Porsche 718 CAYMAN GT4 - 2021
15.2 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 Porsche 718 CAYMAN GT4, model year 2021.
Sample size: 312 cars, 873 tests and 133 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: 312 cars
The 2021 Porsche 718 Cayman GT4 shows a significantly lower overall defect rate of 15 per 100 vehicles compared to the yearly average of 79 per 100, indicating an impressive performance that is 81% better than average. Notably, it excels in categories such as brakes and steering, with defect rates of just 2% and 0% respectively, far below the averages of 38% and 1%. Although tyre wear is not specifically highlighted, the model demonstrates strong reliability across various other metrics, particularly in visibility and lights, where defects are minimal. This car stands out as a well-engineered option for buyers looking for a 2021 model with fewer mechanical issues.
Cars by mileage segment
Total: 312 cars
More model years for Porsche 718 CAYMAN GT4
Other models from Porsche
Categories
Brakes
▲ 95.5% better
1.8 faults / 100 tests
Year avg: 40.0 / 100 tests
- Leaking brake pipe or connection: on a hydraulic system
- Excessive fluctuation in brake effort through each wheel revolution
- Excessive fluctuation in brake effort through each wheel revolution
- Brake lining or pad: worn below 1.5mm
Steering
▲ 100.0% better
0.0 faults / 100 tests
Year avg: 0.7 / 100 tests
Visibility
▲ 89.0% better
1.6 faults / 100 tests
Year avg: 14.5 / 100 tests
- Windscreen or window excessively tinted: but not adversely affecting driver’s view
- Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
Lights & Electrics
▲ 95.5% better
0.5 faults / 100 tests
Year avg: 11.2 / 100 tests
- The aim of a headlamp is not within limits laid down in the requirements
Wheels & Suspension
▲ 71.1% better
25.2 faults / 100 tests
Year avg: 87.3 / 100 tests
- A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- 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
- A wheel: badly distorted or wear between wheel and hub at spigot mounting
Body/Structure
▲ 90.5% better
0.2 faults / 100 tests
Year avg: 2.1 / 100 tests
- Exhaust system has a major leak or is insecure
Equipment
▲ 100.0% better
0.0 faults / 100 tests
Year avg: 1.5 / 100 tests
Other
▲ 59.3% better
1.1 faults / 100 tests
Year avg: 2.7 / 100 tests
- Exhaust noise levels in excess of those permitted
- Emission control equipment fitted by the manufacturer: missing, obviously modified or obviously defective
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: 48
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 20
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 13
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 12
A wheel: badly distorted or wear between wheel and hub at spigot mounting
ADVISORY
Occurrences: 6
A spring: or spring component fractured or seriously weakened
ADVISORY
Occurrences: 4
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 4
Windscreen or window excessively tinted: but not adversely affecting driver’s view
MINOR
Occurrences: 4
Emission control equipment fitted by the manufacturer: missing, obviously modified or obviously defective
FAIL
Occurrences: 3
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 3
Serious faults (Top 10)
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 13
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 4
Emission control equipment fitted by the manufacturer: missing, obviously modified or obviously defective
FAIL
Occurrences: 3
Leaking brake pipe or connection: on a hydraulic system
FAIL
Occurrences: 3
Excessive fluctuation in brake effort through each wheel revolution
FAIL
Occurrences: 2
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 2
Exhaust noise levels in excess of those permitted
FAIL
Occurrences: 2
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 1