Toyota Yaris Mk4 (2020–2025): what fails at MOT
Across 11,519 MOT tests of the Toyota Yaris Mk4 (2020–2025) in the DfT's 2023 MOT data (initial tests, retests excluded), 8.7% failed — about 1 in 11. The parts that fail most are wipers, windscreen and mirrors (3.5% of tests), tyres (2.6%), lights and electrics (2.2%), suspension (0.8%) and brakes (0.5%).
Allowing for age and mileage, the Yaris Mk4 has 10% fewer MOT failures than the average car of the same age and mileage. That puts it first of the three Toyota Yaris generations on MOT results.
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.
Yaris Mk4 (2020–2025)
MOT: 8.7% of 11,519 initial tests failed — 10% fewer failures than the average car of the same age and mileage
| # | Part / area | Share of MOT tests failing |
|---|---|---|
| 1 | wipers, windscreen and mirrors | 3.5% |
| 2 | tyres | 2.6% |
| 3 | lights and electrics | 2.2% |
| 4 | suspension | 0.8% |
| 5 | brakes | 0.5% |
Questions
What fails most on a Toyota Yaris Mk4 at MOT?
The most common MOT failure is wipers, windscreen and mirrors: 3.5% of Toyota Yaris Mk4 (2020–2025) MOT tests in the 2023 data failed on wipers, windscreen and mirrors. Next come tyres (2.6%) and lights and electrics (2.2%).
How often does a Toyota Yaris Mk4 fail its MOT?
8.7% of Toyota Yaris Mk4 (2020–2025) MOT tests in the 2023 data failed (about 1 in 11), counting initial tests only, across 11,519 tests.
Is the Toyota Yaris Mk4 (2020–2025) reliable?
On MOT results, the Toyota Yaris Mk4 has 10% fewer 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 Toyota Yaris Mk4 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.