2007 Daihatsu Sirion — MOT failures & pass rate
The 2007 Daihatsu Sirion passed 76.8% of its 9,253 recorded MOT tests. City cars of a similar age fail 28.1% of the time, so this is 5.0pp better than the group it competes with. Failures cluster in suspension, lighting & signalling and brakes.
What the MOT record shows
No single area dominates — suspension (12.6%) and lighting & signalling (11.5%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are ball joint, headlamp aim and headlamp — ball joint alone was recorded 915 times.
A 150k+ example is materially riskier than a 0-30k one: 37.7% versus 12.7%.
Suspension is the most common advisory, noted on 37.4% of tests — work that passed today but is likely due soon.
The trend is worsening — 20.6% of tests failed in 2021 against 24.1% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Suspension | 12.6% | 1,161 |
| 2 | Lighting & signalling | 11.5% | 1,061 |
| 3 | Brakes | 8.0% | 740 |
| 4 | Visibility | 5.7% | 523 |
| 5 | Tyres | 4.3% | 394 |
| 6 | Body, structure & corrosion | 3.7% | 344 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Ball joint | 915 |
| 2 | Headlamp aim | 525 |
| 3 | Headlamp | 463 |
| 4 | Wipers | 455 |
| 5 | Rigid brake pipes | 406 |
| 6 | Linkage ball joints | 282 |
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 | 37.4% | 3,463 |
| 2 | Brakes | 31.6% | 2,925 |
| 3 | Tyres | 24.9% | 2,301 |
| 4 | Lighting & signalling | 15.1% | 1,398 |
| 5 | Other defects | 15.0% | 1,384 |
| 6 | Body, structure & corrosion | 11.9% | 1,105 |
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 | 593 | 12.7% |
| 30-60k | 2,993 | 19.4% |
| 60-90k | 3,364 | 23.8% |
| 90-120k | 1,733 | 29.0% |
| 120-150k | 446 | 30.7% |
| 150k+ | 122 | 37.7% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 2,081 | 20.6% |
| 2022 | 2,024 | 22.1% |
| 2023 | 1,909 | 23.5% |
| 2024 | 1,739 | 26.1% |
| 2025 | 1,500 | 24.1% |
What to check before buying a 2007 Sirion
The failure pattern for this year is specific enough to inspect against: suspension accounted for 12.6% of tests. Start there.
- Suspension (12.6% 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 (11.5% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (8.0% 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 2007 Daihatsu Sirions pass their MOT?
76.8% of the 9,253 2007 Daihatsu Sirion MOT tests in this dataset passed — a 23.2% fail rate.
What is the most common MOT failure on a 2007 Daihatsu Sirion?
Suspension, recorded in 12.6% of tests, followed by lighting & signalling (11.5%).
Does the 2007 Sirion get worse with mileage?
Its MOT fail rate rises from 12.7% in the 0-30k band to 37.7% in the 150k+ band.
Methodology & source. Based on 9,253 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.