2020 Hyundai I800 — MOT failures & pass rate
Across 300 MOT tests, the 2020 Hyundai I800 recorded an 81.3% pass rate. Against all cars of a similar age (9.0% fail rate), the 2020 I800 comes out 9.6pp worse. Failures cluster in lighting & signalling, visibility and tyres.
What the MOT record shows
Lighting & signalling dominates the failure mix at 19.3% of all tests — 13.0 points clear of visibility, so it is the first thing to check.
At component level the recurring items are headlamp, headlamp aim and wipers — headlamp alone was recorded 38 times.
Condition tracks the odometer closely. Failures run at 16.5% in the 0-30k band and 22.2% in the 60-90k band, a 5.7-point spread.
Advisories point at the next bill rather than this one: tyres was flagged on 20.7% of tests without failing them.
The trend is improving — the fail rate fell from 20.0% in 2023 to 17.2% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 19.3% | 58 |
| 2 | Visibility | 6.3% | 19 |
| 3 | Tyres | 4.0% | 12 |
| 4 | Brakes | 3.7% | 11 |
| 5 | Emissions & environmental | 1.0% | 3 |
| 6 | Body, structure & corrosion | 0.7% | 2 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Headlamp | 38 |
| 2 | Headlamp aim | 22 |
| 3 | Wipers | 21 |
| 4 | Brake pads | 13 |
| 5 | Position lamp | 9 |
| 6 | Headlamp aim not tested | 6 |
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 | 20.7% | 62 |
| 2 | Brakes | 15.0% | 45 |
| 3 | Other defects | 7.7% | 23 |
| 4 | Lighting & signalling | 4.7% | 14 |
| 5 | Visibility | 4.3% | 13 |
| 6 | Seat belts & restraints | 1.3% | 4 |
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 | 115 | 16.5% |
| 30-60k | 148 | 19.6% |
| 60-90k | 36 | 22.2% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2023 | 100 | 20.0% |
| 2024 | 86 | 19.8% |
| 2025 | 87 | 17.2% |
What to check before buying a 2020 I800
On a 2020 I800, lighting & signalling is what the MOT record says goes wrong most — it appeared in 19.3% of tests. Check these areas before you commit.
- Lighting & signalling (19.3% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Visibility (6.3% 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.
- Tyres (4.0% 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 2020 Hyundai I800s pass their MOT?
81.3% of the 300 2020 Hyundai I800 MOT tests in this dataset passed — a 18.7% fail rate.
What is the most common MOT failure on a 2020 Hyundai I800?
Lighting & signalling, recorded in 19.3% of tests, followed by visibility (6.3%).
Does the 2020 I800 get worse with mileage?
Its MOT fail rate rises from 16.5% in the 0-30k band to 22.2% in the 60-90k band.
Methodology & source. Based on 300 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.