2021 Porsche Taycan — MOT failures & pass rate
814 MOT tests on the 2021 Porsche Taycan are in this dataset, and 90.9% of them passed. Executive cars of a similar age fail at 9.8%, so the 2021 Taycan sits squarely on the average. Failures cluster in tyres, other defects and lighting & signalling.
What the MOT record shows
Tyres dominates the failure mix at 7.4% of all tests — 5.5 points clear of other defects, so it is the first thing to check.
At component level the recurring items are registration plates, tread depth and headlamp aim — registration plates alone was recorded 26 times.
Advisories point at the next bill rather than this one: tyres was flagged on 18.9% of tests without failing them.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 7.4% | 60 |
| 2 | Other defects | 1.8% | 15 |
| 3 | Lighting & signalling | 0.7% | 6 |
| 4 | Seat belts & restraints | 0.5% | 4 |
| 5 | Visibility | 0.4% | 3 |
| 6 | Brakes | 0.4% | 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 | 26 |
| 2 | Tread depth | 11 |
| 3 | Headlamp aim | 5 |
| 4 | SRS malfunction indicator lamp | 4 |
| 5 | Tyre pressure monitoring system | 3 |
| 6 | Hydraulic brake callipers | 1 |
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 | 18.9% | 154 |
| 2 | Other defects | 3.4% | 28 |
| 3 | Visibility | 2.2% | 18 |
| 4 | Road wheels | 0.7% | 6 |
| 5 | Brakes | 0.6% | 5 |
| 6 | Suspension | 0.3% | 2 |
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 | 554 | 9.0% |
| 30-60k | 242 | 9.1% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2024 | 398 | 10.8% |
| 2025 | 404 | 7.7% |
What to check before buying a 2021 Taycan
On a 2021 Taycan, tyres is what the MOT record says goes wrong most — it appeared in 7.4% of tests. Check these areas before you commit.
- Tyres (7.4% 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.
- Other defects (1.8% of tests): Miscellaneous items not in the main categories. Typical repair: varies.
- Lighting & signalling (0.7% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£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 Porsche Taycans pass their MOT?
90.9% of the 814 2021 Porsche Taycan MOT tests in this dataset passed — a 9.1% fail rate.
What is the most common MOT failure on a 2021 Porsche Taycan?
Tyres, recorded in 7.4% of tests, followed by other defects (1.8%).
Does the 2021 Taycan get worse with mileage?
Its MOT fail rate rises from 9.0% in the 0-30k band to 9.1% in the 30-60k band.
Methodology & source. Based on 814 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.