2003 Toyota Corolla — MOT failures & pass rate
The 2003 Toyota Corolla passed 74.5% of its 42,688 recorded MOT tests. Small family cars of a similar age fail 28.1% of the time, so this is 2.6pp better than the group it competes with. Failures cluster in lighting & signalling, brakes and suspension.
What the MOT record shows
Lighting & signalling dominates the failure mix at 18.3% of all tests — 5.1 points clear of brakes, so it is the first thing to check.
At component level the recurring items are headlamp aim, headlamp and wipers — headlamp aim alone was recorded 4,507 times.
Mileage is the strongest signal on the record: 12.3% of 0-30k cars fail, rising to 31.9% once past 150k — 2.6× the risk.
Split by fuel, diesel examples fail 1.7pp more often than petrol ones (27.2% vs 25.4%) — worth weighing if you have a choice.
Advisories point at the next bill rather than this one: brakes was flagged on 38.8% of tests without failing them.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 18.3% | 7,792 |
| 2 | Brakes | 13.1% | 5,600 |
| 3 | Suspension | 7.8% | 3,344 |
| 4 | Visibility | 6.6% | 2,821 |
| 5 | Emissions & environmental | 5.0% | 2,115 |
| 6 | Body, structure & corrosion | 4.9% | 2,084 |
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 | 4,507 |
| 2 | Headlamp | 4,150 |
| 3 | Wipers | 2,291 |
| 4 | Service brake performance | 2,232 |
| 5 | Position lamp | 1,807 |
| 6 | Brake pads | 1,589 |
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 | 38.8% | 16,565 |
| 2 | Suspension | 33.1% | 14,122 |
| 3 | Tyres | 26.8% | 11,419 |
| 4 | Lighting & signalling | 23.3% | 9,923 |
| 5 | Other defects | 17.4% | 7,420 |
| 6 | Emissions & environmental | 14.4% | 6,164 |
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 | 457 | 12.3% |
| 30-60k | 4,474 | 17.8% |
| 60-90k | 11,150 | 22.1% |
| 90-120k | 13,765 | 27.1% |
| 120-150k | 8,369 | 29.0% |
| 150k+ | 4,455 | 31.9% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Petrol | 40,291 | 25.4% |
| Diesel | 2,393 | 27.2% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 11,664 | 25.3% |
| 2022 | 9,828 | 24.6% |
| 2023 | 8,459 | 25.8% |
| 2024 | 7,034 | 26.5% |
| 2025 | 5,703 | 25.9% |
What to check before buying a 2003 Corolla
On a 2003 Corolla, lighting & signalling is what the MOT record says goes wrong most — it appeared in 18.3% of tests. Check these areas before you commit.
- Lighting & signalling (18.3% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (13.1% 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.
- Suspension (7.8% 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 Toyota Corollas pass their MOT?
74.5% of the 42,688 2003 Toyota Corolla MOT tests in this dataset passed — a 25.5% fail rate.
What is the most common MOT failure on a 2003 Toyota Corolla?
Lighting & signalling, recorded in 18.3% of tests, followed by brakes (13.1%).
Does the 2003 Corolla get worse with mileage?
Its MOT fail rate rises from 12.3% in the 0-30k band to 31.9% in the 150k+ band.
Methodology & source. Based on 42,688 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.