PORSCHE BOXSTER (2018)
Running costs, common problems, and reliability data based on 3,007 real MOT tests in 2024.
MOT Pass Rate
96%
Total Tests (2024)
3,007
Avg Mileage
26,673 mi
Est. Annual Cost
£1,772
Is the 2018 PORSCHE BOXSTER reliable?
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 BOXSTERs from 2018 passed their MOT first time in 2024. That's based on 3,007 tests across the UK. The average mileage at this age is 26,673 miles.
How does the 2018 PORSCHE BOXSTER compare?
Mileage Analysis
The average 2018 PORSCHE BOXSTER has 26,673 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.
Best year to buy a PORSCHE BOXSTER?
The most reliable year is the 2020 model with a 98% MOT pass rate, while the 1998 model has the lowest at 78%. The 2018 sits between the two at 96%.
How much does a 2018 PORSCHE BOXSTER 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 BOXSTER by Year
| Year | Pass Rate | Tests | Avg Mileage |
|---|---|---|---|
| 2021 | 98% | 727 | 12,725 mi |
| 2020 | 98% | 1,370 | 17,722 mi |
| 2019 | 97% | 2,672 | 21,404 mi |
| 2018 | 96% | 3,007 | 26,673 mi |
| 2017 | 96% | 2,767 | 31,373 mi |
| 2016 | 95% | 3,210 | 32,910 mi |
| 2015 | 97% | 2,716 | 32,812 mi |
| 2014 | 94% | 2,726 | 42,302 mi |
| 2013 | 94% | 3,111 | 45,989 mi |
| 2012 | 94% | 2,582 | 49,604 mi |
| 2011 | 92% | 1,483 | 50,786 mi |
| 2010 | 93% | 1,750 | 54,631 mi |
| 2009 | 94% | 1,731 | 61,617 mi |
| 2008 | 92% | 2,287 | 64,082 mi |
| 2007 | 89% | 3,485 | 72,004 mi |
| 2006 | 88% | 4,150 | 78,168 mi |
| 2005 | 86% | 6,992 | 78,175 mi |
| 2004 | 83% | 4,066 | 80,783 mi |
| 2003 | 82% | 5,008 | 83,796 mi |
| 2002 | 82% | 4,350 | 87,053 mi |
| 2001 | 83% | 4,134 | 86,615 mi |
| 2000 | 82% | 3,688 | 89,426 mi |
| 1999 | 81% | 3,058 | 94,996 mi |
| 1998 | 78% | 2,493 | 94,009 mi |
| 1997 | 83% | 1,352 | 93,558 mi |
| 1996 | 77% | 43 | 110,547 mi |
Checking a specific PORSCHE BOXSTER?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2018 PORSCHE BOXSTER
The 2018 PORSCHE BOXSTER is a luxury with a 1988cc petrol engine. 3,007 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. It ranks in the top 13% of all 2018 cars for reliability.
With an average of 26,673 miles at 6 years old, PORSCHE BOXSTER owners tend to use this car less than the typical driver.
2018 PORSCHE BOXSTER Fuel Costs
The 1988cc petrol engine offers a reasonable balance between performance and economy. Expect around 36 mpg in mixed driving, which works out to roughly £1,327 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2018 PORSCHE BOXSTER?
Total estimated annual running cost is £1,772 (£148/month), broken down as £1327 fuel, £190 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 BOXSTER Reliability Trend
Newer PORSCHE BOXSTERs show better MOT pass rates than older ones, with an average improvement of 11 percentage points.
Buying a Used 2018 PORSCHE BOXSTER
At 6 years old, the PORSCHE BOXSTER 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 2020 model has the highest pass rate at 98%.
Alternatives to the 2018 PORSCHE BOXSTER
The PORSCHE BOXSTER is actually the most reliable option among similar petrol luxurys from this era. Here are comparable petrol cars with similar engines:
- FORD FOCUS (2016) 87% pass rate (-9%) from 109,880 tests
- VOLKSWAGEN GOLF (2019) 92% pass rate (-4%) from 89,653 tests
- FORD KUGA (2018) 90% pass rate (-6%) from 67,605 tests
- MINI COOPER (2018) 92% pass rate (-4%) from 55,706 tests