2020 Porsche Taycan S — MOT failures & pass rate
Across 1,173 MOT tests, the 2020 Porsche Taycan S recorded a 92.2% pass rate. That is 1.6 percentage points better than all cars of a similar age, which fail at 9.4%. Failures cluster in tyres, brakes and other defects.
What the MOT record shows
One area stands out: tyres, recorded in 6.4% of tests against 0.9% for the next-worst category.
At component level the recurring items are registration plates, tread depth and electronic parking brake — registration plates alone was recorded 18 times.
Tyres is the most common advisory, noted on 14.5% of tests — work that passed today but is likely due soon.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 6.4% | 75 |
| 2 | Brakes | 0.9% | 11 |
| 3 | Other defects | 0.9% | 10 |
| 4 | Lighting & signalling | 0.5% | 6 |
| 5 | Visibility | 0.3% | 4 |
| 6 | Suspension | 0.3% | 3 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Registration plates | 18 |
| 2 | Tread depth | 11 |
| 3 | Electronic parking brake | 5 |
| 4 | Tyre pressure monitoring system | 5 |
| 5 | Headlamp aim | 4 |
| 6 | Ball joint | 3 |
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 | 14.5% | 170 |
| 2 | Other defects | 3.7% | 43 |
| 3 | Visibility | 1.4% | 16 |
| 4 | Brakes | 0.7% | 8 |
| 5 | Road wheels | 0.4% | 5 |
| 6 | Suspension | 0.3% | 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 | 842 | 7.2% |
| 30-60k | 309 | 8.7% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2023 | 366 | 7.1% |
| 2024 | 395 | 8.6% |
| 2025 | 411 | 7.8% |
What to check before buying a 2020 Taycan S
The failure pattern for this year is specific enough to inspect against: tyres accounted for 6.4% of tests. Start there.
- Tyres (6.4% 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.
- Brakes (0.9% 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.
- Other defects (0.9% 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 2020 Porsche Taycan Ss pass their MOT?
92.2% of the 1,173 2020 Porsche Taycan S MOT tests in this dataset passed — a 7.8% fail rate.
What is the most common MOT failure on a 2020 Porsche Taycan S?
Tyres, recorded in 6.4% of tests, followed by brakes (0.9%).
Does the 2020 Taycan S get worse with mileage?
Its MOT fail rate rises from 7.2% in the 0-30k band to 8.7% in the 30-60k band.
Methodology & source. Based on 1,173 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.