Used car guide

2020 Porsche Boxster: common problems and what to check

What gets flagged at MOT on 2020 Porsche Boxsters, from 459 tests in 2025, plus known faults and what to look at before you buy one.

Small sample: only 459 of these were MOT tested in 2025, so treat the percentages as rough. The known faults below don't depend on it.

459MOT tests in 2025
93%pass first time (all 2020 cars: 86%)
4,000typical miles a year
19%had tyres flagged

What gets flagged at MOT

The share of 2020 Porsche Boxster MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Tyres
    19% of testsRough price £70–£150

    At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.

  • Wipers, windscreen and mirrors
    4% of testsRough price £15–£250

    At the viewing: Check for chips in the driver's view, and test the wipers and washers.

  • Lights and electrics
    3% of testsRough price £10–£80

    At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.

  • Brakes
    3% of testsRough price £150–£350

    At the viewing: Look for a lip on the disc edges and feel for judder or pulling when braking firmly from about 40mph.

  • Suspension
    1% of testsRough price £120–£400

    At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.

  • Oil and fluid leaks
    1% of testsRough price £80–£600

    At the viewing: Look under the engine and on the ground where the car is usually parked for fresh oil or fluid.

Looking at a Porsche Boxster?

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Other years

YearMOT testsMost flagged
2022272Tyres 14%
2021284Tyres 14%
2019885Tyres 17%
20181,010Tyres 17%
2017986Tyres 20%
20161,232Tyres 17%
20151,080Tyres 17%
20141,202Tyres 17%
20131,256Tyres 17%
20121,099Tyres 20%
2011777Brakes 19%
2010811Brakes 18%
2009859Brakes 20%
20081,049Brakes 23%
20071,568Brakes 25%
20061,848Brakes 27%
20053,214Brakes 30%
20041,997Brakes 30%
20032,380Brakes 33%
20022,091Brakes 32%
20012,024Brakes 34%
20001,853Brakes 34%
19991,014Brakes 33%
1998728Brakes 30%
1997371Brakes 32%

Where this comes from: the DVSA's anonymised results for every MOT test in Great Britain in 2025, counting tests of 2020 Porsche Boxsters registered in 2020. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score