Mazda 6 - 2015
191.3 faults per 100 tests
Year average for all cars of 2015 is 174.5 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mazda 6, model year 2015.
Sample size: 6,826 cars, 14,768 tests and 28,252 recorded faults.
0%
More faults compared to the average car of same model year
More faults compared to the average car of same model year
Quick summary
Total: 6,826 cars
The 2015 Mazda 6 has an overall defect rate of 191 per 100 vehicles, which is 12% higher than the average for cars of the same year at 170 per 100. Notably, the Mazda 6 shows a significant increase in defects as mileage increases, particularly in the highest mileage category, where the defect rate reaches 324 per 100. While the model excels in areas such as steering, lights and electrics, and body structure, it struggles with brakes and wheels, showing higher defect rates than the average. These findings suggest that while the Mazda 6 performs well in several key areas, there are specific concerns that could affect its overall reliability.
Cars by mileage segment
Total: 6,826 cars
Categories
Brakes
▼ 36.0% worse
115.2 faults / 100 tests
Year avg: 84.7 / 100 tests
- Brake lining or pad: worn below 1.5mm
- Brake pipe damaged or excessively corroded
- Brake disc or drum: significantly and obviously worn
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Brake lining or pad: worn below 1.5mm
Steering
▲ 50.5% better
4.9 faults / 100 tests
Year avg: 9.9 / 100 tests
- A steering ball joint: with excessive wear or free play
- Steering rack gaiter or ball joint dust cover: missing or no longer prevents the ingress of dirt etc.
- Steering rack gaiter or ball joint dust cover: damaged or deteriorated
- A steering ball joint: with excessive wear or free play
- Steering linkage retaining or locking device missing or ineffective
Visibility
▲ 12.4% better
14.1 faults / 100 tests
Year avg: 16.1 / 100 tests
- Wiper blade: defective
- 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: missing or obviously not clearing the windscreen
- Wiper blade: missing or obviously not clearing the windscreen
Lights & Electrics
▲ 41.9% better
18.0 faults / 100 tests
Year avg: 31.0 / 100 tests
- Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
- A rear registration plate lamp or light source missing or inoperative: when rear registration plate has 2 or more lamps or light sources
- The aim of a headlamp is not within limits laid down in the requirements
- The aim of a headlamp is not within limits laid down in the requirements
- Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
Wheels & Suspension
▼ 19.8% worse
213.6 faults / 100 tests
Year avg: 178.3 / 100 tests
- A suspension pin, bush, joint or bearing: excessively worn
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- Tyre tread depth not in accordance with the requirements
- A suspension component: excessively damaged or corroded
- A suspension pin, bush, joint or bearing: excessively worn
Body/Structure
▲ 63.2% better
4.3 faults / 100 tests
Year avg: 11.7 / 100 tests
- Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
- Exhaust system has a major leak or is insecure
- Exhaust system has a major leak or is insecure
- A transmission shaft constant velocity joint boot: severely deteriorated
- Body, cab or chassis: excessively corroded at mounting points
Equipment
▲ 75.0% better
1.0 faults / 100 tests
Year avg: 4.0 / 100 tests
- ESC MIL indicates a system malfunction
- A seat belt: webbing or flexible stalk significantly stretched or weakened
- A seat belt: or flexible stalk damaged
- A seat belt:
- Seat belt buckle missing, damaged or not functioning as intended
Other
▲ 12.1% better
11.6 faults / 100 tests
Year avg: 13.2 / 100 tests
- Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
- Smoke opacity levels exceed the manufacturer’s specified limit
- Exhaust on a vehicle fitted with a diesel particulate filter emits visible smoke of any colour
- Engine MIL inoperative or indicating a malfunction
- Engine MIL inoperative or indicating a malfunction
Fault rate by mileage segment
Model
Year average
* Metric: faults per 100 tests.
Most common faults (Top 10)
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 4,082
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 3,285
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 2,176
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 2,141
A suspension component: excessively damaged or corroded
ADVISORY
Occurrences: 2,119
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 2,059
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 2,053
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 672
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 638
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 439
Serious faults (Top 10)
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 672
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 638
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 439
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 292
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 255
Brake pipe damaged or excessively corroded
FAIL
Occurrences: 246
Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
FAIL
Occurrences: 197
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 172
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 164
A suspension joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 151