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Audi A6 vs Audi Tdi estate: 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 Tdi estate
60%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Audi A6 (78%) and Audi Tdi estate (60%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Audi A6 Audi Tdi estate
MOT pass rate 78% ✓ 60%
MOT failure rate 22% ✓ 40%
Faults & advisories per test 1.7 ✓ 3.2
Dangerous-fault share 2% 0% ✓
Average mileage 136,441 mi 206,706 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 Tdi estate

  1. air bag light on
  2. Nearside Front Lower Suspension arm has slight play in a ball joint (2.4.G.2)
  3. Rear registration plate delaminated but not likely to be misread (6.3.1d)
  4. airbag warning light displayed on dash
  5. brake pad warning light displayed on dash
  6. engine oil leak

Reliability FAQ

On MOT pass rate the Audi A6 (78%) and Audi Tdi estate (60%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Audi A6 report Full Audi Tdi estate 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.