2017 Hyundai I800 — MOT failures & pass rate
Across 8,064 MOT tests, the 2017 Hyundai I800 recorded an 82.2% pass rate. That is 5.1 percentage points worse than all cars of a similar age, which fail at 12.7%. Failures cluster in lighting & signalling, brakes and tyres.
What the MOT record shows
Lighting & signalling dominates the failure mix at 19.0% of all tests — 13.1 points clear of brakes, so it is the first thing to check.
At component level the recurring items are headlamp aim, position lamp and headlamp — headlamp aim alone was recorded 904 times.
Condition tracks the odometer closely. Failures run at 11.6% in the 0-30k band and 16.0% in the 150k+ band, a 4.4-point spread.
Advisories point at the next bill rather than this one: brakes was flagged on 24.3% of tests without failing them.
The trend is worsening — 16.1% of tests failed in 2021 against 19.1% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 19.0% | 1,531 |
| 2 | Brakes | 5.9% | 477 |
| 3 | Tyres | 5.9% | 473 |
| 4 | Visibility | 4.9% | 393 |
| 5 | Emissions & environmental | 4.9% | 392 |
| 6 | Suspension | 1.0% | 78 |
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 | 904 |
| 2 | Position lamp | 607 |
| 3 | Headlamp | 431 |
| 4 | Malfunction indicator lamp | 368 |
| 5 | Brake pads | 346 |
| 6 | Tread depth | 302 |
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 | 24.3% | 1,962 |
| 2 | Tyres | 23.4% | 1,886 |
| 3 | Other defects | 11.5% | 930 |
| 4 | Lighting & signalling | 8.6% | 696 |
| 5 | Visibility | 4.5% | 364 |
| 6 | Seat belts & restraints | 4.0% | 320 |
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 | 328 | 11.6% |
| 30-60k | 2,824 | 15.7% |
| 60-90k | 3,094 | 19.8% |
| 90-120k | 1,052 | 19.5% |
| 120-150k | 391 | 20.0% |
| 150k+ | 375 | 16.0% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 1,582 | 16.1% |
| 2022 | 1,604 | 16.5% |
| 2023 | 1,625 | 17.7% |
| 2024 | 1,652 | 19.6% |
| 2025 | 1,601 | 19.1% |
What to check before buying a 2017 I800
On a 2017 I800, lighting & signalling is what the MOT record says goes wrong most — it appeared in 19.0% of tests. Check these areas before you commit.
- Lighting & signalling (19.0% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (5.9% 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 (5.9% 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 2017 Hyundai I800s pass their MOT?
82.2% of the 8,064 2017 Hyundai I800 MOT tests in this dataset passed — a 17.8% fail rate.
What is the most common MOT failure on a 2017 Hyundai I800?
Lighting & signalling, recorded in 19.0% of tests, followed by brakes (5.9%).
Does the 2017 I800 get worse with mileage?
Its MOT fail rate rises from 11.6% in the 0-30k band to 16.0% in the 150k+ band.
Methodology & source. Based on 8,064 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.