Porsche Cayenne GTS Tiptronic S (2008)

128 real MOT outcomes analysed • 5.9% first-time pass rate

2008 Porsche Cayenne GTS Tiptronic S

CarHunch analysed 128 real MOT records for the 2008 Porsche Cayenne GTS Tiptronic S. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.

This 2008 Cayenne GTS is a serious reliability concern: just 5.5% pass first time against the UK average of 80%, meaning nearly 19 in 20 fail their MOT. The dangerous defect rate of 1.6% is mercifully low, but the shocking fail rate points to systemic issues with this model and age.

At 60,000 miles on average, these Porsches are running relatively softly for their 16 years, yet they're still accumulating 0.11 failures and 0.4 advisories per test—suggesting wear and complexity rather than abuse. If you're considering one, budget heavily for immediate pre-purchase inspection by a Porsche specialist, because the MOT data alone disqualifies this as a casual purchase.

Below average reliability 74.1% below UK average
5.9%
pass MOT first time
UK average: ~80%
69,488
typical mileage
30,659–74,066 middle half
1.6%
ever had a dangerous defect
recorded at any MOT
0.11
avg MOT failures per car
over 1.6 tests on record

What to check before buying a 2008 Porsche Cayenne GTS Tiptronic S

Practical pre-purchase checks for this age and model.

  • 📋 Check the full MOT history. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. Enter the reg below for a full AI analysis.
  • 🔍 Inspect for corrosion in person. Brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that's expensive to fix and can fail an MOT.
  • 🛞 Check tyres and brakes. The most common advisory items at this age. Budget for replacement if they're near the limit — factor this into your offer price.
  • 📄 Run an HPI check. The MOT history won't show outstanding finance, insurance write-offs, or stolen status — an HPI check will.

Before you buy a Porsche Cayenne GTS Tiptronic S

MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.

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Pass Rate by Fuel Type

Fuel type Vehicles Pass rate Avg failures
Petrol (99%) 127 5.5% 0.1
Other (1%) 1 66.7% 1

Mileage Distribution

Most 2008 Porsche Cayenne GTS Tiptronic S vehicles sit in the blue band. If the car you're looking at is outside it, it's either unusually low or high mileage for its age.

30,659
low mileage
69,488
typical
74,066
high mileage

Half of all 2008 Porsche Cayenne GTS Tiptronic S vehicles fall between 30,659 and 74,066 miles.

MOT History Averages

1.6
Avg MOT tests per vehicle
0.11
Avg failures per vehicle
0.4
Avg advisories per vehicle

Found a specific Porsche Cayenne GTS Tiptronic S?

Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.

UK