2021 Porsche Taycan 4S 93Kwh — MOT failures & pass rate
Across 2,150 MOT tests analysed for the 2021 Porsche Taycan 4S 93Kwh, the most common recorded failure areas were tyres, lighting & signalling and other defects. Its pass rate of 92.8% was above the average for cars of a similar age (91.2%).
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 5.9% | 128 |
| 2 | Lighting & signalling | 0.8% | 17 |
| 3 | Other defects | 0.7% | 15 |
| 4 | Brakes | 0.4% | 8 |
| 5 | Suspension | 0.3% | 6 |
| 6 | Visibility | 0.3% | 6 |
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 | 31 |
| 2 | Registration plates | 24 |
| 3 | Headlamp aim | 18 |
| 4 | Washers | 5 |
| 5 | Side repeaters | 4 |
| 6 | Ball joint | 4 |
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 | 20.3% | 437 |
| 2 | Other defects | 3.9% | 84 |
| 3 | Visibility | 2.8% | 61 |
| 4 | Brakes | 0.9% | 20 |
| 5 | Suspension | 0.1% | 3 |
| 6 | Road wheels | 0.1% | 3 |
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 | 1,221 | 6.2% |
| 30-60k | 852 | 8.3% |
| 60-90k | 69 | 8.7% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2023 | 50 | 8.0% |
| 2024 | 1,034 | 7.2% |
| 2025 | 1,065 | 7.1% |
What to check before buying a 2021 Taycan 4S 93Kwh
Before buying a 2021 Porsche Taycan 4S 93Kwh, focus on the areas it most often fails on. Tyres accounted for 5.9% of tests for this year.
- Tyres (5.9% 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.
- Lighting & signalling (0.8% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Other defects (0.7% of tests): Miscellaneous items not in the main categories. Typical repair: varies.
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 Porsche Taycan 4S 93Kwhs pass their MOT?
92.8% of the 2,150 2021 Porsche Taycan 4S 93Kwh MOT tests in this dataset passed — a 7.2% fail rate.
What is the most common MOT failure on a 2021 Porsche Taycan 4S 93Kwh?
Tyres, recorded in 5.9% of tests, followed by lighting & signalling (0.8%).
Does the 2021 Taycan 4S 93Kwh get worse with mileage?
Its MOT fail rate rises from 6.2% in the 0-30k band to 8.7% in the 60-90k band.
Methodology & source. Based on 2,150 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.