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Vauxhall Astra vs Vauxhall Insignia: reliability comparison

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

Vauxhall Astra
72%
MOT pass rate · 2,126,137 vehicles
Vauxhall Insignia
78%
MOT pass rate · 296,167 vehicles
More reliable
Verdict: On MOT pass rate, the Vauxhall Insignia is the more reliable of the two — 78% pass first time versus 72%. It's one signal among several; check the full breakdown below.

Head to head

Measure Vauxhall Astra Vauxhall Insignia
MOT pass rate 72% 78% ✓
MOT failure rate 28% 22% ✓
Faults & advisories per test 2.1 1.7 ✓
Dangerous-fault share 2% ✓ 4%
Average mileage 111,290 mi 114,712 mi
Sample size (vehicles) 2,126,137 296,167

Most common faults

Vauxhall Astra

  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. Oil leak, but not excessive (8.4.1 (a) (i))
  4. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  5. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  6. Oil leak

Vauxhall Insignia

  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. Oil leak, but not excessive (8.4.1 (a) (i))
  4. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  5. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  6. Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))

Reliability FAQ

On MOT pass rate, the Vauxhall Insignia is the more reliable of the two — 78% pass first time versus 72%. It's one signal among several; check the full breakdown below.

Full Vauxhall Astra report Full Vauxhall Insignia 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.