2003 Suzuki Alto — MOT failures & pass rate
Across 3,628 MOT tests, the 2003 Suzuki Alto recorded a 66.9% pass rate. Against city cars of a similar age (29.5% fail rate), the 2003 Alto comes out 3.6pp worse. Failures cluster in brakes, suspension and lighting & signalling.
What the MOT record shows
No single area dominates — brakes (16.4%) and suspension (14.5%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are rigid brake pipes, service brake performance and joints — rigid brake pipes alone was recorded 325 times.
Mileage matters less than usual here: the 2003 Alto fails 27.5% of the time in the 0-30k band and 30.0% at 120-150k, a spread of only 2.5 points.
Brakes is the most common advisory, noted on 44.2% of tests — work that passed today but is likely due soon.
The trend is improving — the fail rate fell from 33.5% in 2021 to 29.0% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Brakes | 16.4% | 595 |
| 2 | Suspension | 14.5% | 527 |
| 3 | Lighting & signalling | 13.8% | 499 |
| 4 | Body, structure & corrosion | 13.5% | 491 |
| 5 | Emissions & environmental | 7.7% | 279 |
| 6 | Tyres | 6.6% | 238 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Rigid brake pipes | 325 |
| 2 | Service brake performance | 311 |
| 3 | Joints | 296 |
| 4 | Service brake imbalance | 246 |
| 5 | Stop lamp | 231 |
| 6 | Ball joint | 215 |
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 | 44.2% | 1,605 |
| 2 | Suspension | 43.1% | 1,565 |
| 3 | Tyres | 26.0% | 943 |
| 4 | Body, structure & corrosion | 20.9% | 758 |
| 5 | Other defects | 12.8% | 466 |
| 6 | Emissions & environmental | 10.6% | 384 |
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 | 444 | 27.5% |
| 30-60k | 1,709 | 31.4% |
| 60-90k | 1,153 | 37.3% |
| 90-120k | 280 | 36.1% |
| 120-150k | 30 | 30.0% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 1,129 | 33.5% |
| 2022 | 869 | 33.6% |
| 2023 | 688 | 31.8% |
| 2024 | 556 | 36.0% |
| 2025 | 386 | 29.0% |
What to check before buying a 2003 Alto
The failure pattern for this year is specific enough to inspect against: brakes accounted for 16.4% of tests. Start there.
- Brakes (16.4% 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.
- Suspension (14.5% 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.
- Lighting & signalling (13.8% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
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 Suzuki Altos pass their MOT?
66.9% of the 3,628 2003 Suzuki Alto MOT tests in this dataset passed — a 33.1% fail rate.
What is the most common MOT failure on a 2003 Suzuki Alto?
Brakes, recorded in 16.4% of tests, followed by suspension (14.5%).
Does the 2003 Alto get worse with mileage?
Its MOT fail rate rises from 27.5% in the 0-30k band to 30.0% in the 120-150k band.
Methodology & source. Based on 3,628 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.