Skip to content

Audi A1 1.4 tfsi auto vs Audi A4: reliability comparison

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

Audi A1 1.4 tfsi auto
88%
MOT pass rate · 3 vehicles
Audi A4
76%
MOT pass rate · 568,515 vehicles
Verdict: On MOT pass rate the Audi A1 1.4 tfsi auto (88%) and Audi A4 (76%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Audi A1 1.4 tfsi auto Audi A4
MOT pass rate 88% ✓ 76%
MOT failure rate 12% ✓ 24%
Faults & advisories per test 0.6 ✓ 1.9
Dangerous-fault share 0% ✓ 2%
Average mileage 37,038 mi 133,841 mi
Sample size (vehicles) 3 568,515

Most common faults

Audi A1 1.4 tfsi auto

  1. all four sides tyres cracking
  2. Offside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  3. Front Lower Undertray insecure (8.1.1 (b) (i))
  4. Nearside Front Steering rack gaiter missing or no longer prevents the ingress of dirt clip missing (2.1.3 (g) (ii))
  5. Offside Rear Child Seat fitted not allowing full inspection of adult belt

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))

Reliability FAQ

On MOT pass rate the Audi A1 1.4 tfsi auto (88%) and Audi A4 (76%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Audi A1 1.4 tfsi auto report Full Audi A4 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.