2018 Chausson Unclassified — MOT failures & pass rate
Across 642 MOT tests analysed for the 2018 Chausson Unclassified, the most common recorded failure areas were lighting & signalling, visibility and brakes. Its pass rate of 93.0% was above the average for cars of a similar age (89.1%).
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 11.1% | 71 |
| 2 | Visibility | 2.2% | 14 |
| 3 | Brakes | 1.6% | 10 |
| 4 | Suspension | 0.6% | 4 |
| 5 | Tyres | 0.3% | 2 |
| 6 | Other defects | 0.2% | 1 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Stop lamp | 24 |
| 2 | Rear fog lamp | 22 |
| 3 | Outline marker lamp | 17 |
| 4 | Wipers | 16 |
| 5 | Headlamp aim | 10 |
| 6 | Position lamp | 9 |
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 | 8.3% | 53 |
| 2 | Lighting & signalling | 4.0% | 26 |
| 3 | Brakes | 3.7% | 24 |
| 4 | Visibility | 1.9% | 12 |
| 5 | Suspension | 1.7% | 11 |
| 6 | Other defects | 1.1% | 7 |
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 | 565 | 4.8% |
| 30-60k | 74 | 23.0% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 140 | 6.4% |
| 2022 | 135 | 7.4% |
| 2023 | 126 | 3.2% |
| 2024 | 116 | 6.9% |
| 2025 | 125 | 11.2% |
What to check before buying a 2018 Unclassified
Before buying a 2018 Chausson Unclassified, focus on the areas it most often fails on. Lighting & signalling accounted for 11.1% of tests for this year.
- Lighting & signalling (11.1% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Visibility (2.2% 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 (1.6% 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 Chausson Unclassifieds pass their MOT?
93.0% of the 642 2018 Chausson Unclassified MOT tests in this dataset passed — a 7.0% fail rate.
What is the most common MOT failure on a 2018 Chausson Unclassified?
Lighting & signalling, recorded in 11.1% of tests, followed by visibility (2.2%).
Does the 2018 Unclassified get worse with mileage?
Its MOT fail rate rises from 4.8% in the 0-30k band to 23.0% in the 30-60k band.
Methodology & source. Based on 642 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.