2015 Hyundai I800 — MOT failures & pass rate
968 MOT tests on the 2015 Hyundai I800 are in this dataset, and 77.7% of them passed. All cars of a similar age fail 16.4% of the time, so this is 5.9pp worse than the group it competes with. Failures cluster in lighting & signalling, brakes and tyres.
What the MOT record shows
Lighting & signalling dominates the failure mix at 17.7% of all tests — 4.5 points clear of brakes, so it is the first thing to check.
At component level the recurring items are headlamp aim, position lamp and rbt (sp) — headlamp aim alone was recorded 80 times.
A 150k+ example is materially riskier than a 0-30k one: 25.0% versus 14.0%.
Advisories point at the next bill rather than this one: brakes was flagged on 25.3% of tests without failing them.
The trend is worsening — 19.9% of tests failed in 2021 against 24.6% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 17.7% | 171 |
| 2 | Brakes | 13.1% | 127 |
| 3 | Tyres | 5.7% | 55 |
| 4 | Visibility | 4.8% | 46 |
| 5 | Emissions & environmental | 3.0% | 29 |
| 6 | Suspension | 2.1% | 20 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Headlamp aim | 80 |
| 2 | Position lamp | 71 |
| 3 | Rbt (sp) | 59 |
| 4 | Headlamp | 54 |
| 5 | Service brake performance | 45 |
| 6 | Brake pads | 43 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Brakes | 25.3% | 245 |
| 2 | Tyres | 22.3% | 216 |
| 3 | Lighting & signalling | 11.3% | 109 |
| 4 | Suspension | 9.7% | 94 |
| 5 | Other defects | 8.9% | 86 |
| 6 | Visibility | 5.7% | 55 |
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 | 43 | 14.0% |
| 30-60k | 275 | 19.6% |
| 60-90k | 295 | 24.1% |
| 90-120k | 201 | 24.9% |
| 120-150k | 66 | 19.7% |
| 150k+ | 88 | 25.0% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 196 | 19.9% |
| 2022 | 195 | 20.5% |
| 2023 | 192 | 22.9% |
| 2024 | 194 | 23.7% |
| 2025 | 191 | 24.6% |
What to check before buying a 2015 I800
On a 2015 I800, lighting & signalling is what the MOT record says goes wrong most — it appeared in 17.7% of tests. Check these areas before you commit.
- Lighting & signalling (17.7% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (13.1% 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.
- 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.
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 2015 Hyundai I800s pass their MOT?
77.7% of the 968 2015 Hyundai I800 MOT tests in this dataset passed — a 22.3% fail rate.
What is the most common MOT failure on a 2015 Hyundai I800?
Lighting & signalling, recorded in 17.7% of tests, followed by brakes (13.1%).
Does the 2015 I800 get worse with mileage?
Its MOT fail rate rises from 14.0% in the 0-30k band to 25.0% in the 150k+ band.
Methodology & source. Based on 968 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.