2021 Kia Niro 2 Ev — MOT failures & pass rate
Across 6,496 MOT tests analysed for the 2021 Kia Niro 2 Ev, the most common recorded failure areas were tyres, visibility and lighting & signalling. Its pass rate of 93.6% was above the average for cars of a similar age (91.6%).
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 5.3% | 341 |
| 2 | Visibility | 2.1% | 134 |
| 3 | Lighting & signalling | 2.0% | 129 |
| 4 | Brakes | 0.4% | 28 |
| 5 | Other defects | 0.1% | 8 |
| 6 | Seat belts & restraints | 0.1% | 7 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Tread depth | 175 |
| 2 | Wipers | 120 |
| 3 | Headlamp aim | 89 |
| 4 | Registration plate lamp(s) | 32 |
| 5 | Washers | 29 |
| 6 | Headlamp | 23 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Tyres | 17.9% | 1,161 |
| 2 | Other defects | 5.5% | 357 |
| 3 | Brakes | 3.1% | 204 |
| 4 | Visibility | 1.8% | 116 |
| 5 | Suspension | 0.8% | 53 |
| 6 | Lighting & signalling | 0.6% | 40 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 0-30k | 2,192 | 5.9% |
| 30-60k | 2,657 | 7.8% |
| 60-90k | 1,001 | 5.1% |
| 90-120k | 464 | 4.7% |
| 120-150k | 146 | 4.8% |
| 150k+ | 36 | 0.0% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2022 | 338 | 1.2% |
| 2023 | 718 | 2.5% |
| 2024 | 2,662 | 7.0% |
| 2025 | 2,776 | 7.6% |
What to check before buying a 2021 Niro 2 Ev
Before buying a 2021 Kia Niro 2 Ev, focus on the areas it most often fails on. Tyres accounted for 5.3% of tests for this year.
- Tyres (5.3% of tests): Usually a quick, known-cost fix, but check tread, age and uneven wear (which can hint at alignment or suspension issues). Typical repair: £50–£120 per tyre.
- Visibility (2.1% of tests): Wipers, washers, mirrors and screen damage — usually inexpensive, but check for chips in the driver's line of sight. Typical repair: £15–£150.
- Lighting & signalling (2.0% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
How many 2021 Kia Niro 2 Evs pass their MOT?
93.6% of the 6,496 2021 Kia Niro 2 Ev MOT tests in this dataset passed — a 6.4% fail rate.
What is the most common MOT failure on a 2021 Kia Niro 2 Ev?
Tyres, recorded in 5.3% of tests, followed by visibility (2.1%).
Does the 2021 Niro 2 Ev get worse with mileage?
Its MOT fail rate rises from 5.9% in the 0-30k band to 0.0% in the 150k+ band.
Methodology & source. Based on 6,496 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-01. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.