2003 Vauxhall Omega — MOT failures & pass rate
2,602 MOT tests on the 2003 Vauxhall Omega are in this dataset, and 76.0% of them passed. Executive cars of a similar age fail at 24.4%, so the 2003 Omega sits squarely on the average. Failures cluster in lighting & signalling, suspension and brakes.
What the MOT record shows
No single area dominates — lighting & signalling (11.3%) and suspension (10.7%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are headlamp aim, component mounting prescribed areas and rigid brake pipes — headlamp aim alone was recorded 191 times.
Mileage is the strongest signal on the record: 9.7% of 0-30k cars fail, rising to 29.6% once past 150k — 3.1× the risk.
Advisories point at the next bill rather than this one: brakes was flagged on 39.4% of tests without failing them.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 11.3% | 295 |
| 2 | Suspension | 10.7% | 278 |
| 3 | Brakes | 7.4% | 193 |
| 4 | Emissions & environmental | 6.9% | 179 |
| 5 | Body, structure & corrosion | 6.0% | 157 |
| 6 | Tyres | 5.5% | 142 |
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 | 191 |
| 2 | Component mounting prescribed areas | 184 |
| 3 | Rigid brake pipes | 179 |
| 4 | Headlamp | 96 |
| 5 | Catalyst emissions | 95 |
| 6 | Exhaust system | 90 |
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 | 39.4% | 1,025 |
| 2 | Suspension | 33.7% | 876 |
| 3 | Tyres | 25.1% | 653 |
| 4 | Emissions & environmental | 19.8% | 515 |
| 5 | Body, structure & corrosion | 16.2% | 421 |
| 6 | Lighting & signalling | 14.5% | 378 |
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 | 31 | 9.7% |
| 30-60k | 318 | 18.9% |
| 60-90k | 777 | 24.1% |
| 90-120k | 776 | 23.4% |
| 120-150k | 442 | 26.2% |
| 150k+ | 257 | 29.6% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Petrol | 2,376 | 23.6% |
| Diesel | 219 | 28.3% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 755 | 24.6% |
| 2022 | 623 | 23.6% |
| 2023 | 498 | 23.3% |
| 2024 | 406 | 24.6% |
| 2025 | 320 | 23.8% |
What to check before buying a 2003 Omega
On a 2003 Omega, lighting & signalling is what the MOT record says goes wrong most — it appeared in 11.3% of tests. Check these areas before you commit.
- Lighting & signalling (11.3% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (10.7% 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.
- Brakes (7.4% 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 2003 Vauxhall Omegas pass their MOT?
76.0% of the 2,602 2003 Vauxhall Omega MOT tests in this dataset passed — a 24.0% fail rate.
What is the most common MOT failure on a 2003 Vauxhall Omega?
Lighting & signalling, recorded in 11.3% of tests, followed by suspension (10.7%).
Does the 2003 Omega get worse with mileage?
Its MOT fail rate rises from 9.7% in the 0-30k band to 29.6% in the 150k+ band.
Methodology & source. Based on 2,602 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.