2021 Renault Kangoo Ll21 B-Ness Energy — MOT failures & pass rate
Across 500 MOT tests analysed for the 2021 Renault Kangoo Ll21 B-Ness Energy, the most common recorded failure areas were lighting & signalling, tyres and visibility. Its pass rate of 79.4% was below the average for cars of a similar age (91.2%). Higher-mileage examples failed more often — 25.0% in the 90-120k group versus 16.2% in the 0-30k group.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 16.6% | 83 |
| 2 | Tyres | 7.2% | 36 |
| 3 | Visibility | 5.8% | 29 |
| 4 | Brakes | 4.4% | 22 |
| 5 | Emissions & environmental | 3.0% | 15 |
| 6 | Seat belts & restraints | 1.0% | 5 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Stop lamp | 55 |
| 2 | Wipers | 29 |
| 3 | Registration plate lamp(s) | 27 |
| 4 | Headlamp aim | 22 |
| 5 | Position lamp | 21 |
| 6 | Brake pads | 15 |
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 | 24.6% | 123 |
| 2 | Tyres | 23.0% | 115 |
| 3 | Visibility | 10.8% | 54 |
| 4 | Lighting & signalling | 10.8% | 54 |
| 5 | Other defects | 6.8% | 34 |
| 6 | Road wheels | 6.4% | 32 |
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 | 142 | 16.2% |
| 30-60k | 202 | 19.8% |
| 60-90k | 117 | 26.5% |
| 90-120k | 32 | 25.0% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2024 | 236 | 19.5% |
| 2025 | 254 | 22.1% |
What to check before buying a 2021 Kangoo Ll21 B-Ness Energy
Before buying a 2021 Renault Kangoo Ll21 B-Ness Energy, focus on the areas it most often fails on. Lighting & signalling accounted for 16.6% of tests for this year.
- Lighting & signalling (16.6% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Tyres (7.2% 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 (5.8% 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 2021 Renault Kangoo Ll21 B-Ness Energys pass their MOT?
79.4% of the 500 2021 Renault Kangoo Ll21 B-Ness Energy MOT tests in this dataset passed — a 20.6% fail rate.
What is the most common MOT failure on a 2021 Renault Kangoo Ll21 B-Ness Energy?
Lighting & signalling, recorded in 16.6% of tests, followed by tyres (7.2%).
Does the 2021 Kangoo Ll21 B-Ness Energy get worse with mileage?
Its MOT fail rate rises from 16.2% in the 0-30k band to 25.0% in the 90-120k band.
Methodology & source. Based on 500 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-01. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.