2000 Caterham Seven S3 — MOT failures & pass rate
328 MOT tests on the 2000 Caterham Seven S3 are in this dataset, and 92.4% of them passed. Against all cars of a similar age (26.6% fail rate), the 2000 Seven S3 comes out 19.0pp better. Failures cluster in lighting & signalling, emissions & environmental and steering.
What the MOT record shows
No single area dominates — lighting & signalling (4.9%) and emissions & environmental (4.3%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are catalyst emissions, steering rack and headlamp aim — catalyst emissions alone was recorded 11 times.
Advisories point at the next bill rather than this one: suspension was flagged on 8.2% of tests without failing them.
The trend is improving — the fail rate fell from 7.8% in 2021 to 3.7% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 4.9% | 16 |
| 2 | Emissions & environmental | 4.3% | 14 |
| 3 | Steering | 2.1% | 7 |
| 4 | Visibility | 1.8% | 6 |
| 5 | Brakes | 1.2% | 4 |
| 6 | Suspension | 0.9% | 3 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Catalyst emissions | 11 |
| 2 | Steering rack | 6 |
| 3 | Headlamp aim | 6 |
| 4 | Tread depth | 5 |
| 5 | Non catalyst emissions | 5 |
| 6 | Emissions not tested | 4 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Suspension | 8.2% | 27 |
| 2 | Tyres | 7.0% | 23 |
| 3 | Emissions & environmental | 5.5% | 18 |
| 4 | Brakes | 4.9% | 16 |
| 5 | Steering | 3.7% | 12 |
| 6 | Visibility | 3.0% | 10 |
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 | 201 | 10.0% |
| 30-60k | 104 | 3.9% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 77 | 7.8% |
| 2022 | 73 | 12.3% |
| 2023 | 63 | 1.6% |
| 2024 | 61 | 11.5% |
| 2025 | 54 | 3.7% |
What to check before buying a 2000 Seven S3
On a 2000 Seven S3, lighting & signalling is what the MOT record says goes wrong most — it appeared in 4.9% of tests. Check these areas before you commit.
- Lighting & signalling (4.9% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Emissions & environmental (4.3% of tests): More common on older diesels (DPF/EGR) — can be expensive; check for warning lights and smoke. Typical repair: £100–£600.
- Steering (2.1% of tests): Play, leaks or worn track rod ends — affects handling and is a safety item. Typical repair: £150–£500.
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 2000 Caterham Seven S3s pass their MOT?
92.4% of the 328 2000 Caterham Seven S3 MOT tests in this dataset passed — a 7.6% fail rate.
What is the most common MOT failure on a 2000 Caterham Seven S3?
Lighting & signalling, recorded in 4.9% of tests, followed by emissions & environmental (4.3%).
Does the 2000 Seven S3 get worse with mileage?
Its MOT fail rate rises from 10.0% in the 0-30k band to 3.9% in the 30-60k band.
Methodology & source. Based on 328 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.