2018 Maserati Quattroporte — MOT failures & pass rate
Across 392 MOT tests, the 2018 Maserati Quattroporte recorded an 87.2% pass rate. That is 2.0 percentage points worse than executive cars of a similar age, which fail at 10.8%. Failures cluster in tyres, visibility and lighting & signalling.
What the MOT record shows
Tyres dominates the failure mix at 9.4% of all tests — 4.8 points clear of visibility, so it is the first thing to check.
At component level the recurring items are wipers, tread depth and headlamp aim — wipers alone was recorded 23 times.
Mileage matters less than usual here: the 2018 Quattroporte fails 10.4% of the time in the 0-30k band and 14.0% at 60-90k, a spread of only 3.6 points.
Advisories point at the next bill rather than this one: tyres was flagged on 26.3% of tests without failing them.
The trend is worsening — 7.9% of tests failed in 2021 against 11.4% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 9.4% | 37 |
| 2 | Visibility | 4.6% | 18 |
| 3 | Lighting & signalling | 2.8% | 11 |
| 4 | Brakes | 1.3% | 5 |
| 5 | Emissions & environmental | 1.0% | 4 |
| 6 | Body, structure & corrosion | 0.3% | 1 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Wipers | 23 |
| 2 | Tread depth | 21 |
| 3 | Headlamp aim | 13 |
| 4 | Brake pads | 5 |
| 5 | Malfunction indicator lamp | 4 |
| 6 | Headlamp | 2 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Tyres | 26.3% | 103 |
| 2 | Brakes | 9.4% | 37 |
| 3 | Other defects | 4.3% | 17 |
| 4 | Suspension | 3.1% | 12 |
| 5 | Visibility | 1.5% | 6 |
| 6 | Lighting & signalling | 1.3% | 5 |
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 | 163 | 10.4% |
| 30-60k | 170 | 14.7% |
| 60-90k | 50 | 14.0% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 261 | 11.1% |
| Petrol | 131 | 16.0% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 89 | 7.9% |
| 2022 | 85 | 18.8% |
| 2023 | 79 | 15.2% |
| 2024 | 69 | 10.1% |
| 2025 | 70 | 11.4% |
What to check before buying a 2018 Quattroporte
On a 2018 Quattroporte, tyres is what the MOT record says goes wrong most — it appeared in 9.4% of tests. Check these areas before you commit.
- Tyres (9.4% of tests): Usually a quick, known-cost fix, but check tread, age and uneven wear (which can hint at alignment or suspension issues). Typical repair: £50–£120 per tyre.
- Visibility (4.6% 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.
- Lighting & signalling (2.8% 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 2018 Maserati Quattroportes pass their MOT?
87.2% of the 392 2018 Maserati Quattroporte MOT tests in this dataset passed — a 12.8% fail rate.
What is the most common MOT failure on a 2018 Maserati Quattroporte?
Tyres, recorded in 9.4% of tests, followed by visibility (4.6%).
Does the 2018 Quattroporte get worse with mileage?
Its MOT fail rate rises from 10.4% in the 0-30k band to 14.0% in the 60-90k band.
Methodology & source. Based on 392 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.