Ford MUSTANG - 2021
65.2 faults per 100 tests
Year average for all cars of 2021 is 80.0 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Ford MUSTANG, model year 2021.
Sample size: 3,545 cars, 7,628 tests and 4,975 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: 3,545 cars
The 2021 Ford Mustang has an overall defect rate of 65 per 100 vehicles, which is significantly lower than the yearly average of 79 per 100, marking a 17% improvement. Notably, it excels in categories such as brakes, steering, and visibility, showcasing a substantially lower incidence of defects compared to the average car. However, the Mustang does face challenges with wheels, suspensions, and axles, displaying a higher defect rate than the average. Mileage trends reveal that the defect rates increase with distance travelled, but the Mustang remains competitive across the lower mileage segments. Overall, this model demonstrates strong performance in various critical areas, while still having room for improvement in suspension-related issues.
Cars by mileage segment
Total: 3,545 cars
More model years for Ford MUSTANG
Other models from Ford
Categories
Brakes
▲ 71.3% better
11.5 faults / 100 tests
Year avg: 40.0 / 100 tests
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Brake disc or drum: significantly and obviously worn
- Parking brake efficiency: below minimum requirement
- Excessive fluctuation in brake effort through each wheel revolution
- Brake lining or pad: worn below 1.5mm
Steering
▲ 85.7% better
0.1 faults / 100 tests
Year avg: 0.7 / 100 tests
- A steering ball joint: with excessive wear or free play
- Track rod or drag link ends seriously misaligned
- Steering rack gaiter or ball joint dust cover: damaged or deteriorated
Visibility
▲ 59.3% better
5.9 faults / 100 tests
Year avg: 14.5 / 100 tests
- Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
- Wiper blade: missing or obviously not clearing the windscreen
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
- Wiper blade: defective
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
Lights & Electrics
▲ 48.2% better
5.8 faults / 100 tests
Year avg: 11.2 / 100 tests
- The aim of a headlamp is not within limits laid down in the requirements
- 4.11 (a) (iii)
- The aim of a headlamp is not within limits laid down in the requirements
- Beam image obviously incorrect
- Lamp: emitted colour, position or intensity not in accordance with the requirements
Wheels & Suspension
▼ 19.4% worse
104.2 faults / 100 tests
Year avg: 87.3 / 100 tests
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- Tyre tread depth not in accordance with the requirements
- Tyre tread depth not in accordance with the requirements
- A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
Body/Structure
▲ 76.2% better
0.5 faults / 100 tests
Year avg: 2.1 / 100 tests
- A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
- Towbar: obstructing the registration plate or any lamp
- Exhaust system has a major leak or is insecure
- A transmission shaft constant velocity joint boot: severely deteriorated
- A door hinge, catch or pillar: excessively deteriorated
Equipment
▲ 26.7% better
1.1 faults / 100 tests
Year avg: 1.5 / 100 tests
- A seat belt: webbing or flexible stalk significantly stretched or weakened
- Seat belt not functioning as intended or of an incorrect type
- Seat belt buckle missing, damaged or not functioning as intended
- A seat belt: or flexible stalk damaged
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
Other
▲ 55.6% better
1.2 faults / 100 tests
Year avg: 2.7 / 100 tests
- Engine MIL inoperative or indicating a malfunction
- Emissions levels exceed default limits
- Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
- Lambda coefficient outside the default limits or the range specified by the manufacturer
- Exhaust noise levels in excess of those permitted
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: 2,711
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 419
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 287
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 184
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 174
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 157
The aim of a headlamp is not within limits laid down in the requirements
PRS
Occurrences: 149
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 134
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 94
A shock absorber damaged … or showing signs of severe leakage
ADVISORY
Occurrences: 74
Serious faults (Top 10)
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 184
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 174
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 134
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 37
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 20
Seat belt buckle missing, damaged or not functioning as intended
FAIL
Occurrences: 18
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 17
Parking brake efficiency: below minimum requirement
FAIL
Occurrences: 14
A shock absorber damaged … or showing signs of severe leakage
FAIL
Occurrences: 9
Excessive fluctuation in brake effort through each wheel revolution
FAIL
Occurrences: 7