Should I check the MOT history before buying a 2005 Porsche Cayman?

Yes. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. A full MOT history analysis will highlight patterns that a single test result won't reveal.

What corrosion should I look for when inspecting a 2005 Porsche Cayman?

Check brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that is expensive to fix and can fail an MOT.

How are tyres and brakes typically on a 2005 Porsche Cayman?

Tyres and brakes are the most common advisory items on vehicles of this age. Budget for replacement if they are near the limit, and factor this into your offer price.

How many 2005 Porsche Cayman vehicles have had dangerous defects recorded?

25% of these vehicles have had a dangerous defect recorded. Search the registration on CarHunch — the full MOT history will show exactly what was flagged and whether it was resolved.

Is the 2005 Porsche Cayman reliable?

Based on MOT data from 240 vehicles, the 2005 Porsche Cayman has a first-time MOT pass rate of 83.7%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

What are common problems with the 2005 Porsche Cayman?

The most frequently recorded MOT issues on the 2005 Porsche Cayman are: Under-trays fitted obscuring some underside components (66.2% of vehicles), Nearside Rear Tyre worn close to the legal limit (53.5% of vehicles), Offside Rear Tyre worn close to the legal limit (52.9% of vehicles). These figures are based on actual MOT test records — search a specific registration on CarHunch to see its individual history.

Do I need an HPI check when buying a 2005 Porsche Cayman?

Yes. The MOT history will not show outstanding finance, insurance write-offs, or stolen status. An HPI check covers these areas and should be part of any used car purchase.

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Porsche Cayman (2005)

240 real MOT outcomes analysed • 83.7% first-time pass rate

2005 Porsche Cayman

CarHunch analysed 240 real MOT records for the 2005 Porsche Cayman. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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AI Analysis Reliability Overview Common Issues Check a Specific Reg Buyer's Checklist Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

The 2005 Porsche Cayman passes its MOT first time at 83.7%, which is above the UK average of 80%, but a quarter of these cars (25.4%) have recorded at least one dangerous defect during testing—a meaningful concern for a buyer considering a nearly 20-year-old sports car. The petrol engine reliability is solid relative to the benchmark, though the high proportion of serious defects suggests inspection history matters more than the headline pass rate.

These Caymans are running at a sensible 55,641 miles on average, suggesting they've been driven but not thrashed, yet they're averaging 3.06 failures and 18.6 advisories per test, pointing to typical wear in suspension, brakes, and engine components. Before buying, obtain the full MOT history and have an independent Porsche specialist inspect the undercarriage and cooling system, as the advisory burden hints at age-related deterioration becoming routine.

We have limited data for the 2005 Porsche Cayman — treat the figures below as indicative rather than definitive.

⚠️ Over 1 in 5 of these vehicles have had a dangerous MOT failure at some point — usually tyres or brakes, and often a one-off issue rather than a persistent problem. The group stats won't tell you which one you're looking at.

First-time pass

83.7%

UK average ~80%

Around average

Dangerous (ever)

25.4%

At least once in MOT history

Check this vehicle

Avg failures / car

3.06

Over 16.9 tests on record

High

Typical mileage

54k

Middle half: 39k–70k

For context

These stats describe 240 vehicles as a group. The specific vehicle you're looking at could be the one good example or the one outlier. Run its registration to find out.

Watch for defects — worth knowing

What tends to go wrong

Across 240 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Other issues 66.2%

Under-trays fitted obscuring some underside components · Engine covers fitted obscuring some components in the engine bay · Oil leak, but not excessive

Tyre wear 53.5%

Nearside Rear Tyre worn close to the legal limit · Offside Rear Tyre worn close to the legal limit · Nearside Front Tyre worn close to the legal limit · …

Budget for a full set — on a vehicle this age, tyres are expected consumables. An inspection will confirm how much is left.

Brake wear 37.1%

Offside Front Brake pipe corroded, covered in grease or other material · Nearside Front Brake pipe corroded, covered in grease or other material · Front brake disc worn, pitted or scored, but not seriously weakened · …

Ask the seller when brakes were last serviced. If they don't know, factor in the cost.

Data covers a 3-year window centred on 2005.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 240 Porsche Cayman cars.

Before you buy a 2005 Porsche Cayman

Based on MOT data from 240 vehicles — here's what to check.

📋 Check the full MOT history. 25.4% of these vehicles have had a dangerous defect recorded - recurring advisories often signal problems years before they become failures.
Search the reg on CarHunch for the full MOT history, reliability stats and a free AI-powered analysis of that exact vehicle.
🔍 Brake pipes, sills and subframes are the key areas on a vehicle this age — structural rust is hard to spot without getting underneath. A mechanic will check all of this before you commit, and give you a concrete basis to negotiate on price. Inspection →
📄 Outstanding finance, insurance write-offs and clocking won't appear in the MOT records — a dedicated history check covers all of this. Our link gets you 20% off automatically. History Get 20% off via CarHunch

Colour Breakdown

Based on 17,092 Porsche Cayman vehicles registered in the UK — across all years. From DVLA registration records.

Black 22.2%

3,794

Grey 18.7%

3,199

Silver 15.6%

2,672

Blue 14.9%

2,543

White 12.1%

2,073

Red 11.1%

1,900

Yellow 2.5%

429

Green 1.6%

268

Orange 0.8%

138

Brown 0.3%

Purple 0.1%

Multi-colour 0%

Mileage Distribution

Most 2005 Porsche Cayman vehicles sit in the blue band. If the vehicle you're looking at is outside it, it's either unusually low or high mileage for its age.

54,147

typical

38,913

low mileage

69,689

high mileage

Half of all 2005 Porsche Cayman vehicles fall between 38,913 and 69,689 miles.

Is the mileage you're seeing normal?

✓ Under 38,913 miles — lower than most. Could be great, or could be a vehicle that rarely moved. Check test frequency and mileage progression in the MOT history.

✓ 38,913–69,689 miles — normal for age. This is where most 2005 Porsche Caymans sit.

⚠ Over 94,080 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2005 Porsche Cayman — Still on the Road

Most 2005 Porsche Caymans are still being driven.

144 vehicles still getting MOTs in 2025 — 74% of the peak remain.

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2014–2025.
* The 2020 dip reflects the government's COVID-19 MOT exemption, which allowed certificates to be extended by six months — fewer tests were conducted that year.

MOT History Averages

16.9

Avg MOT tests per vehicle

3.06

Avg failures per vehicle

18.6

Avg advisories per vehicle

Other model years — Porsche Cayman: All Cayman years → Which year to buy? →

2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022

Or browse all models: Porsche →

Compare with another model

See how the 2005 Porsche Cayman stacks up against a rival.

Watch for defects — worth knowing