Common problems

Aston Martin DB9 common problems

What MOT testers find on the Aston Martin DB9: the parts that fail or get advisories most often at each age, against all cars of the same age. From 12,073 DVSA MOT tests taken 2022 to 2025.

MOT data updated 28 September 2026

At 17 years, the most tested age

Lights and electrics fails per 100 MOTs (n=2,773)4.7

All cars at 17 years (n=4,040,458)21.0

Tyres advisories and minor defects per 100 MOTs (n=2,773)12.6

All cars, same age (n=4,040,458)28.1

What stands out

No part area of the Aston Martin DB9 fails more than 1 point per 100 MOTs above all cars at 17 years old (n=2,773; all cars n=4,040,458).
Lights and electrics fails are less common: 4.7 per 100 MOTs against 21.0 for all cars at the same age.
The fail item testers record most often at 17 years: side/position light not working, on 1.6 per 100 MOTs (all cars 5.8).
The most common advisory or minor defect: tread depth: worn close to legal limit/worn on edge, on 6.5 per 100 MOTs.

Problems by part at 17 years

How many of every 100 MOTs found a fail, or an advisory or minor defect, in each area. A test with faults in two areas counts in both.

Aston Martin DB9 at 17 years (n=2,773) against all cars at 17 years (n=4,040,458). Per 100 MOTs.
Area	Fails	All cars	Advisories	All cars
Lights and electrics	4.7	21.0	3.2	16.9
Windscreen, wipers and mirrors	2.3	7.1	2.3	6.0
Brakes	1.9	12.3	11.6	31.1
Exhaust, emissions and leaks	1.7	6.5	1.1	13.2
Suspension	1.7	17.2	4.1	34.7
Tyres	1.4	7.3	12.6	28.1
Seat belts and airbags	0.5	2.5	0.4	1.2
Number plates and VIN	0.4	0.6	0.8	5.2
Body and structure	0.3	8.3	0.4	13.9
Steering	0.3	3.6	0.5	5.1
Road wheels	0.1	0.6	0.4	1.4

What testers fail most on the DB9 at 17 years

Fail items on the Aston Martin DB9 at 17 years (n=2,773), per 100 MOTs, with all cars at the same age (n=4,040,458).
Item	Area	Per 100 MOTs	All cars	Typical repair (estimate)
Side/position light not working	Lights and electrics	1.6	5.8	£10 to £47 per lamp
Wipers not clearing screen	Windscreen, wipers and mirrors	1.4	2.8	£15 to £30 per blade
Malfunction indicator lamp: inoperative or indicates a malfunction	Exhaust, emissions and leaks	1.4	2.2	diagnosis from £39 (rough guide)
Coil spring broken	Suspension	1.2	3.5	£64 to £236 per spring (rough guide)
Headlamp aim: too low	Lights and electrics	0.8	1.7	£16 to £39 per car (rough guide)

Early warnings: advisories and minor defects at 17 years

Advisories and minor defects are recorded, but the car still passes. Across all cars, a part with an advisory or minor defect failed at the next MOT 5.5 times in 100 (n=88,666,940 pairs of consecutive MOTs), against 0.3 times in 100 when the same part had none (n=12,936,860,350).

Advisories and minor defects on the Aston Martin DB9 at 17 years (n=2,773), per 100 MOTs, with all cars at the same age (n=4,040,458).
Item	Area	Per 100 MOTs	All cars	If it needs replacing (estimate)
Tread depth: worn close to legal limit/worn on edge	Tyres	6.5	17.9	£88 to £145 per tyre
Tyre condition: slightly damaged/cracking or perishing	Tyres	5.2	9.6	£88 to £145 per tyre
Brake pads: wearing thin	Brakes	4.4	6.6	£72 to £174 per axle (rough guide)
Brake discs: worn, pitted or scored, but not seriously weakened	Brakes	2.9	11.3	£148 to £376 per axle (rough guide)
Rigid brake pipes: corroded, covered in grease or other material	Brakes	2.6	10.5	£137 to £392 per car (rough guide)
Shock absorbers: has light misting of oil	Suspension	2.5	4.1	£122 to £484 per axle (pair) (rough guide)
Flexible brake hoses: has slight corrosion to ferrule	Brakes	2.2	2.3
Tyre condition: has a cut but not deep enough to reach the ply or cords	Tyres	1.1	1.0	£88 to £145 per tyre
Brake discs: worn, but not excessively	Brakes	1.0	2.2	£148 to £376 per axle (rough guide)
Windscreen: damaged but not adversely affecting driver's view	Windscreen, wipers and mirrors	1.0	3.6

