2018 Porsche Cayenne: MOT pass rate and reliability

89.1% of 2018 Porsche Cayennes pass the MOT first time, measured across 1,883 DVSA tests on that model year alone. The average one had covered 51,645 miles.

How the 2018 compares

  • Against all Porsche Cayennes (87.1%, 29,081 tests): +2 points
  • Against all 2018 cars (85.9%): +3.2 points
  • National first-time pass rate, all cars and years: 77%

Every Porsche Cayenne model year

Pass rates fall as cars age, so the only fair comparison for a 2018 car is other cars of the same age. The full run for the Porsche Cayenne:

Year Pass rate Tests Avg mileage
2003 78.1% 503 121,317
2004 77.1% 1,051 125,607
2005 79.1% 1,236 122,108
2006 80.1% 876 119,358
2007 76.9% 675 115,079
2008 80.2% 575 107,539
2009 81.4% 800 117,266
2010 84.2% 855 114,215
2011 85.8% 1,081 109,504
2012 83.6% 1,790 102,643
2013 85.8% 2,156 95,274
2014 86.3% 1,882 86,824
2015 89.2% 2,367 78,798
2016 88.1% 2,784 71,176
2017 88.7% 1,833 63,322
2018 89.1% 1,883 51,645
2019 93.4% 3,094 39,720
2020 94.5% 2,144 34,372
2021 93.9% 1,452 27,142

What this means if you are buying a 2018 Cayenne

The 2018 is one of the stronger years for this model, passing 2 points more often than the Porsche Cayenne average. That is a point in its favour, though condition and service history still matter more than the model year. Check the exact car with the free MOT history checker before you buy, and run its VIN and mileage through our free VIN decoder and clocking check.

What an 8-year-old car fails on

A 2018 car is 8 years old now, and age drives the failure mix more than the badge does. Across all cars tested, these are the categories that actually cause failures:

  • Lights and electrical: 10.36% of all cars tested
  • Suspension: 8.65% of all cars tested
  • Tyres: 6.23% of all cars tested
  • Brakes: 6.1% of all cars tested
  • Visibility: wipers, washers, glass: 4.65% of all cars tested
  • Body, chassis and structure: 3.18% of all cars tested

That is around average, so condition and service history will tell you more than the odometer does. On a 2018 Porsche Cayenne the average at test was 51,645 miles, so treat anything far above that as a car that has worked harder than its peers, and anything far below as one worth checking for the faults that come from standing still.

The strongest year for this model is 2020 at 94.5%, and the weakest in our data is 2007 at 76.9%. That 17.6 point spread across the model's life is why comparing a 2018 car against a newer one tells you very little.

Nearby model years

All Porsche Cayenne MOT data · Every model