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Audi A6 vs Audi Sq7 v8 tdi: 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 Sq7 v8 tdi
100%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Audi A6 (78%) and Audi Sq7 v8 tdi (100%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Audi A6 Audi Sq7 v8 tdi
MOT pass rate 78% 100% ✓
MOT failure rate 22% 0% ✓
Faults & advisories per test 1.7 1.0 ✓
Dangerous-fault share 2% 0% ✓
Average mileage 136,441 mi 91,136 mi
Sample size (vehicles) 246,602 1

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 Sq7 v8 tdi

  1. Nearside Front Brake disc worn, but not excessively (1.1.14 (a) (i))
  2. Nearside Rear Brake disc worn, but not excessively (1.1.14 (a) (i))
  3. Offside Front Brake disc worn, but not excessively (1.1.14 (a) (i))
  4. Offside Rear Brake disc worn, but not excessively (1.1.14 (a) (i))
  5. Offside Front Lower Suspension arm pin or bush worn but not resulting in excessive movement Bendy arm rear bush worn (5.3.4 (a) (i))
  6. Tyre slightly damaged/cracking or perishing Both rear (5.2.3 (d) (ii))

Reliability FAQ

On MOT pass rate the Audi A6 (78%) and Audi Sq7 v8 tdi (100%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Audi A6 report Full Audi Sq7 v8 tdi 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.