Renault Master Lm35 Business + MOT pass rate & common failures
1,932 MOT tests on the Renault Master Lm35 Business + (2019–2023) give it an 89.3% pass rate. Against all cars of a similar age (7.8% fail rate), the Master Lm35 Business + comes out 2.9pp worse. Its most common failure areas are lighting & signalling, brakes and emissions & environmental.
What the MOT record shows
One area stands out: lighting & signalling, recorded in 8.3% of tests against 3.1% for the next-worst category.
At component level the recurring items are headlamp aim, malfunction indicator lamp and wipers — headlamp aim alone was recorded 118 times.
Condition tracks the odometer closely. Failures run at 6.3% in the 0-30k band and 34.2% in the 150k+ band, a 27.9-point spread — more than double.
Tyres is the most common advisory, noted on 12.2% of tests — work that passed today but is likely due soon.
The trend is worsening — 1.6% of tests failed in 2021 against 13.5% in 2025, the usual pattern as a fleet ages.
How it compares
By model year
Every Master Lm35 Business + model year with a usable sample. Years with their own detailed report are linked.
| Year | Tests | Pass rate | Fail rate | Most common failure |
|---|---|---|---|---|
| 2020 | 610 | 88.7% | 11.3% | Lighting & signalling |
| 2021 | 1,161 | 88.9% | 11.1% | Lighting & signalling |
| 2022 | 143 | 96.5% | 3.5% | Lighting & signalling |
Most common failures (all years)
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 8.3% | 160 |
| 2 | Brakes | 3.1% | 60 |
| 3 | Emissions & environmental | 2.2% | 43 |
| 4 | Suspension | 2.0% | 39 |
| 5 | Visibility | 1.7% | 33 |
| 6 | Tyres | 1.6% | 31 |
| 7 | Seat belts & restraints | 1.1% | 21 |
| 8 | Body, structure & corrosion | 1.0% | 20 |
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 | 118 |
| 2 | Malfunction indicator lamp | 40 |
| 3 | Wipers | 33 |
| 4 | Outline marker lamp | 32 |
| 5 | Headlamp | 32 |
| 6 | Brake pads | 31 |
| 7 | Ball joint | 27 |
| 8 | Registration plate lamp(s) | 22 |
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 | 12.2% | 235 |
| 2 | Brakes | 11.0% | 213 |
| 3 | Lighting & signalling | 4.7% | 91 |
| 4 | Visibility | 4.7% | 91 |
| 5 | Other defects | 2.9% | 56 |
| 6 | Suspension | 2.5% | 48 |
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 | 680 | 6.3% |
| 30-60k | 605 | 8.4% |
| 60-90k | 343 | 12.8% |
| 90-120k | 187 | 20.9% |
| 120-150k | 79 | 21.5% |
| 150k+ | 38 | 34.2% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 62 | 1.6% |
| 2022 | 319 | 5.3% |
| 2023 | 459 | 10.2% |
| 2024 | 542 | 12.6% |
| 2025 | 550 | 13.5% |
What to check before buying a Renault Master Lm35 Business +
- Lighting & signalling (8.3% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (3.1% 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.
- Emissions & environmental (2.2% of tests): More common on older diesels (DPF/EGR) — can be expensive; check for warning lights and smoke. Typical repair: £100–£600.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
What is the MOT pass rate for the Renault Master Lm35 Business +?
89.3% of the 1,932 Renault Master Lm35 Business + MOT tests in this dataset passed, a 10.7% fail rate, across model years 2019–2023.
What does the Renault Master Lm35 Business + most often fail its MOT on?
Lighting & signalling, recorded in 8.3% of tests, then brakes (3.1%).
How much does mileage affect Master Lm35 Business + MOT results?
Fail rates run at 6.3% for cars in the 0-30k band and 34.2% for 150k+, a 27.9-point difference.
Methodology & source. Based on 1,932 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.