2018 Ds Ds7 C-Back Pfrmnc Ln B- S/S — MOT failures & pass rate
Across 930 MOT tests analysed for the 2018 Ds Ds7 C-Back Pfrmnc Ln B- S/S, the most common recorded failure areas were tyres, lighting & signalling and suspension. Its pass rate of 85.0% was below the average for cars of a similar age (89.0%).
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 5.4% | 50 |
| 2 | Lighting & signalling | 5.1% | 47 |
| 3 | Suspension | 4.0% | 37 |
| 4 | Brakes | 2.8% | 26 |
| 5 | Visibility | 2.8% | 26 |
| 6 | Body, structure & corrosion | 1.5% | 14 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Tread depth | 59 |
| 2 | Pins and bushes | 47 |
| 3 | Brake pads | 27 |
| 4 | Wipers | 22 |
| 5 | Position lamp | 17 |
| 6 | Headlamp aim | 10 |
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 | 23.1% | 215 |
| 2 | Brakes | 18.8% | 175 |
| 3 | Other defects | 5.7% | 53 |
| 4 | Body, structure & corrosion | 4.8% | 45 |
| 5 | Emissions & environmental | 2.5% | 23 |
| 6 | Visibility | 2.5% | 23 |
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 | 220 | 10.9% |
| 30-60k | 492 | 15.7% |
| 60-90k | 182 | 18.7% |
| 90-120k | 33 | 15.2% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 173 | 11.0% |
| 2022 | 181 | 14.4% |
| 2023 | 194 | 14.9% |
| 2024 | 190 | 16.8% |
| 2025 | 192 | 17.7% |
What to check before buying a 2018 Ds7 C-Back Pfrmnc Ln B- S/S
Before buying a 2018 Ds Ds7 C-Back Pfrmnc Ln B- S/S, focus on the areas it most often fails on. Tyres accounted for 5.4% of tests for this year.
- Tyres (5.4% 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.
- Lighting & signalling (5.1% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (4.0% 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 Ds Ds7 C-Back Pfrmnc Ln B- S/Ss pass their MOT?
85.0% of the 930 2018 Ds Ds7 C-Back Pfrmnc Ln B- S/S MOT tests in this dataset passed — a 15.0% fail rate.
What is the most common MOT failure on a 2018 Ds Ds7 C-Back Pfrmnc Ln B- S/S?
Tyres, recorded in 5.4% of tests, followed by lighting & signalling (5.1%).
Does the 2018 Ds7 C-Back Pfrmnc Ln B- S/S get worse with mileage?
Its MOT fail rate rises from 10.9% in the 0-30k band to 15.2% in the 90-120k band.
Methodology & source. Based on 930 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.