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Audi A4 vs Audi Q4: reliability comparison

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

Audi A4
76%
MOT pass rate · 568,515 vehicles
Audi Q4
100%
MOT pass rate · 8 vehicles
Verdict: On MOT pass rate the Audi A4 (76%) and Audi Q4 (100%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Audi A4 Audi Q4
MOT pass rate 76% 100% ✓
MOT failure rate 24% 0% ✓
Faults & advisories per test 1.9 0.8 ✓
Dangerous-fault share 2% 0% ✓
Average mileage 133,841 mi 46,638 mi
Sample size (vehicles) 568,515 8

Most common faults

Audi A4

  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 Rear Tyre worn close to the legal limit (4.1.E.1)
  4. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  5. Under-trays fitted obscuring some underside components
  6. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Audi Q4

  1. Offside Rear Tyre worn close to legal limit/worn on edge worn inner edge (5.2.3 (e))
  2. Nearside Front Windscreen wiper blade defective (3.4 (b) (i))
  3. Offside Front Windscreen wiper blade defective (3.4 (b) (i))
  4. Nearside Rear Nail in tyre
  5. Nearside Rear Tyre has a cut but not deep enough to reach the ply or cords (5.2.3 (d) (i))
  6. Offside Rear Tyre has a cut but not deep enough to reach the ply or cords (5.2.3 (d) (i))

Reliability FAQ

On MOT pass rate the Audi A4 (76%) and Audi Q4 (100%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Audi A4 report Full Audi Q4 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.