Across 9,378 MOT tests of the Ford Mustang in the DfT's 2023 MOT data (initial tests, retests excluded), 16.2% failed — about 1 in 6. The parts that fail most are tyres (5.6% of tests), brakes (4.6%), wipers, windscreen and mirrors (4.6%), lights and electrics (2.2%) and suspension (1.7%).
Allowing for age and mileage, the Ford Mustang has 21% more MOT failures than the average car of the same age and mileage.
The MOT checks safety and emissions items — brakes, suspension, steering, lights, tyres, body structure and exhaust emissions. It does not test engines, gearboxes or most electronics, so those faults only show up here when they cause an emissions failure or a leak.
Mustang (2015–2025)
MOT: 16.2% of 9,378 initial tests failed — 21% more failures than the average car of the same age and mileage
| # | Part / area | Share of MOT tests failing |
|---|---|---|
| 1 | tyres | 5.6% |
| 2 | brakes | 4.6% |
| 3 | wipers, windscreen and mirrors | 4.6% |
| 4 | lights and electrics | 2.2% |
| 5 | suspension | 1.7% |
Questions
What fails most on a Ford Mustang at MOT?
The most common MOT failure is tyres: 5.6% of Ford Mustang MOT tests in the 2023 data failed on tyres. Next come brakes (4.6%) and wipers, windscreen and mirrors (4.6%).
How often does a Ford Mustang fail its MOT?
16.2% of Ford Mustang MOT tests in the 2023 data failed (about 1 in 6), counting initial tests only, across 9,378 tests. Allowing for age and mileage, that is 21% more MOT failures than the average car of the same age and mileage.
Is the Ford Mustang reliable?
On MOT results, the Ford Mustang has 21% more MOT failures than the average car of the same age and mileage. MOT data covers safety and emissions items, not engines or gearboxes.
Does this Ford Mustang data cover engine and gearbox problems?
No. The MOT checks safety and emissions items — brakes, suspension, steering, lights, tyres, body structure and exhaust emissions. It does not test engines, gearboxes or most electronics, so those faults only show up here when they cause an emissions failure or a leak.