2020 Porsche Taycan — MOT failures & pass rate
The 2020 Porsche Taycan passed 92.1% of its 1,956 recorded MOT tests. Executive cars of a similar age fail 10.1% of the time, so this is 2.2pp better than the group it competes with. Failures cluster in tyres, other defects and brakes.
What the MOT record shows
One area stands out: tyres, recorded in 6.8% of tests against 1.3% for the next-worst category.
At component level the recurring items are registration plates, tread depth and headlamp aim — registration plates alone was recorded 41 times.
Mileage matters less than usual here: the 2020 Taycan fails 7.6% of the time in the 0-30k band and 8.9% at 60-90k, a spread of only 1.3 points.
Tyres is the most common advisory, noted on 17.0% of tests — work that passed today but is likely due soon.
The trend is improving — the fail rate fell from 9.0% in 2023 to 7.0% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 6.8% | 133 |
| 2 | Other defects | 1.3% | 25 |
| 3 | Brakes | 0.5% | 9 |
| 4 | Lighting & signalling | 0.3% | 6 |
| 5 | Visibility | 0.3% | 6 |
| 6 | Road wheels | 0.3% | 5 |
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 | 41 |
| 2 | Tread depth | 23 |
| 3 | Headlamp aim | 6 |
| 4 | Tyre pressure monitoring system | 5 |
| 5 | Washers | 3 |
| 6 | SRS malfunction indicator lamp | 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 | 17.0% | 333 |
| 2 | Other defects | 3.9% | 77 |
| 3 | Visibility | 2.6% | 50 |
| 4 | Brakes | 2.0% | 40 |
| 5 | Road wheels | 0.5% | 10 |
| 6 | Lighting & signalling | 0.3% | 5 |
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 | 1,302 | 7.6% |
| 30-60k | 606 | 8.4% |
| 60-90k | 45 | 8.9% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2023 | 644 | 9.0% |
| 2024 | 655 | 7.6% |
| 2025 | 655 | 7.0% |
What to check before buying a 2020 Taycan
The failure pattern for this year is specific enough to inspect against: tyres accounted for 6.8% of tests. Start there.
- Tyres (6.8% 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.
- Other defects (1.3% of tests): Miscellaneous items not in the main categories. Typical repair: varies.
- Brakes (0.5% 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 2020 Porsche Taycans pass their MOT?
92.1% of the 1,956 2020 Porsche Taycan MOT tests in this dataset passed — a 7.9% fail rate.
What is the most common MOT failure on a 2020 Porsche Taycan?
Tyres, recorded in 6.8% of tests, followed by other defects (1.3%).
Does the 2020 Taycan get worse with mileage?
Its MOT fail rate rises from 7.6% in the 0-30k band to 8.9% in the 60-90k band.
Methodology & source. Based on 1,956 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.