Repair estimates are a guide for an independent garage: labour at the national median local garage rate (median £78 an hour from 65 garages, ONS price quotes) times estimated labour hours, plus a parts band. Labour hours and most parts bands are estimates, not quotes, and prices vary by model, engine and region. A warning light fault shows the cost of the diagnosis only.

How problems change with age

Fails per 100 MOTs in the three most common areas at 17 years. Ages with fewer than 1,000 tests are not shown.
Age	Tests (n)	Lights and electrics	Windscreen, wipers and mirrors	Brakes
15 years	1,594	3.8	1.9	2.6
16 years	1,991	4.5	1.8	2.3
17 years	2,773	4.7	2.3	1.9
18 years	2,571	5.3	2.3	2.6
19 years	1,884	4.8	2.1	2.2
20 years	1,260	4.4	2.6	2.0

What to check on a viewing

On the Aston Martin DB9, testers most often record side/position light not working; wipers not clearing screen; malfunction indicator lamp: inoperative or indicates a malfunction. Look at these first, then the areas below.

Lights and electrics

With someone outside, try every light: dipped and main beam, indicators, brake lights, fog lights and number plate lamps.
Check that the warning lights come on with the ignition and go out once the engine runs.
Look for misted, cracked or yellowed headlamp lenses.

Windscreen, wipers and mirrors

Look for chips or cracks in the windscreen, above all in front of the driver.
Run the wipers and washers: they should clear the screen without smearing.
Check that the mirrors are present, secure and not cracked.

Brakes

On the test drive the car should stop in a straight line without pulling, juddering or grinding.
Look at the discs through the wheels for a deep lip, heavy rust or scoring.
Check that the handbrake or electronic parking brake holds the car on a slope.
Ask when the pads, discs and brake fluid were last changed, and for the receipts.

Ask for the car's MOT history and service record: advisories that repeat from one year to the next show what has been left. GOV.UK MOT history.

Questions

What are the most common problems on the Aston Martin DB9?

At 17 years, the age with the most MOT tests (2,773), the fail items testers record most often on the Aston Martin DB9 are side/position light not working (1.6 per 100 MOTs), wipers not clearing screen (1.4 per 100 MOTs), malfunction indicator lamp: inoperative or indicates a malfunction (1.4 per 100 MOTs). The most common advisories or minor defects are tread depth: worn close to legal limit/worn on edge (6.5) and tyre condition: slightly damaged/cracking or perishing (5.2).

Which parts of the Aston Martin DB9 fail more often than on other cars?

None by more than 1 point per 100 MOTs at 17 years, compared with 4,040,458 MOTs of all cars the same age.

Other Aston Martin models

All Aston Martin models · Common problems by make

Read this with care. A fail rate is not a measure of build quality. How far cars are driven, how they are used and how well owners maintain them all change it, and wear items such as tyres and brake pads are common fails. Compare a model only with cars of the same age. Methodology and limits.

The all cars figures cover all class 4 vehicles (cars and light vans) tested at the same age.

Looking at a Aston Martin DB9?

These figures describe the model, not the car in front of you. Found one you might buy? See what the VetTheCar Buying Report covers, or use the tools that work without a registration.

See a sample report Car tools · MOT fail rates by model · Compare models by MOT record

Repair estimates: ONS consumer price quotes for local garage labour (09/2025 to 08/2026), the MOT inspection manual for defect wording, and estimated labour hours and parts bands. Not affiliated with or endorsed by ONS.

Source

Contains public sector information licensed under the Open Government Licence v3.0. Source: DVSA anonymised MOT test data, class 4 normal MOT tests, 2022 to 2025. MOT data updated 28 September 2026.

Not affiliated with or endorsed by DVSA. How we calculate these figures · Data sources