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Audi A3 vs Audi Sq5 tdi: reliability comparison

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

Audi A3
78%
MOT pass rate · 586,036 vehicles
Audi Sq5 tdi
85%
MOT pass rate · 2 vehicles
Verdict: On MOT pass rate the Audi A3 (78%) and Audi Sq5 tdi (85%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Audi A3 Audi Sq5 tdi
MOT pass rate 78% 85% ✓
MOT failure rate 22% 15% ✓
Faults & advisories per test 1.8 1.8
Dangerous-fault share 3% 3%
Average mileage 112,882 mi 90,846 mi
Sample size (vehicles) 586,036 2

Most common faults

Audi A3

  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. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  4. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  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 Sq5 tdi

  1. Nearside Rear Child Seat fitted not allowing full inspection of adult belt
  2. Front Brake disc worn, but not excessively Both sides fronts lipped on the edges. (1.1.14 (a) (i))
  3. Offside Front Tyre has a cut but not deep enough to reach the ply or cords (5.2.3 (d) (i))
  4. Offside Front Position lamp not working (4.2.1 (a) (ii))
  5. Offside Front Lower Coil spring fractured or broken Broken at the base. (5.3.1 (b) (i))
  6. Central Lower Exhaust mounting defective Both centre section exhaust clamps corroded. (6.1.2 (a))

Reliability FAQ

On MOT pass rate the Audi A3 (78%) and Audi Sq5 tdi (85%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Audi A3 report Full Audi Sq5 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.