2020 Renault Trafic Sl30 B-Ness+ — MOT failures & pass rate
940 MOT tests on the 2020 Renault Trafic Sl30 B-Ness+ are in this dataset, and 80.7% of them passed. Against all cars of a similar age (9.3% fail rate), the 2020 Trafic Sl30 B-Ness+ comes out 9.9pp worse. Failures cluster in suspension, lighting & signalling and brakes.
What the MOT record shows
No single area dominates — suspension (6.6%) and lighting & signalling (6.4%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are headlamp aim, brake pads and malfunction indicator lamp — headlamp aim alone was recorded 52 times.
A 120-150k example is materially riskier than a 0-30k one: 27.3% versus 10.0%.
Brakes is the most common advisory, noted on 20.2% of tests — work that passed today but is likely due soon.
The trend is improving — the fail rate fell from 22.7% in 2023 to 17.3% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Suspension | 6.6% | 62 |
| 2 | Lighting & signalling | 6.4% | 60 |
| 3 | Brakes | 5.9% | 55 |
| 4 | Tyres | 5.5% | 52 |
| 5 | Visibility | 5.2% | 49 |
| 6 | Emissions & environmental | 3.2% | 30 |
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 | 52 |
| 2 | Brake pads | 44 |
| 3 | Malfunction indicator lamp | 29 |
| 4 | Wipers | 28 |
| 5 | Washers | 23 |
| 6 | Shock absorbers | 21 |
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 | 20.2% | 190 |
| 2 | Tyres | 19.5% | 183 |
| 3 | Suspension | 7.5% | 71 |
| 4 | Other defects | 6.9% | 65 |
| 5 | Visibility | 6.4% | 60 |
| 6 | Lighting & signalling | 5.3% | 50 |
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 | 70 | 10.0% |
| 30-60k | 305 | 19.3% |
| 60-90k | 360 | 19.7% |
| 90-120k | 155 | 20.0% |
| 120-150k | 44 | 27.3% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2023 | 331 | 22.7% |
| 2024 | 306 | 17.6% |
| 2025 | 300 | 17.3% |
What to check before buying a 2020 Trafic Sl30 B-Ness+
The failure pattern for this year is specific enough to inspect against: suspension accounted for 6.6% of tests. Start there.
- Suspension (6.6% 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.
- Lighting & signalling (6.4% 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.
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 Renault Trafic Sl30 B-Ness+s pass their MOT?
80.7% of the 940 2020 Renault Trafic Sl30 B-Ness+ MOT tests in this dataset passed — a 19.3% fail rate.
What is the most common MOT failure on a 2020 Renault Trafic Sl30 B-Ness+?
Suspension, recorded in 6.6% of tests, followed by lighting & signalling (6.4%).
Does the 2020 Trafic Sl30 B-Ness+ get worse with mileage?
Its MOT fail rate rises from 10.0% in the 0-30k band to 27.3% in the 120-150k band.
Methodology & source. Based on 940 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.