2018 Renault Koleos — MOT failures & pass rate
Across 5,223 MOT tests, the 2018 Renault Koleos recorded an 89.0% pass rate. All cars of a similar age fail at 11.0%, so the 2018 Koleos sits squarely on the average. Failures cluster in tyres, brakes and lighting & signalling.
What the MOT record shows
No single area dominates — tyres (4.1%) and brakes (3.8%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are brake pads, tread depth and wipers — brake pads alone was recorded 217 times.
Condition tracks the odometer closely. Failures run at 7.4% in the 0-30k band and 18.8% in the 120-150k band, a 11.4-point spread — more than double.
Advisories point at the next bill rather than this one: brakes was flagged on 21.7% of tests without failing them.
The trend is worsening — 8.2% of tests failed in 2021 against 12.4% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 4.1% | 216 |
| 2 | Brakes | 3.8% | 198 |
| 3 | Lighting & signalling | 2.5% | 133 |
| 4 | Visibility | 2.3% | 120 |
| 5 | Suspension | 2.1% | 109 |
| 6 | Steering | 1.1% | 57 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Brake pads | 217 |
| 2 | Tread depth | 143 |
| 3 | Wipers | 129 |
| 4 | Headlamp aim | 79 |
| 5 | Ball joint | 79 |
| 6 | Headlamp | 54 |
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 | 21.7% | 1,135 |
| 2 | Tyres | 21.2% | 1,108 |
| 3 | Other defects | 13.0% | 678 |
| 4 | Suspension | 6.9% | 359 |
| 5 | Visibility | 2.8% | 146 |
| 6 | Steering | 2.4% | 124 |
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 | 1,491 | 7.4% |
| 30-60k | 2,576 | 11.7% |
| 60-90k | 955 | 13.8% |
| 90-120k | 160 | 15.6% |
| 120-150k | 32 | 18.8% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 1,065 | 8.2% |
| 2022 | 1,089 | 11.8% |
| 2023 | 1,051 | 11.3% |
| 2024 | 1,002 | 11.4% |
| 2025 | 1,016 | 12.4% |
What to check before buying a 2018 Koleos
On a 2018 Koleos, tyres is what the MOT record says goes wrong most — it appeared in 4.1% of tests. Check these areas before you commit.
- Tyres (4.1% 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.
- Brakes (3.8% 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.
- Lighting & signalling (2.5% 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 Renault Koleoss pass their MOT?
89.0% of the 5,223 2018 Renault Koleos MOT tests in this dataset passed — a 11.0% fail rate.
What is the most common MOT failure on a 2018 Renault Koleos?
Tyres, recorded in 4.1% of tests, followed by brakes (3.8%).
Does the 2018 Koleos get worse with mileage?
Its MOT fail rate rises from 7.4% in the 0-30k band to 18.8% in the 120-150k band.
Methodology & source. Based on 5,223 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.