2017 Lexus Ct — MOT failures & pass rate
The 2017 Lexus Ct passed 93.4% of its 15,805 recorded MOT tests. Small family cars of a similar age fail 11.9% of the time, so this is 5.4pp better than the group it competes with. Failures cluster in tyres, visibility and lighting & signalling.
What the MOT record shows
No single area dominates — tyres (4.2%) and visibility (2.9%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are wipers, tread depth and headlamp aim — wipers alone was recorded 482 times.
Mileage matters less than usual here: the 2017 Ct fails 3.1% of the time in the 0-30k band and 5.2% at 150k+, a spread of only 2.1 points.
Tyres is the most common advisory, noted on 22.0% of tests — work that passed today but is likely due soon.
The trend is worsening — 5.1% of tests failed in 2021 against 8.3% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 4.2% | 660 |
| 2 | Visibility | 2.9% | 462 |
| 3 | Lighting & signalling | 2.8% | 436 |
| 4 | Brakes | 1.6% | 248 |
| 5 | Body, structure & corrosion | 0.3% | 51 |
| 6 | Suspension | 0.3% | 43 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Wipers | 482 |
| 2 | Tread depth | 329 |
| 3 | Headlamp aim | 241 |
| 4 | Brake pads | 199 |
| 5 | Headlamp | 183 |
| 6 | Tyre pressure monitoring system | 98 |
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 | 22.0% | 3,475 |
| 2 | Brakes | 9.2% | 1,461 |
| 3 | Other defects | 4.9% | 777 |
| 4 | Visibility | 3.0% | 472 |
| 5 | Suspension | 2.1% | 331 |
| 6 | Road wheels | 0.6% | 94 |
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 | 4,711 | 3.1% |
| 30-60k | 7,141 | 7.0% |
| 60-90k | 2,633 | 9.8% |
| 90-120k | 856 | 11.9% |
| 120-150k | 271 | 9.2% |
| 150k+ | 193 | 5.2% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 3,099 | 5.1% |
| 2022 | 3,136 | 5.1% |
| 2023 | 3,180 | 6.5% |
| 2024 | 3,164 | 7.9% |
| 2025 | 3,226 | 8.3% |
What to check before buying a 2017 Ct
The failure pattern for this year is specific enough to inspect against: tyres accounted for 4.2% of tests. Start there.
- Tyres (4.2% 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 (2.9% 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 2017 Lexus Cts pass their MOT?
93.4% of the 15,805 2017 Lexus Ct MOT tests in this dataset passed — a 6.6% fail rate.
What is the most common MOT failure on a 2017 Lexus Ct?
Tyres, recorded in 4.2% of tests, followed by visibility (2.9%).
Does the 2017 Ct get worse with mileage?
Its MOT fail rate rises from 3.1% in the 0-30k band to 5.2% in the 150k+ band.
Methodology & source. Based on 15,805 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.