2018 Hymer Ml — MOT failures & pass rate
284 MOT tests on the 2018 Hymer Ml are in this dataset, and 90.1% of them passed. Against all cars of a similar age (11.1% fail rate), the 2018 Ml comes out 1.2pp better. Failures cluster in lighting & signalling, visibility and brakes.
What the MOT record shows
Lighting & signalling dominates the failure mix at 7.8% of all tests — 4.2 points clear of visibility, so it is the first thing to check.
At component level the recurring items are headlamp aim, wipers and service brake performance — headlamp aim alone was recorded 20 times.
Advisories point at the next bill rather than this one: brakes was flagged on 12.0% of tests without failing them.
The trend is worsening — 5.7% of tests failed in 2021 against 12.1% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 7.8% | 22 |
| 2 | Visibility | 3.5% | 10 |
| 3 | Brakes | 2.8% | 8 |
| 4 | Body, structure & corrosion | 1.1% | 3 |
| 5 | Emissions & environmental | 0.7% | 2 |
| 6 | Steering | 0.4% | 1 |
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 | 20 |
| 2 | Wipers | 12 |
| 3 | Service brake performance | 5 |
| 4 | Outline marker lamp | 4 |
| 5 | Stop lamp | 4 |
| 6 | Rbt (sp) | 4 |
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 | 12.0% | 34 |
| 2 | Lighting & signalling | 7.0% | 20 |
| 3 | Visibility | 3.9% | 11 |
| 4 | Tyres | 2.1% | 6 |
| 5 | Emissions & environmental | 1.4% | 4 |
| 6 | Steering | 1.1% | 3 |
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 | 246 | 8.5% |
| 30-60k | 37 | 18.9% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 53 | 5.7% |
| 2022 | 59 | 10.2% |
| 2023 | 55 | 7.3% |
| 2024 | 59 | 13.6% |
| 2025 | 58 | 12.1% |
What to check before buying a 2018 Ml
On a 2018 Ml, lighting & signalling is what the MOT record says goes wrong most — it appeared in 7.8% of tests. Check these areas before you commit.
- Lighting & signalling (7.8% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Visibility (3.5% 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 (2.8% 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 2018 Hymer Mls pass their MOT?
90.1% of the 284 2018 Hymer Ml MOT tests in this dataset passed — a 9.9% fail rate.
What is the most common MOT failure on a 2018 Hymer Ml?
Lighting & signalling, recorded in 7.8% of tests, followed by visibility (3.5%).
Does the 2018 Ml get worse with mileage?
Its MOT fail rate rises from 8.5% in the 0-30k band to 18.9% in the 30-60k band.
Methodology & source. Based on 284 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.