2021 Peugeot Expert S L1 — MOT failures & pass rate
Across 1,334 MOT tests analysed for the 2021 Peugeot Expert S L1, the most common recorded failure areas were lighting & signalling, visibility and brakes. Its pass rate of 96.5% was above the average for cars of a similar age (91.5%).
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 3.1% | 41 |
| 2 | Visibility | 1.7% | 23 |
| 3 | Brakes | 1.4% | 18 |
| 4 | Emissions & environmental | 0.7% | 9 |
| 5 | Tyres | 0.4% | 5 |
| 6 | Seat belts & restraints | 0.1% | 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 | 21 |
| 2 | Brake pads | 14 |
| 3 | Headlamp aim | 12 |
| 4 | Headlamp | 11 |
| 5 | Registration plate lamp(s) | 11 |
| 6 | Stop lamp | 8 |
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 | 6.5% | 86 |
| 2 | Brakes | 3.6% | 48 |
| 3 | Emissions & environmental | 1.8% | 24 |
| 4 | Other defects | 1.7% | 22 |
| 5 | Body, structure & corrosion | 1.2% | 16 |
| 6 | Visibility | 1.2% | 16 |
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 | 668 | 3.4% |
| 30-60k | 558 | 2.9% |
| 60-90k | 91 | 7.7% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2023 | 172 | 1.7% |
| 2024 | 585 | 3.6% |
| 2025 | 572 | 3.9% |
What to check before buying a 2021 Expert S L1
Before buying a 2021 Peugeot Expert S L1, focus on the areas it most often fails on. Lighting & signalling accounted for 3.1% of tests for this year.
- Lighting & signalling (3.1% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Visibility (1.7% 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.
- Brakes (1.4% 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.
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 Peugeot Expert S L1s pass their MOT?
96.5% of the 1,334 2021 Peugeot Expert S L1 MOT tests in this dataset passed — a 3.5% fail rate.
What is the most common MOT failure on a 2021 Peugeot Expert S L1?
Lighting & signalling, recorded in 3.1% of tests, followed by visibility (1.7%).
Does the 2021 Expert S L1 get worse with mileage?
Its MOT fail rate rises from 3.4% in the 0-30k band to 7.7% in the 60-90k band.
Methodology & source. Based on 1,334 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.