PORSCHE 911 (2017)
Running costs, common problems, and reliability data based on 6,200 real MOT tests in 2024.
MOT Pass Rate
97%
Total Tests (2024)
6,200
Avg Mileage
26,067 mi
Est. Annual Cost
£2,037
Is the 2017 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 7 years old, 97% of PORSCHE 911s from 2017 passed their MOT first time in 2024. That's based on 6,200 tests across the UK. The average mileage at this age is 26,067 miles.
How does the 2017 PORSCHE 911 compare?
Mileage Analysis
The average 2017 PORSCHE 911 has 26,067 miles on the clock, which is below the expected 51,800 miles for a 7-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 2017 sits between the two at 97%.
How much does a 2017 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 2017 PORSCHE 911
The 2017 PORSCHE 911 is a luxury with a 3996cc petrol engine. 6,200 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. It ranks in the top 8% of all 2017 cars for reliability.
With an average of 26,067 miles at 7 years old, PORSCHE 911 owners tend to use this car less than the typical driver.
2017 PORSCHE 911 Fuel Costs
The 3996cc 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 2017 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 2017 PORSCHE 911
At 7 years old, this is a solid used buy if you find one with good service history. Depreciation has levelled off, so you won't lose much more value. Focus on condition over mileage. If you're flexible on year, the 2021 model has the highest pass rate at 100%. With 6,200 MOT tests in our data, there's strong statistical confidence in these figures.
Alternatives to the 2017 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:
- MERCEDES C (2016) 88% pass rate (-9%) from 80,181 tests
- AUDI A6 (2016) 89% pass rate (-8%) from 26,437 tests
- PORSCHE MACAN (2015) 91% pass rate (-6%) from 10,904 tests
- VOLKSWAGEN TOUAREG (2015) 85% pass rate (-12%) from 9,905 tests