PORSCHE CAYMAN (2020)
Running costs, common problems, and reliability data based on 1,421 real MOT tests in 2024.
MOT Pass Rate
97%
Total Tests (2024)
1,421
Avg Mileage
17,106 mi
Est. Annual Cost
£2,037
Is the 2020 PORSCHE CAYMAN reliable?
Excellent reliability. Very few MOT failures. That's 15 points above the national average of 82%. It also outperforms the PORSCHE brand average of 92%.
At 4 years old, 97% of PORSCHE CAYMANs from 2020 passed their MOT first time in 2024. That's based on 1,421 tests across the UK. The average mileage at this age is 17,106 miles.
How does the 2020 PORSCHE CAYMAN compare?
Mileage Analysis
The average 2020 PORSCHE CAYMAN has 17,106 miles on the clock, which is below the expected 29,600 miles for a 4-year-old car. This suggests lighter use than average, which generally means less wear on major components.
Best year to buy a PORSCHE CAYMAN?
The most reliable year is the 2022 model with a 100% MOT pass rate, while the 2006 model has the lowest at 86%. The 2020 sits between the two at 97%.
How much does a 2020 PORSCHE CAYMAN cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
PORSCHE CAYMAN by Year
| Year | Pass Rate | Tests | Avg Mileage |
|---|---|---|---|
| 2022 | 100% | 60 | 10,562 mi |
| 2021 | 97% | 1,230 | 16,318 mi |
| 2020 | 97% | 1,421 | 17,106 mi |
| 2019 | 95% | 2,635 | 23,973 mi |
| 2018 | 96% | 3,611 | 29,634 mi |
| 2017 | 95% | 2,747 | 32,888 mi |
| 2016 | 96% | 2,725 | 30,854 mi |
| 2015 | 96% | 2,774 | 36,438 mi |
| 2014 | 94% | 2,963 | 49,014 mi |
| 2013 | 95% | 2,270 | 50,622 mi |
| 2012 | 96% | 691 | 51,012 mi |
| 2011 | 92% | 1,167 | 54,736 mi |
| 2010 | 90% | 1,201 | 67,244 mi |
| 2009 | 93% | 1,466 | 67,126 mi |
| 2008 | 89% | 2,312 | 74,137 mi |
| 2007 | 88% | 3,100 | 77,221 mi |
| 2006 | 86% | 3,424 | 80,301 mi |
| 2005 | 89% | 361 | 84,339 mi |
Checking a specific PORSCHE CAYMAN?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2020 PORSCHE CAYMAN
The 2020 PORSCHE CAYMAN is a luxury with a 3995cc petrol engine. 1,421 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. It ranks in the top 7% of all 2020 cars for reliability.
With an average of 17,106 miles at 4 years old, PORSCHE CAYMAN owners tend to use this car less than the typical driver.
2020 PORSCHE CAYMAN Fuel Costs
The 3995cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,592 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2020 PORSCHE CAYMAN?
Total estimated annual running cost is £2,037 (£170/month), broken down as £1592 fuel, £190 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 97% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
PORSCHE CAYMAN Reliability Trend
Newer PORSCHE CAYMANs show better MOT pass rates than older ones, with an average improvement of 5 percentage points.
Buying a Used 2020 PORSCHE CAYMAN
At 4 years old, the PORSCHE CAYMAN offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. If you're flexible on year, the 2022 model has the highest pass rate at 100%.
Alternatives to the 2020 PORSCHE CAYMAN
The PORSCHE CAYMAN is actually the most reliable option among similar petrol luxurys from this era. Here are comparable petrol cars with similar engines:
- MERCEDES C (2019) 91% pass rate (-6%) from 52,838 tests
- PORSCHE CAYENNE (2019) 95% pass rate (-2%) from 9,063 tests
- PORSCHE 911 (2018) 96% pass rate (-1%) from 7,623 tests
- AUDI A6 (2020) 94% pass rate (-3%) from 3,470 tests