Aston Martin DB9 MOT pass rate: 91.4% (4,174 tests, 2025)

The Aston Martin DB9 passed 91.4% of its 4,174 MOT tests in 2025 — 13.9 points above the UK average of 77.5%. The median tested example was 18 years old with 38,094 miles on the clock.

91.4%Pass rate (2025)

4,174MOT tests analysed

38,094 miMedian mileage at test

18 yrsMedian age at test

How the DB9 compares

Aston Martin DB9

91.4%

UK average (all Class 4 vehicles)

77.5% across 33.1 million tests

Aston Martin average (all models)

93.3%

What fails most on the Aston Martin DB9

Across failed and rectified tests in 2025, these vehicle systems produced the most defects on the DB9:

#	System	Defects recorded	Share
1	Lamps, reflectors and electrical equipment	238	35.4%
2	Brakes	130	19.3%
3	Noise, emissions and leaks	92	13.7%
4	Visibility	81	12.0%
5	Suspension	69	10.3%
6	Tyres	63	9.4%

Pre-MOT checklist for DB9 owners

Based on the failure profile above, ten minutes with a torch before your test removes the most likely fail items:

Walk round with all lights on: one blown bulb is the most avoidable fail there is
Feel for a spongy pedal or pulling to one side; check pad wear through the wheel spokes if visible
A blowing exhaust or visible smoke will fail; warm the engine fully before the test
Replace smeared wiper blades and top up washer fluid — both are test items
Bounce each corner and listen for clonks over speed bumps — suspension is this model’s (and the UK’s) top failure system

Check the engine before the tester does

A stored fault code with the engine light on is an automatic Major defect. Scan and clear resolved faults before booking.

Topdon OBD2 scannersTopdon diagnostic scanners with full-system readouts
XTOOL diagnostic toolsXTOOL code readers for petrol and diesel cars
Autel UK testersAutel professional-grade diagnostic testers

DB9 pass rate by registration year

Registration year	Tests	Pass rate	Vs same-age	Median mileage
2005	3,025	90.8%	+26.3 pts	44,452
2006	1,720	89.7%	+25.2 pts	40,900
2007	1,881	90.8%	+25.7 pts	38,507

Check a specific DB9 before you buy

Pass rates describe the model; they can’t tell you about the one car you’re looking at. Run its plate through our free MOT history check to see its personal record of failures, advisories and mileage readings.

Other Aston Martin models

Vantage94.8% pass rate · 4,666 tests V8 Vantage93.0% pass rate · 3,116 tests DB1195.7% pass rate · 2,589 tests DB787.3% pass rate · 1,812 tests Dbs95.0% pass rate · 1,610 tests Vanquish94.7% pass rate · 1,598 tests

FAQs

What is the MOT pass rate for a Aston Martin DB9?

In 2025, 91.4% of 4,174 first MOT tests on the Aston Martin DB9 were passes (UK average: 77.5%). Data: DVSA anonymised MOT results.

What does the DB9 fail its MOT on most?

The biggest defect group is lamps, reflectors and electrical equipment (35.4% of its recorded defects), followed by brakes.

Is the Aston Martin DB9 reliable?

MOT pass rate is one lens on durability: at 91.4% it performs above the national average at a median age of 18 years and 38,094 miles. Always check the individual car's history too.

Source: DVSA Anonymised MOT tests and results, 2025 extract (Class 4 initial tests only; retests excluded). Contains public sector information licensed under the Open Government Licence v3.0. Figures rounded to one decimal place.