2021 Volkswagen Id4 1St — MOT failures & pass rate
Across 5,140 MOT tests analysed for the 2021 Volkswagen Id4 1St, the most common recorded failure areas were tyres, suspension and visibility. Its pass rate of 89.3% was below the average for cars of a similar age (91.3%).
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 8.9% | 457 |
| 2 | Suspension | 1.2% | 61 |
| 3 | Visibility | 1.2% | 60 |
| 4 | Lighting & signalling | 1.0% | 52 |
| 5 | Brakes | 0.3% | 15 |
| 6 | Seat belts & restraints | 0.2% | 12 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Tread depth | 94 |
| 2 | Wipers | 54 |
| 3 | Headlamp aim | 43 |
| 4 | Linkage ball joints | 31 |
| 5 | Shock absorbers | 24 |
| 6 | Washers | 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 | Tyres | 26.0% | 1,338 |
| 2 | Other defects | 5.5% | 280 |
| 3 | Suspension | 3.5% | 178 |
| 4 | Visibility | 2.7% | 138 |
| 5 | Brakes | 1.9% | 96 |
| 6 | Lighting & signalling | 0.4% | 18 |
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 | 1,688 | 9.7% |
| 30-60k | 2,650 | 11.0% |
| 60-90k | 636 | 11.8% |
| 90-120k | 123 | 13.8% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2022 | 52 | 7.7% |
| 2023 | 127 | 3.9% |
| 2024 | 2,460 | 11.6% |
| 2025 | 2,499 | 10.2% |
What to check before buying a 2021 Id4 1St
Before buying a 2021 Volkswagen Id4 1St, focus on the areas it most often fails on. Tyres accounted for 8.9% of tests for this year.
- Tyres (8.9% 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.
- Suspension (1.2% of tests): Worn drop links, bushes, springs or shocks — listen for knocks over bumps and check for uneven tyre wear. Typical repair: £150–£450 per corner.
- Visibility (1.2% 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 Volkswagen Id4 1Sts pass their MOT?
89.3% of the 5,140 2021 Volkswagen Id4 1St MOT tests in this dataset passed — a 10.7% fail rate.
What is the most common MOT failure on a 2021 Volkswagen Id4 1St?
Tyres, recorded in 8.9% of tests, followed by suspension (1.2%).
Does the 2021 Id4 1St get worse with mileage?
Its MOT fail rate rises from 9.7% in the 0-30k band to 13.8% in the 90-120k band.
Methodology & source. Based on 5,140 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.