90.1%
Aston Martin DB9 pass rate
Used Aston Martin DB9 buying guide
In 2025, Aston Martin DB9 cars passed 90.1% of 4,209 initial MOT tests, 17.8 points above the 72.3% UK average. Here is where it fails and what to check before you buy.
Looking at a specific DB9? Check its finance, write-off, stolen, mileage and keeper history. £15, no account needed.
Aston Martin DB9 MOT record in brief
Initial MOT tests in 2025, retests excluded.
72.3%
UK average, all cars
+17.8
percentage points above average
Ranked on pass rate the DB9 sits 36th of 575 models in the data. Aston Martin as a brand averaged 92.1%, so this model runs 2 points behind its own brand. Aston Martin DB9 cars aged 6 to 10 years passed 97% of MOT tests in 2025; for examples aged 11 years and over that fell to 89.2%.
A pass rate is not a reliability score. The full Aston Martin DB9 MOT record has the pass rate by age, every common failure and how the DB9 compares with similar cars.
DB9 fuel types
Petrol was the most common fuel among Aston Martin DB9 cars tested in 2025. None of the tested examples were diesel.
Where the DB9 fails its MOT
Where Aston Martin DB9 cars that failed their 2025 MOT were marked down, as a share of all recorded failure items.
The specific items testers recorded most often were malfunction indicator lamp inoperative or indicates a malfunction (8.7%), position lamp not working (8.7%) and wipers does not clear the windscreen effectively (6%). See every common DB9 MOT failure.
These are DVSA failure records across every Aston Martin DB9 that failed, not a claim that every DB9 has these problems.
What should you check when buying a used DB9?
The areas above, most common first, and what an MOT tester looks at in each.
1
Lamps, reflectors and electrical equipment
Walk round with every light on: headlights, brake lights, indicators, fog lights and the number plate lamp. Check no warning lights stay on after starting. 33.2% of DB9 failure items.
2
Brakes
Make sure the pedal feels firm, the car stops in a straight line, the handbrake holds on a slope and no brake warning light is showing. 16.5% of DB9 failure items.
3
Visibility
Check the windscreen for chips or cracks in the driver's view, and that the wipers and washers clear it properly. 12.7% of DB9 failure items.
4
Noise, emissions and leaks
Listen for a blowing exhaust, watch for smoke on start-up and look under the car for oil or fluid leaks. 12.4% of DB9 failure items.
5
Suspension
Listen for knocks over bumps, check the car sits level, and look for leaking shock absorbers and split rubber gaiters. 8.5% of DB9 failure items.
None of this replaces the car's own record. Run a free MOT history check on the registration to see every test, advisory and recorded mileage for that car.
What the MOT record doesn't tell you
Knowing Aston Martin DB9 failures cluster around lamps, reflectors and electrical equipment and brakes tells you what to inspect. It tells you nothing about whether the car is safe to buy. An MOT does not show money still owed on the car, a write-off, a theft record or a clocked odometer.
Check the exact DB9 you are looking at. One £15 report, instant results, backed by a £30,000 data guarantee. More on the Aston Martin history check.
- Outstanding finance
- Write-off records
- Stolen markers
- Mileage history
- Previous keepers
Other used Aston Martin models
The most-tested Aston Martin models in 2025, with how their MOT pass rate compares with the DB9.
Used Aston Martin DB9 FAQs
Is the Aston Martin DB9 reliable?
MOT data does not measure reliability. It records whether a car met the roadworthiness standard on the day of its test. What it does show is a 90.1% first-time pass rate for the Aston Martin DB9 across 4,209 tests in 2025, above the 72.3% average for all cars.
Do older Aston Martin DB9 cars fail their MOT more often?
Aston Martin DB9 cars aged 6 to 10 years passed 97% of MOT tests in 2025; for examples aged 11 years and over that fell to 89.2%. On an older example, the car's own MOT history tells you more than the model average.
What should I check before buying a used Aston Martin DB9?
On the car itself, start with the areas it most often fails on: lamps, reflectors and electrical equipment, brakes and visibility. Then check the individual car's history: outstanding finance, insurance write-off records, stolen markers, mileage and previous keepers. None of these appear in the MOT record or on the V5C.
How do I check an Aston Martin DB9's history?
Enter the registration of the specific car. A Carpeep car history check reports outstanding finance, write-off category, stolen markers, mileage history, previous keepers, MOT and tax status, import and export markers and scrapped status in one £15 report.
MOT figures are aggregated from the DVSA MOT Anonymised data set for 2025 (class 4 initial tests, retests excluded), licensed under the Open Government Licence v3.0. MOT results describe roadworthiness at test, not mechanical reliability.