SEAT Leon Mk4 (2020–2025): what fails at MOT
Across 7,713 MOT tests of the SEAT Leon Mk4 (2020–2025) in the DfT's 2023 MOT data (initial tests, retests excluded), 12.4% failed — about 1 in 8. The parts that fail most are tyres (5.9% of tests), lights and electrics (2.6%), wipers, windscreen and mirrors (2.0%), suspension (1.3%) and brakes (1.0%).
Allowing for age and mileage, the Leon Mk4 has about as many MOT failures as the average car of the same age and mileage. That puts it last of the three SEAT Leon generations on MOT results; the Leon Mk3 (2012–2020) does best.
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.
Leon Mk4 (2020–2025)
MOT: 12.4% of 7,713 initial tests failed — about as many failures than the average car of the same age and mileage
| # | Part / area | Share of MOT tests failing |
|---|---|---|
| 1 | tyres | 5.9% |
| 2 | lights and electrics | 2.6% |
| 3 | wipers, windscreen and mirrors | 2.0% |
| 4 | suspension | 1.3% |
| 5 | brakes | 1.0% |
Questions
What fails most on a SEAT Leon Mk4 at MOT?
The most common MOT failure is tyres: 5.9% of SEAT Leon Mk4 (2020–2025) MOT tests in the 2023 data failed on tyres. Next come lights and electrics (2.6%) and wipers, windscreen and mirrors (2.0%).
How often does a SEAT Leon Mk4 fail its MOT?
12.4% of SEAT Leon Mk4 (2020–2025) MOT tests in the 2023 data failed (about 1 in 8), counting initial tests only, across 7,713 tests.
Is the SEAT Leon Mk4 (2020–2025) reliable?
On MOT results, the SEAT Leon Mk4 has about as many MOT failures as the average car of the same age and mileage. MOT data covers safety and emissions items, not engines or gearboxes.
Does this SEAT Leon 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.