2020 Mazda 3 (first used 2020) MOT pass rate, common failures & what to check
In 2025, 87.2% of Mazda 3s first used in 2020 passed their MOT first time, against 86.0% for all cars first used in 2020. Across 12,919 3 first tests from 2023 to 2025, the most common failure areas were tyres, visibility (wipers, washers and windscreen) and lamps and electrical equipment.
This page analyses first MOT tests for Mazda 3s first used in 2020 (all trims grouped): 2021 to 2025 for the pass-rate trend, and 2023 to 2025 for the failure and advisory analysis — plus what is worth checking before you buy one.
Data: DVSA anonymised MOT tests to December 2025 · Calculated by SortedCars · Updated October 2026
How the 2020 Mazda 3 MOT pass rate has changed
Share of first tests passed in each year, 3s first used in 2020 against all cars first used in 2020 (any make or fuel; not adjusted for mileage, fuel or use). In 2025 the 3 figure was in line with the all-cars figure.
View this chart as a table
| Test year | 2020 3 | All cars first used 2020 | 3 first tests |
|---|---|---|---|
| 2021 | fewer than 500 tests | 84.7% | 14 |
| 2022 | fewer than 500 tests | 90.2% | 104 |
| 2023 | 90.3% | 87.7% | 4,334 |
| 2024 | 89.1% | 86.9% | 4,273 |
| 2025 | 87.2% | 86.0% | 4,312 |
Common 2020 Mazda 3 MOT failures
Share of the 1,437 failed first tests (2023–2025) with at least one failure in each area. A test can fail in more than one area, so the shares add up to more than 100%.
Most common failure items
| DVSA failure item | Share of failed first tests | Tests |
|---|---|---|
| Wipers: does not clear the windscreen effectively | 17.3% | 248 |
| Tyre condition: has a bulge, caused by separation or partial failure of its structure | 15.7% | 225 |
| Tyre condition: has a cut in excess of the requirements deep enough to reach the ply or cords | 12.0% | 172 |
| Headlamp aim: too high | 11.9% | 171 |
| Washers: provides insufficient washer liquid | 8.1% | 116 |
Item names are DVSA’s own wording. 2023–2025 combined.
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What to check on a 2020 Mazda 3 before buying
The three areas where failed first tests most often had a fault, 2023–2025.
- Tyres. Worth checking the tread depth across the whole width of each tyre, and the sidewalls for cuts, cracks and bulges.
- Wipers and windscreen. Worth checking that the wipers clear the screen cleanly, that the washers work, and that there are no chips or cracks in the driver’s view.
- Lamps and electrics. Ask someone to watch while you work the brake lights, indicators, sidelights, dipped and main beam, and the number-plate lamps.
Common 2020 Mazda 3 MOT advisories
Advisories are points the tester noted that did not fail the car. Most common on 2020 3s, as a share of all 12,919 first tests, 2023–2025.
| DVSA advisory item | Share of first tests | Tests |
|---|---|---|
| Tread depth: worn close to legal limit/worn on edge | 8.7% | 1,124 |
| Brake discs: worn, pitted or scored, but not seriously weakened | 8.4% | 1,089 |
| Tyre condition: slightly damaged/cracking or perishing | 8.1% | 1,044 |
| Brake pads: wearing thin | 7.6% | 984 |
| Tyre condition: has a cut but not deep enough to reach the ply or cords | 2.6% | 333 |
Questions about the 2020 Mazda 3 MOT
What is the MOT pass rate of a 2020 Mazda 3?
In 2025, 87.2% of 3s first used in 2020 passed their MOT first time, against 86.0% for all cars first used in 2020. A car fixed during the test counts as a fail.
What does a 2020 3 most often fail its MOT on?
Tyres (in 42.2% of failed first tests, 2023–2025), visibility (wipers, washers and windscreen) (27.0%) and lamps and electrical equipment (19.1%). The single most common item was “Wipers: does not clear the windscreen effectively” (17.3%).
How often does a 2020 Mazda 3 fail its MOT?
In 2025, 12.8% of first tests on 3s first used in 2020 did not pass first time: 9.4% failed, and a further 3.4% had a fault fixed during the test (counted as a fail here). Across 2023–2025, 1,437 of 12,919 first tests did not pass first time.
What are the most common 2020 Mazda 3 MOT advisories?
“Tread depth: worn close to legal limit/worn on edge” (on 8.7% of first tests, 2023–2025), “Brake discs: worn, pitted or scored, but not seriously weakened” (8.4%), “Tyre condition: slightly damaged/cracking or perishing” (8.1%), “Brake pads: wearing thin” (7.6%) and “Tyre condition: has a cut but not deep enough to reach the ply or cords” (2.6%).
Is a 2020 Mazda 3 reliable?
An MOT pass rate shows what failed at the test, not how reliable a car is. For this group of cars the first-time pass rate went from 90.3% in 2023 to 87.2% in 2025. For one particular car, its own MOT history matters more than the average.
Other cars first used in 2020
The most-tested cars from the same year. Each page uses the same method.
2020 Ford Fiesta MOT statistics · 2020 Vauxhall Corsa MOT statistics · 2020 Volkswagen Golf MOT statistics · 2020 Ford Focus MOT statistics · 2020 MINI Hatch MOT statistics
Checking a specific 2020 3?
The numbers above cover every 3 first used in 2020 and tested in Great Britain. Our free check shows the actual MOT history, mileage record and tax status of the one you are looking at.
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