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Audi A6 vs Audi A7 s line 40 tdi mhev s-a: reliability comparison

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

Audi A6
78%
MOT pass rate · 246,602 vehicles
Audi A7 s line 40 tdi mhev s-a
89%
MOT pass rate · 72 vehicles
Verdict: On MOT pass rate the Audi A6 (78%) and Audi A7 s line 40 tdi mhev s-a (89%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Audi A6 Audi A7 s line 40 tdi mhev s-a
MOT pass rate 78% 89% ✓
MOT failure rate 22% 11% ✓
Faults & advisories per test 1.7 0.9 ✓
Dangerous-fault share 2% ✓ 7%
Average mileage 136,441 mi 48,088 mi
Sample size (vehicles) 246,602 72

Most common faults

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)

Audi A7 s line 40 tdi mhev s-a

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

Reliability FAQ

On MOT pass rate the Audi A6 (78%) and Audi A7 s line 40 tdi mhev s-a (89%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Audi A6 report Full Audi A7 s line 40 tdi mhev 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.