2018 Renault Megane — MOT failures & pass rate
Across 11,630 MOT tests analysed for the 2018 Renault Megane, the most common recorded failure areas were lighting & signalling, tyres and visibility. Its pass rate of 85.3% was below the average for small family cars of a similar age (89.6%). Higher-mileage examples failed more often — 16.3% in the 150k+ group versus 10.2% in the 0-30k group.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 6.7% | 775 |
| 2 | Tyres | 5.9% | 692 |
| 3 | Visibility | 5.1% | 598 |
| 4 | Suspension | 4.3% | 498 |
| 5 | Brakes | 2.6% | 302 |
| 6 | Emissions & environmental | 0.9% | 109 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Wipers | 508 |
| 2 | Headlamp | 399 |
| 3 | Headlamp aim | 364 |
| 4 | Tread depth | 290 |
| 5 | Linkage ball joints | 244 |
| 6 | Brake pads | 243 |
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% | 3,035 |
| 2 | Brakes | 16.3% | 1,891 |
| 3 | Suspension | 7.5% | 872 |
| 4 | Other defects | 7.0% | 814 |
| 5 | Visibility | 2.8% | 323 |
| 6 | Lighting & signalling | 2.1% | 244 |
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 | 4,036 | 10.2% |
| 30-60k | 4,883 | 15.2% |
| 60-90k | 1,818 | 20.6% |
| 90-120k | 628 | 21.5% |
| 120-150k | 182 | 20.9% |
| 150k+ | 80 | 16.3% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Petrol | 6,397 | 12.5% |
| Diesel | 5,233 | 17.4% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 2,367 | 13.1% |
| 2022 | 2,382 | 13.5% |
| 2023 | 2,326 | 14.4% |
| 2024 | 2,290 | 15.8% |
| 2025 | 2,265 | 17.0% |
What to check before buying a 2018 Megane
Before buying a 2018 Renault Megane, focus on the areas it most often fails on. Lighting & signalling accounted for 6.7% of tests for this year.
- Lighting & signalling (6.7% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- 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.
- Visibility (5.1% 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.
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 Renault Meganes pass their MOT?
85.3% of the 11,630 2018 Renault Megane MOT tests in this dataset passed — a 14.7% fail rate.
What is the most common MOT failure on a 2018 Renault Megane?
Lighting & signalling, recorded in 6.7% of tests, followed by tyres (5.9%).
Does the 2018 Megane get worse with mileage?
Its MOT fail rate rises from 10.2% in the 0-30k band to 16.3% in the 150k+ band.
Methodology & source. Based on 11,630 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-01. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.