How much does a 2005 PORSCHE CAYMAN cost to run?

Estimated annual running cost is £2,757 (£230/month), including £1592 fuel, £760 road tax, £55 MOT, and £350 predicted repairs.

What is the MOT pass rate for a 2005 PORSCHE CAYMAN?

The 2005 PORSCHE CAYMAN has a 89% MOT pass rate based on 361 tests in 2026. This ranks 51 out of 526 cars from 2005.

Which year PORSCHE CAYMAN is most reliable?

The 2022 PORSCHE CAYMAN has the highest MOT pass rate at 100%. The least reliable year is 2006 at 86%.

PORSCHE CAYMAN (2005)

Q: Is the 2005 PORSCHE CAYMAN reliable?

Good reliability. Occasional issues but generally solid. 89% of PORSCHE CAYMANs from 2005 passed their MOT first time in 2026, based on 361 tests. That's 7 points above the national average of 82%.

Q: What is the average mileage for a 2005 PORSCHE CAYMAN?

The average mileage for a 2005 PORSCHE CAYMAN is 84,339 miles, which is below the expected 155,400 miles for a 21-year-old car. This suggests lighter use than average, which generally means less wear on major components.

Running costs, reliability data, and common problems from 361 real MOT tests.

Annual Cost

£2,757

£230/month

MOT Pass Rate

89%

Good

Road Tax

£760

Based on CC/year

Insurance

Grp 35-50

3387cc Petrol

Solid Option

89% pass rate, £2757/year to run. 7 points above average.

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Petrol3387cc21 years old361 tests84k miles avg

Annual Running Costs

Fuel (Petrol, 3387cc)

~30 mpg

£1,592

Road Tax

Based on 3387cc

£760

MOT Test

£55

Predicted Repairs

£350

Total per year£2,757

Per month£230/mo

Per week£53/wk

Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.

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Reliability Verdict

89% MOT pass rate(Good)

0%National avg: 82%100%

Good reliability. Occasional issues but generally solid. That's 7 points above the national average of 82%.

At 21 years old, 89% of PORSCHE CAYMANs from 2005 passed their MOT first time in 2026. That's based on 361 tests across the UK. The average mileage at this age is 84,339 miles.

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How Does It Compare?

Rank among 2005 cars51th of 526(top 10%)

Rank among PORSCHE models201th of 276(top 73%)

vs national average+7%(82% avg)

vs 2005 cars average+17%(72% avg)

vs PORSCHE average-3%(92% avg)

Mileage Analysis

84,339

Average miles

155,400

Expected for age

The average 2005 PORSCHE CAYMAN has 84,339 miles on the clock, which is below the expected 155,400 miles for a 21-year-old car. This suggests lighter use than average, which generally means less wear on major components.

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Best Year to Buy?

The most reliable year is the 2022 model with a 100% MOT pass rate, while the 2006 model has the lowest at 86%. The 2005 sits between the two at 89%.

PORSCHE CAYMAN by Year

Year	Pass Rate	Tests	Avg Mileage
2022	100%	60	10,562 mi
2021	97%	1,230	16,318 mi
2020	97%	1,421	17,106 mi
2019	95%	2,635	23,973 mi
2018	96%	3,611	29,634 mi
2017	95%	2,747	32,888 mi
2016	96%	2,725	30,854 mi
2015	96%	2,774	36,438 mi
2014	94%	2,963	49,014 mi
2013	95%	2,270	50,622 mi
2012	96%	691	51,012 mi
2011	92%	1,167	54,736 mi
2010	90%	1,201	67,244 mi
2009	93%	1,466	67,126 mi
2008	89%	2,312	74,137 mi
2007	88%	3,100	77,221 mi
2006	86%	3,424	80,301 mi
2005	89%	361	84,339 mi

Similar Cars to Consider

LAND ROVER FREELANDER

2007 · 3192cc Petrol

£2,397/year

75%

-14%

MERCEDES E

2004 · 3199cc Petrol

£2,397/year

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MERCEDES CLK

2007 · 2997cc Petrol

£2,397/year

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JAGUAR X-TYPE

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About the 2005 PORSCHE CAYMAN

The 2005 PORSCHE CAYMAN is a luxury with a 3387cc petrol engine. 361 of these vehicles were MOT tested in 2026, making it a less common model in the UK market. It ranks in the top 10% of all 2005 cars for reliability.

With an average of 84,339 miles at 21 years old, PORSCHE CAYMAN owners tend to use this car less than the typical driver.

2005 PORSCHE CAYMAN Fuel Costs

The 3387cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,592 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).

What does it cost to own a 2005 PORSCHE CAYMAN?

Total estimated annual running cost is £2,757 (£230/month), broken down as £1592 fuel, £760 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 89% pass rate. Keeping on top of servicing will help avoid surprises.

PORSCHE CAYMAN Reliability Trend

Newer PORSCHE CAYMANs show better MOT pass rates than older ones, with an average improvement of 5 percentage points.

Buying a Used 2005 PORSCHE CAYMAN

At 21 years old, the PORSCHE CAYMAN is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age. If you're flexible on year, the 2022 model has the highest pass rate at 100%.

Common Issues to Watch For

Based on the 2005 PORSCHE CAYMAN's fuel type, age, and engine size, these are the most likely problem areas to check.

Timing Chain / Belt

Watch out

At 21 years old, check whether the timing belt has been replaced (typically due every 5-7 years or 60,000-100,000 miles). A snapped belt can destroy the engine.

Oil Consumption

Medium risk

Larger petrol engines can develop higher oil consumption as they age. Check the oil level and look for blue smoke from the exhaust.

Rust and Corrosion

Watch out

At 10+ years, check wheel arches, sills, subframe, and brake lines for rust. Structural corrosion is an MOT failure. Prevention is far cheaper than repair.

Suspension Bushings

Watch out

Rubber suspension bushes harden and crack with age, causing knocking noises and vague handling. A full refresh costs £300-£800 depending on the car.

Clutch Wear

Medium risk

With an average of 84k miles, clutch replacement may be due (typical lifespan 60,000-100,000 miles). Budget £400-£800 for a new clutch kit.

Brake Discs and Pads

Medium risk

High-mileage cars often need brake disc replacement, not just pads. A full set of discs and pads costs £200-£500 per axle.

Service History

Low risk

Always request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.

Running Costs Compared

How the 2005 PORSCHE CAYMAN stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
PORSCHE CAYMAN(2005)	89%	£1592	£760	Grp 35-50	£2757
LAND ROVER FREELANDER(2007)	75%	£1592	£250	Grp 35-50	£2397-£360
MERCEDES E(2004)	78%	£1592	£250	Grp 35-50	£2397-£360
MERCEDES CLK(2007)	76%	£1592	£250	Grp 30-42	£2397-£360
JAGUAR X-TYPE(2007)	71%	£1592	£250	Grp 30-42	£2397-£360

Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.