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Audi 1640 vs Audi A4: reliability comparison

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

Audi 1640
79%
MOT pass rate · 1 vehicles
Audi A4
76%
MOT pass rate · 568,515 vehicles
Verdict: On MOT pass rate the Audi 1640 (79%) 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 1640 Audi A4
MOT pass rate 79% ✓ 76%
MOT failure rate 21% ✓ 24%
Faults & advisories per test 0.7 ✓ 1.9
Dangerous-fault share 10% 2% ✓
Average mileage 515,800 mi 133,841 mi
Sample size (vehicles) 1 568,515

Most common faults

Audi 1640

  1. Under-trays fitted obscuring some underside components
  2. under trays fitted
  3. Offside Headlamp aim too high (4.1.2 (a))
  4. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  5. Nearside Front Tyre tread depth below requirements of 1.6mm 225/50x17 (5.2.3 (e))
  6. Nearside Front Inner Tyre worn close to legal limit/worn on edge (5.2.3 (e))

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 1640 (79%) and Audi A4 (76%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Audi 1640 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.