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Audi A1 tfsi s-line vs Audi A6: reliability comparison

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

Audi A1 tfsi s-line
78%
MOT pass rate · 8 vehicles
Audi A6
78%
MOT pass rate · 246,602 vehicles
Verdict: On MOT pass rate the Audi A1 tfsi s-line (78%) and Audi A6 (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Audi A1 tfsi s-line Audi A6
MOT pass rate 78% 78%
MOT failure rate 22% 22%
Faults & advisories per test 1.7 1.7
Dangerous-fault share 8% 2% ✓
Average mileage 54,846 mi 136,441 mi
Sample size (vehicles) 8 246,602

Most common faults

Audi A1 tfsi s-line

  1. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  3. Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  4. Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  5. Offside Rear Nail in tyre
  6. Nearside Front Brake pad(s) wearing thin (1.1.13 (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 tfsi s-line (78%) and Audi A6 (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Audi A1 tfsi s-line 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.