Skip to content

Audi A1 vs Audi A3 sport nav tdi: reliability comparison

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

Audi A1
84%
MOT pass rate · 235,482 vehicles
Audi A3 sport nav tdi
92%
MOT pass rate · 177 vehicles
More reliable
Verdict: On MOT pass rate, the Audi A3 sport nav tdi is the more reliable of the two — 92% pass first time versus 84%. It's one signal among several; check the full breakdown below.

Head to head

Measure Audi A1 Audi A3 sport nav tdi
MOT pass rate 84% 92%
MOT failure rate 16% 8%
Faults & advisories per test 1.5 0.0
Dangerous-fault share 5%
Average mileage 67,791 mi 102,208 mi
Sample size (vehicles) 235,482 177

Most common faults

Audi A1

  1. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  3. Rear Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
  4. Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  5. Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  6. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Audi A3 sport nav tdi

No fault breakdown available.

Reliability FAQ

On MOT pass rate, the Audi A3 sport nav tdi is the more reliable of the two — 92% pass first time versus 84%. It's one signal among several; check the full breakdown below.

Full Audi A1 report Full Audi A3 sport nav tdi 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.