PORSCHE CAYENNE (2020)
Running costs, reliability data, and common problems from 7,136 real MOT tests.
Annual Cost
£2,042
£170/month
MOT Pass Rate
96%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 30-42
2982cc Petrol
Great Choice
96% pass rate, £2042/year to run. 14 points above average.
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Annual Running Costs
~30 mpg
Flat rate (post-2017)
Low estimate due to excellent reliability
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.
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Reliability Verdict
Excellent reliability. Very few MOT failures. That's 14 points above the national average of 82%. It also outperforms the PORSCHE brand average of 92%.
At 6 years old, 96% of PORSCHE CAYENNEs from 2020 passed their MOT first time in 2026. That's based on 7,136 tests across the UK. The average mileage at this age is 34,631 miles.
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How Does It Compare?
Mileage Analysis
34,631
Average miles
44,400
Expected for age
The average 2020 PORSCHE CAYENNE has 34,631 miles on the clock, which is below the expected 44,400 miles for a 6-year-old car. This suggests lighter use than average, which generally means less wear on major components.
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PORSCHE CAYENNE by Year
| Year | Pass Rate | Tests | Avg Mileage | |
|---|---|---|---|---|
| 2022 | 96% | 83 | 24,282 mi | |
| 2021 | 95% | 4,115 | 27,090 mi | |
| 2020 | 96% | 7,136 | 34,631 mi | |
| 2019 | 95% | 9,063 | 40,685 mi | |
| 2018 | 93% | 5,310 | 51,571 mi | |
| 2017 | 92% | 4,856 | 65,047 mi | |
| 2016 | 92% | 7,333 | 71,856 mi | |
| 2015 | 93% | 6,258 | 79,263 mi | |
| 2014 | 91% | 5,626 | 86,652 mi | |
| 2013 | 91% | 6,261 | 96,482 mi | |
| 2012 | 89% | 5,233 | 104,317 mi | |
| 2011 | 90% | 3,069 | 107,653 mi | |
| 2010 | 89% | 2,126 | 113,736 mi | |
| 2009 | 87% | 1,955 | 119,837 mi | |
| 2008 | 86% | 1,384 | 109,907 mi | |
| 2007 | 83% | 1,790 | 115,755 mi | |
| 2006 | 86% | 2,242 | 118,992 mi | |
| 2005 | 84% | 2,951 | 124,592 mi | |
| 2004 | 84% | 2,598 | 125,338 mi | |
| 2003 | 84% | 1,257 | 121,522 mi |
Similar Cars to Consider
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About the 2020 PORSCHE CAYENNE
The 2020 PORSCHE CAYENNE is a luxury with a 2982cc petrol engine. 7,136 of these vehicles were MOT tested in 2026, making it a reasonably common sight on UK roads. It ranks in the top 12% of all 2020 cars for reliability.
With an average of 34,631 miles at 6 years old, PORSCHE CAYENNE owners tend to use this car less than the typical driver.
2020 PORSCHE CAYENNE Fuel Costs
The 2982cc 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 CAYENNE?
Total estimated annual running cost is £2,042 (£170/month), broken down as £1592 fuel, £195 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 96% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
PORSCHE CAYENNE Reliability Trend
Newer PORSCHE CAYENNEs show better MOT pass rates than older ones, with an average improvement of 7 percentage points.
Buying a Used 2020 PORSCHE CAYENNE
At 6 years old, the PORSCHE CAYENNE offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. With 7,136 MOT tests in our data, there's strong statistical confidence in these figures.
Common Issues to Watch For
Based on the 2020 PORSCHE CAYENNE's fuel type, age, and engine size, these are the most likely problem areas to check.
Timing Chain / Belt
Watch outAt 6 years old, check whether the timing belt has been replaced (typically due every 5-7 years or 60,000-100,000 miles). A snapped belt can destroy the engine.
Oil Consumption
Low riskLarger petrol engines can develop higher oil consumption as they age. Check the oil level and look for blue smoke from the exhaust.
Service History
Low riskAlways request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.
Running Costs Compared
How the 2020 PORSCHE CAYENNE stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| PORSCHE CAYENNE(2020) | 96% | £1592 | £195 | Grp 30-42 | £2042 |
| BMW 5 SERIES(2018) | 91% | £1592 | £190 | Grp 30-42 | £2037-£5 |
| LAND ROVER RANGE ROVER SPORT(2018) | 93% | £1592 | £190 | Grp 30-42 | £2037-£5 |
| BMW X3(2019) | 92% | £1592 | £190 | Grp 30-42 | £2037-£5 |
| MERCEDES GLC(2019) | 93% | £1592 | £190 | Grp 30-42 | £2037-£5 |
Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.
Related Porsche Models
Explore other Porsche cars or similar models in the same category.
PORSCHE MACAN
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2018 · 3996cc Petrol
PORSCHE BOXSTER
2005 · 3197cc Petrol
BMW 5 SERIES
2018 · 2998cc Petrol
LAND ROVER RANGE ROVER SPORT
2018 · 2995cc Petrol
BMW X3
2019 · 2998cc Petrol
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