2018 Renault Grand Scenic — MOT failures & pass rate
Across 4,049 MOT tests analysed for the 2018 Renault Grand Scenic, the most common recorded failure areas were lighting & signalling, tyres and suspension. Its pass rate of 82.6% was below the average for cars of a similar age (89.1%). Higher-mileage examples failed more often — 23.1% in the 150k+ group versus 12.9% in the 0-30k group.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 7.8% | 316 |
| 2 | Tyres | 7.8% | 315 |
| 3 | Suspension | 5.9% | 240 |
| 4 | Brakes | 3.2% | 128 |
| 5 | Visibility | 2.5% | 99 |
| 6 | Emissions & environmental | 1.5% | 59 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Headlamp | 175 |
| 2 | Brake pads | 118 |
| 3 | Stop lamp | 109 |
| 4 | Tread depth | 95 |
| 5 | Linkage ball joints | 87 |
| 6 | Washers | 75 |
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 | 28.1% | 1,137 |
| 2 | Brakes | 18.1% | 735 |
| 3 | Other defects | 10.8% | 438 |
| 4 | Suspension | 9.1% | 369 |
| 5 | Road wheels | 2.7% | 110 |
| 6 | Visibility | 2.7% | 108 |
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 | 1,150 | 12.9% |
| 30-60k | 1,889 | 18.9% |
| 60-90k | 680 | 20.2% |
| 90-120k | 218 | 18.4% |
| 120-150k | 72 | 18.1% |
| 150k+ | 39 | 23.1% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 3,345 | 17.5% |
| Petrol | 694 | 16.3% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 838 | 16.0% |
| 2022 | 807 | 14.9% |
| 2023 | 803 | 16.8% |
| 2024 | 802 | 19.2% |
| 2025 | 799 | 20.2% |
What to check before buying a 2018 Grand Scenic
Before buying a 2018 Renault Grand Scenic, focus on the areas it most often fails on. Lighting & signalling accounted for 7.8% of tests for this year.
- 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.
- Tyres (7.8% 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.
- Suspension (5.9% of tests): Worn drop links, bushes, springs or shocks — listen for knocks over bumps and check for uneven tyre wear. Typical repair: £150–£450 per corner.
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 Grand Scenics pass their MOT?
82.6% of the 4,049 2018 Renault Grand Scenic MOT tests in this dataset passed — a 17.4% fail rate.
What is the most common MOT failure on a 2018 Renault Grand Scenic?
Lighting & signalling, recorded in 7.8% of tests, followed by tyres (7.8%).
Does the 2018 Grand Scenic get worse with mileage?
Its MOT fail rate rises from 12.9% in the 0-30k band to 23.1% in the 150k+ band.
Methodology & source. Based on 4,049 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.