault share 6% 2% ✓
Average mileage 28,288 mi 136,441 mi
Sample size (vehicles) 1,487 246,602

Most common faults

Audi A1 s line black ed 25 tfsi

  1. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  3. Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
  4. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  5. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  6. Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))

Audi A6

  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 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. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  6. Offside Rear Tyre worn close to the legal limit (4.1.E.1)

Reliability FAQ

On MOT pass rate, the Audi A1 s line black ed 25 tfsi is the more reliable of the two — 91% pass first time versus 78%. It's one signal among several; check the full breakdown below.

Full Audi A1 s line black ed 25 tfsi report Full Audi A6 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.