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Audi A4 technik 35 tfsi mhev vs Audi A6: reliability comparison

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

Audi A4 technik 35 tfsi mhev
89%
MOT pass rate · 296 vehicles
More reliable
Audi A6
78%
MOT pass rate · 246,602 vehicles
Verdict: On MOT pass rate, the Audi A4 technik 35 tfsi mhev is the more reliable of the two — 89% pass first time versus 78%. It's one signal among several; check the full breakdown below.

Head to head

Measure Audi A4 technik 35 tfsi mhev Audi A6
MOT pass rate 89% ✓ 78%
MOT failure rate 11% ✓ 22%
Faults & advisories per test 0.9 ✓ 1.7
Dangerous-fault share 6% 2% ✓
Average mileage 46,252 mi 136,441 mi
Sample size (vehicles) 296 246,602

Most common faults

Audi A4 technik 35 tfsi mhev

  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. Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
  4. Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  5. Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))
  6. Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (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 A4 technik 35 tfsi mhev is the more reliable of the two — 89% pass first time versus 78%. It's one signal among several; check the full breakdown below.

Full Audi A4 technik 35 tfsi mhev 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.