2017 Hyundai i30 — MOT failures & pass rate
38,517 MOT tests on the 2017 Hyundai i30 are in this dataset, and 88.0% of them passed. That is effectively the same as small family cars of a similar age (11.9% fail rate), so the MOT record here is unremarkable in either direction. Failures cluster in tyres, visibility and brakes.
What the MOT record shows
No single area dominates — tyres (5.7%) and visibility (4.0%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are wipers, tread depth and brake pads — wipers alone was recorded 1,208 times.
A 150k+ example is materially riskier than a 0-30k one: 18.0% versus 7.4%.
The petrol cars hold up better: 10.9% fail against 13.7% for diesel, a 2.8-point gap across 38,517 tests.
Tyres is the most common advisory, noted on 26.1% of tests — work that passed today but is likely due soon.
The trend is worsening — 9.2% of tests failed in 2021 against 13.7% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 5.7% | 2,196 |
| 2 | Visibility | 4.0% | 1,548 |
| 3 | Brakes | 3.8% | 1,477 |
| 4 | Lighting & signalling | 3.7% | 1,409 |
| 5 | Emissions & environmental | 0.9% | 332 |
| 6 | Suspension | 0.7% | 259 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Wipers | 1,208 |
| 2 | Tread depth | 1,028 |
| 3 | Brake pads | 748 |
| 4 | Headlamp aim | 606 |
| 5 | Washers | 587 |
| 6 | Headlamp | 400 |
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 | 26.1% | 10,061 |
| 2 | Brakes | 17.7% | 6,817 |
| 3 | Other defects | 6.8% | 2,635 |
| 4 | Visibility | 3.4% | 1,310 |
| 5 | Suspension | 3.2% | 1,233 |
| 6 | Lighting & signalling | 1.5% | 566 |
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 | 9,048 | 7.4% |
| 30-60k | 18,653 | 11.8% |
| 60-90k | 7,944 | 15.7% |
| 90-120k | 2,002 | 16.8% |
| 120-150k | 546 | 15.6% |
| 150k+ | 323 | 18.0% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Petrol | 24,096 | 10.9% |
| Diesel | 14,421 | 13.7% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 7,587 | 9.2% |
| 2022 | 7,687 | 10.8% |
| 2023 | 7,707 | 11.7% |
| 2024 | 7,834 | 14.2% |
| 2025 | 7,702 | 13.7% |
What to check before buying a 2017 i30
The failure pattern for this year is specific enough to inspect against: tyres accounted for 5.7% of tests. Start there.
- Tyres (5.7% 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 (4.0% 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.
- Brakes (3.8% of tests): Pads/discs are routine wear; binding, imbalance or corroded pipes are more serious — test for pulling under braking. Typical repair: £100–£350 per axle.
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 2017 Hyundai i30s pass their MOT?
88.0% of the 38,517 2017 Hyundai i30 MOT tests in this dataset passed — a 12.0% fail rate.
What is the most common MOT failure on a 2017 Hyundai i30?
Tyres, recorded in 5.7% of tests, followed by visibility (4.0%).
Does the 2017 i30 get worse with mileage?
Its MOT fail rate rises from 7.4% in the 0-30k band to 18.0% in the 150k+ band.
Methodology & source. Based on 38,517 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.