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Aston martin Db11 vs Aston martin Db9: reliability comparison

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

Aston martin Db11
95%
MOT pass rate · 2,800 vehicles
More reliable
Aston martin Db9
89%
MOT pass rate · 5,584 vehicles
Verdict: On MOT pass rate, the Aston martin Db11 is the more reliable of the two — 95% pass first time versus 89%. It's one signal among several; check the full breakdown below.

Head to head

Measure Aston martin Db11 Aston martin Db9
MOT pass rate 95% ✓ 89%
MOT failure rate 5% ✓ 11%
Faults & advisories per test 0.5 ✓ 0.7
Dangerous-fault share 2% 1% ✓
Average mileage 20,813 mi 42,014 mi
Sample size (vehicles) 2,800 5,584

Most common faults

Aston martin Db11

  1. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  3. Offside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  4. Nearside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  5. COVID-19 6 MONTH EXTENSION
  6. Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))

Aston martin Db9

  1. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  2. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  3. Under-trays fitted obscuring some underside components
  4. Rear Brake pad(s) wearing thin (3.5.1g)
  5. Offside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  6. Nearside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))

Reliability FAQ

On MOT pass rate, the Aston martin Db11 is the more reliable of the two — 95% pass first time versus 89%. It's one signal among several; check the full breakdown below.

Full Aston martin Db11 report Full Aston martin Db9 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.