PORSCHE 911 (2020)
Running costs, common problems, and reliability data based on 2,366 real MOT tests in 2024.
MOT Pass Rate
97%
Total Tests (2024)
2,366
Avg Mileage
17,049 mi
Est. Annual Cost
£2,037
Is the 2020 PORSCHE 911 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 911s from 2020 passed their MOT first time in 2024. That's based on 2,366 tests across the UK. The average mileage at this age is 17,049 miles.
How does the 2020 PORSCHE 911 compare?
Mileage Analysis
The average 2020 PORSCHE 911 has 17,049 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 911?
The most reliable year is the 2021 model with a 100% MOT pass rate, while the 1998 model has the lowest at 85%. The 2020 sits between the two at 97%.
How much does a 2020 PORSCHE 911 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 911 by Year
| Year | Pass Rate | Tests | Avg Mileage |
|---|---|---|---|
| 2021 | 100% | 72 | 11,708 mi |
| 2020 | 97% | 2,366 | 17,049 mi |
| 2019 | 97% | 7,188 | 20,907 mi |
| 2018 | 96% | 7,623 | 18,989 mi |
| 2017 | 97% | 6,200 | 26,067 mi |
| 2016 | 97% | 5,524 | 28,111 mi |
| 2015 | 97% | 4,950 | 32,698 mi |
| 2014 | 96% | 4,806 | 32,843 mi |
| 2013 | 96% | 3,535 | 43,937 mi |
| 2012 | 95% | 4,253 | 50,959 mi |
| 2011 | 95% | 2,580 | 43,837 mi |
| 2010 | 94% | 3,656 | 49,709 mi |
| 2009 | 92% | 3,055 | 59,885 mi |
| 2008 | 92% | 4,216 | 58,132 mi |
| 2007 | 90% | 5,366 | 62,566 mi |
| 2006 | 90% | 6,184 | 70,206 mi |
| 2005 | 90% | 5,986 | 73,824 mi |
| 2004 | 88% | 5,191 | 74,425 mi |
| 2003 | 87% | 5,168 | 82,296 mi |
| 2002 | 86% | 4,972 | 84,310 mi |
| 2001 | 88% | 2,885 | 87,628 mi |
| 2000 | 86% | 2,099 | 90,453 mi |
| 1999 | 87% | 3,668 | 94,086 mi |
| 1998 | 85% | 3,337 | 99,008 mi |
| 1997 | 90% | 2,103 | 76,331 mi |
| 1996 | 91% | 2,651 | 80,487 mi |
| 1995 | 89% | 1,831 | 80,965 mi |
| 1994 | 91% | 1,473 | 95,559 mi |
| 1993 | 91% | 698 | 89,736 mi |
| 1992 | 94% | 611 | 81,375 mi |
| 1991 | 91% | 929 | 81,480 mi |
| 1990 | 91% | 1,888 | 94,950 mi |
Checking a specific PORSCHE 911?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2020 PORSCHE 911
The 2020 PORSCHE 911 is a luxury with a 2981cc petrol engine. 2,366 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 17,049 miles at 4 years old, PORSCHE 911 owners tend to use this car less than the typical driver.
2020 PORSCHE 911 Fuel Costs
The 2981cc 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 911?
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 911 Reliability Trend
Newer PORSCHE 911s show better MOT pass rates than older ones, with an average improvement of 6 percentage points.
Buying a Used 2020 PORSCHE 911
At 4 years old, the PORSCHE 911 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 2021 model has the highest pass rate at 100%.
Alternatives to the 2020 PORSCHE 911
The PORSCHE 911 is actually the most reliable option among similar petrol luxurys from this era. Here are comparable petrol cars with similar engines:
- BMW 5 SERIES (2018) 91% pass rate (-6%) from 40,272 tests
- LAND ROVER RANGE ROVER SPORT (2018) 93% pass rate (-4%) from 34,257 tests
- BMW X3 (2019) 92% pass rate (-5%) from 32,937 tests
- MERCEDES GLC (2019) 93% pass rate (-4%) from 30,341 tests