2005 Maserati Quattroporte — MOT failures & pass rate
Across 471 MOT tests, the 2005 Maserati Quattroporte recorded an 81.7% pass rate. Against executive cars of a similar age (24.1% fail rate), the 2005 Quattroporte comes out 5.8pp better. Failures cluster in lighting & signalling, brakes and visibility.
What the MOT record shows
No single area dominates — lighting & signalling (9.6%) and brakes (8.3%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are headlamp aim, catalyst emissions and tread depth — headlamp aim alone was recorded 38 times.
A 90-120k example is materially riskier than a 0-30k one: 15.4% versus 10.0%.
Advisories point at the next bill rather than this one: suspension was flagged on 20.0% of tests without failing them.
The trend is improving — the fail rate fell from 23.2% in 2021 to 19.2% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 9.6% | 45 |
| 2 | Brakes | 8.3% | 39 |
| 3 | Visibility | 4.5% | 21 |
| 4 | Tyres | 4.5% | 21 |
| 5 | Emissions & environmental | 3.2% | 15 |
| 6 | Suspension | 2.8% | 13 |
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 | 38 |
| 2 | Catalyst emissions | 25 |
| 3 | Tread depth | 22 |
| 4 | Wipers | 19 |
| 5 | Rbt (sp) | 19 |
| 6 | Headlamp | 12 |
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 | 20.0% | 94 |
| 2 | Brakes | 19.5% | 92 |
| 3 | Tyres | 18.5% | 87 |
| 4 | Lighting & signalling | 5.5% | 26 |
| 5 | Emissions & environmental | 3.2% | 15 |
| 6 | Body, structure & corrosion | 3.0% | 14 |
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 | 30 | 10.0% |
| 30-60k | 203 | 16.8% |
| 60-90k | 165 | 21.2% |
| 90-120k | 52 | 15.4% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 125 | 23.2% |
| 2022 | 103 | 18.4% |
| 2023 | 93 | 11.8% |
| 2024 | 77 | 16.9% |
| 2025 | 73 | 19.2% |
What to check before buying a 2005 Quattroporte
On a 2005 Quattroporte, lighting & signalling is what the MOT record says goes wrong most — it appeared in 9.6% of tests. Check these areas before you commit.
- Lighting & signalling (9.6% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (8.3% 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.
- Visibility (4.5% of tests): Wipers, washers, mirrors and screen damage — usually inexpensive, but check for chips in the driver's line of sight. Typical repair: £15–£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 2005 Maserati Quattroportes pass their MOT?
81.7% of the 471 2005 Maserati Quattroporte MOT tests in this dataset passed — a 18.3% fail rate.
What is the most common MOT failure on a 2005 Maserati Quattroporte?
Lighting & signalling, recorded in 9.6% of tests, followed by brakes (8.3%).
Does the 2005 Quattroporte get worse with mileage?
Its MOT fail rate rises from 10.0% in the 0-30k band to 15.4% in the 90-120k band.
Methodology & source. Based on 471 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.