Used car guide

2015 Porsche Cayman: common problems and what to check

What gets flagged at MOT on 2015 Porsche Caymans, from 1,096 tests in 2025, plus known faults and what to look at before you buy one.

1,096MOT tests in 2025
93%pass first time (all 2015 cars: 72%)
3,700typical miles a year
16%had tyres flagged

What gets flagged at MOT

The share of 2015 Porsche Cayman MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Tyres
    16% 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.

  • Brakes
    9% 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
    4% 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.

  • Wipers, windscreen and mirrors
    3% 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
    2% of testsRough price £10–£80

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

  • 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 Cayman?

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Other years

YearMOT testsMost flagged
20191,002Tyres 19%
20181,195Tyres 17%
2017884Tyres 19%
20161,006Tyres 13%
20141,196Tyres 17%
20131,042Tyres 17%
2011540Brakes 20%
2010530Brakes 25%
2009657Brakes 21%
2008853Brakes 25%
20071,388Brakes 26%
20061,449Brakes 30%

Where this comes from: the DVSA's anonymised results for every MOT test in Great Britain in 2025, counting tests of 2015 Porsche Caymans registered in 2015. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score