2003 Mitsubishi Lancer — MOT failures & pass rate
1,353 MOT tests on the 2003 Mitsubishi Lancer are in this dataset, and 89.2% of them passed. Small family cars of a similar age fail 28.1% of the time, so this is 17.3pp better than the group it competes with. Failures cluster in lighting & signalling, emissions & environmental and suspension.
What the MOT record shows
No single area dominates — lighting & signalling (6.8%) and emissions & environmental (4.1%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are catalyst emissions, headlamp aim and component mounting prescribed areas — catalyst emissions alone was recorded 97 times.
Mileage is the strongest signal on the record: 3.0% of 0-30k cars fail, rising to 26.3% once past 120-150k — 8.7× the risk.
Advisories point at the next bill rather than this one: brakes was flagged on 13.1% of tests without failing them.
The trend is improving — the fail rate fell from 14.2% in 2021 to 8.1% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 6.8% | 92 |
| 2 | Emissions & environmental | 4.1% | 55 |
| 3 | Suspension | 3.4% | 46 |
| 4 | Brakes | 3.0% | 40 |
| 5 | Visibility | 2.3% | 31 |
| 6 | Body, structure & corrosion | 2.1% | 28 |
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 | 97 |
| 2 | Headlamp aim | 35 |
| 3 | Component mounting prescribed areas | 33 |
| 4 | Rear fog lamp | 32 |
| 5 | Position lamp | 28 |
| 6 | Washers | 23 |
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 | 13.1% | 177 |
| 2 | Suspension | 10.5% | 142 |
| 3 | Tyres | 7.2% | 98 |
| 4 | Body, structure & corrosion | 5.8% | 79 |
| 5 | Steering | 4.1% | 55 |
| 6 | Other defects | 3.8% | 52 |
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 | 66 | 3.0% |
| 30-60k | 229 | 5.7% |
| 60-90k | 594 | 9.9% |
| 90-120k | 351 | 13.1% |
| 120-150k | 95 | 26.3% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 295 | 14.2% |
| 2022 | 283 | 10.9% |
| 2023 | 273 | 11.0% |
| 2024 | 266 | 9.0% |
| 2025 | 236 | 8.1% |
What to check before buying a 2003 Lancer
On a 2003 Lancer, lighting & signalling is what the MOT record says goes wrong most — it appeared in 6.8% of tests. Check these areas before you commit.
- Lighting & signalling (6.8% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Emissions & environmental (4.1% of tests): More common on older diesels (DPF/EGR) — can be expensive; check for warning lights and smoke. Typical repair: £100–£600.
- Suspension (3.4% 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 2003 Mitsubishi Lancers pass their MOT?
89.2% of the 1,353 2003 Mitsubishi Lancer MOT tests in this dataset passed — a 10.8% fail rate.
What is the most common MOT failure on a 2003 Mitsubishi Lancer?
Lighting & signalling, recorded in 6.8% of tests, followed by emissions & environmental (4.1%).
Does the 2003 Lancer get worse with mileage?
Its MOT fail rate rises from 3.0% in the 0-30k band to 26.3% in the 120-150k band.
Methodology & source. Based on 1,353 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.