Aston martin DB9 - 2004
103.8 faults per 100 tests
Year average for all cars of 2004 is 384.6 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Aston martin DB9, model year 2004.
Sample size: 344 cars, 683 tests and 709 recorded faults.
0%
Less faults compared to the average car of same model year
Less faults compared to the average car of same model year
Quick summary
Total: 344 cars
The Aston Martin DB9 (2004) has a notably lower overall defect rate of 104 per 100 vehicles, which is 73% better than the average for cars of the same year at 382 per 100. In specific mileage segments, the defect rate increases with higher mileage, peaking at 467 per 100 for vehicles over 124,000 miles, indicating potential wear issues as cars age. This model excels particularly in categories like brakes, steering, visibility, and body structure, showing significant improvement over the average defect rates in these areas. Overall, the DB9 demonstrates a strong performance in maintaining reliability compared to its peers.
Cars by mileage segment
Total: 344 cars
More model years for Aston martin DB9
Other models from Aston martin
Categories
Brakes
▲ 63.5% better
60.0 faults / 100 tests
Year avg: 164.2 / 100 tests
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Brake hose ferrules: excessively corroded
- Brake disc or drum: significantly and obviously worn
- Brake lining or pad: worn below 1.5mm
- Brake pipe damaged or excessively corroded
Steering
▲ 92.8% better
1.8 faults / 100 tests
Year avg: 24.9 / 100 tests
- Power steering fluid leaking or system malfunctioning
- Steering rack gaiter or ball joint dust cover: damaged or deteriorated
Visibility
▲ 63.1% better
10.8 faults / 100 tests
Year avg: 29.3 / 100 tests
- Wiper blade: missing or obviously not clearing the windscreen
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
- Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
- Wiper blade: defective
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
Lights & Electrics
▲ 68.3% better
34.8 faults / 100 tests
Year avg: 109.9 / 100 tests
- Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
- Product on the lens or light source which obviously reduces light intensity or changes emitted colour to other than white or yellow
- Lamp emitted colour, position or intensity not in accordance with the requirements
- The aim of a headlamp is not within limits laid down in the requirements
- Stop lamp(s): all missing or inoperative
Wheels & Suspension
▲ 73.0% better
84.6 faults / 100 tests
Year avg: 312.9 / 100 tests
- Tyre tread depth not in accordance with the requirements
- A shock absorber damaged … or showing signs of severe leakage
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- A suspension component: excessively damaged or corroded
- A spring: or spring component fractured or seriously weakened
Body/Structure
▲ 86.6% better
8.5 faults / 100 tests
Year avg: 63.6 / 100 tests
- A driver’s seat: fore and aft adjustment mechanism not working as intended
- A transmission shaft constant velocity joint boot: severely deteriorated
- Exhaust system has a major leak or is insecure
- Exhaust system has a major leak or is insecure
Equipment
▲ 87.0% better
1.8 faults / 100 tests
Year avg: 13.8 / 100 tests
- ESC MIL indicates a system malfunction
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
- A seat belt: webbing or flexible stalk significantly stretched or weakened
- A seat belt:
- ESC MIL indicates a system malfunction
Other
▲ 89.5% better
5.3 faults / 100 tests
Year avg: 50.5 / 100 tests
- Engine MIL inoperative or indicating a malfunction
- Emissions test unable to be completed
- Engine MIL inoperative or indicating a malfunction
- Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
- Exhaust emits excessive dense blue or clearly visible black smoke during acceleration which would obscure the view of other road users
Fault rate by mileage segment
Model
Year average
* Metric: faults per 100 tests.
Most common faults (Top 10)
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 120
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 73
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 40
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 38
Brake hose ferrules: excessively corroded
ADVISORY
Occurrences: 32
A suspension component: excessively damaged or corroded
ADVISORY
Occurrences: 29
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 29
Lamp emitted colour, position or intensity not in accordance with the requirements
ADVISORY
Occurrences: 26
Exhaust system has a major leak or is insecure
ADVISORY
Occurrences: 24
A shock absorber damaged … or showing signs of severe leakage
ADVISORY
Occurrences: 22
Serious faults (Top 10)
Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
FAIL
Occurrences: 17
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 15
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 12
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 10
Stop lamp(s): all missing or inoperative
FAIL
Occurrences: 6
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 6
Warning device shows system malfunction
FAIL
Occurrences: 6
Headlamp emitted colour, position or intensity not in accordance with the requirements
FAIL
Occurrences: 5
Brake hose ferrules: excessively corroded
FAIL
Occurrences: 5
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 5