Porsche Boxster

Reliability, estimated running costs, and MOT data across 26 model years from 74,958 MOT tests in 2024.

Avg Pass Rate

89%

Total Tests

74,958

Highest Pass Rate

2020 (98%)

Years Covered

About the Porsche Boxster

The Porsche Boxster was MOT tested 74,958 times in 2024 (DVSA data, retests included) across 26 model years (1996 to 2021), with an average pass rate of 89%. That's comfortably above the average of 82% across all models in our data. Our records list petrol versions.

Best and Worst Years

Of the years with at least 100 tests, the 2020 model has the highest pass rate at 98% from 1,370 tests. The 1998 model has the lowest at 78%. With a 20 point gap, the year you choose makes a real difference. Newer cars usually pass more often simply because they are younger.

Reliability Trend

Newer Porsche Boxsters pass their MOT more often than older ones, by 11 percentage points on average, which is mostly down to age and wear.

Mileage Across Years

The oldest model in our data (1996) averages 110,547 miles, while the newest (2021) averages 12,725 miles. Older models have covered serious mileage, so suspension and drivetrain wear are worth checking.

Estimated Running Costs

Fuel (Petrol, 1988cc)

£1,631

Road Tax

£200

MOT Test

£55

Predicted Repairs

£200

Total per year£2,086

Per month£174/mo

Based on 7,400 miles/year, average pump prices of 174.57p petrol and 199.33p diesel (GOV.UK weekly road fuel prices, week of 19 October 2026), and MOT pass rate data. Insurance not included.

Full 2021 details

How reliable is the Porsche Boxster?

vs average of all models+7% (82% avg)

vs Porsche brand average-3% (92% avg)

Best to worst year spread20 percentage points

Reliability trendImproving over years

Porsche Boxster by Year

Click any year to see detailed running costs, reliability data, and comparisons with similar cars.

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

Questions about the Porsche Boxster

Is the Porsche Boxster reliable?

Across its 26 model years in our data (1996 to 2021), the Porsche Boxster averages an 89% MOT pass rate, from 74,958 tests (DVSA MOT data for tests in 2024, retests included). That's 7 points above the average of 82% across all models in the same data. The 2020 model has the highest pass rate of the years with at least 100 tests, at 98%.

Which year Porsche Boxster has the best MOT pass rate?

Of the years with at least 100 tests, the 2020 Porsche Boxster has the highest MOT pass rate at 98%, while the 1998 model has the lowest at 78%, a 20 point gap. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.