How much does a 2003 PORSCHE CAYENNE 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 2003 PORSCHE CAYENNE?

The 2003 PORSCHE CAYENNE has a 84% MOT pass rate based on 1,257 tests in 2026. This ranks 59 out of 445 cars from 2003.

Which year PORSCHE CAYENNE is most reliable?

The 2020 PORSCHE CAYENNE has the highest MOT pass rate at 96%. The least reliable year is 2007 at 83%.

PORSCHE CAYENNE (2003)

Q: Is the 2003 PORSCHE CAYENNE reliable?

Good reliability. Occasional issues but generally solid. 84% of PORSCHE CAYENNEs from 2003 passed their MOT first time in 2026, based on 1,257 tests. That's 2 points above the national average of 82%.

Q: What is the average mileage for a 2003 PORSCHE CAYENNE?

The average mileage for a 2003 PORSCHE CAYENNE is 121,522 miles, which is below the expected 170,200 miles for a 23-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 1,257 real MOT tests.

Annual Cost

£2,757

£230/month

MOT Pass Rate

84%

Good

Road Tax

£760

Based on CC/year

Insurance

Grp 35-50

4511cc Petrol

Solid Option

84% pass rate, £2757/year to run. Close to the national average.

Buying this car? Check for finance, write-offs & theft

£4.99

Check a specific PORSCHE CAYENNE

Enter a reg plate for full MOT history, mileage check, health score, running costs, and reliability data. Free, instant, no signup.

Petrol4511cc23 years old1,257 tests122k miles avg

Annual Running Costs

Fuel (Petrol, 4511cc)

~30 mpg

£1,592

Road Tax

Based on 4511cc

£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.

🛡️

Get an insurance quote for this PORSCHE CAYENNE

Compare quotes and find the best deal

Reliability Verdict

84% MOT pass rate(Good)

0%National avg: 82%100%

Good reliability. Occasional issues but generally solid. That's close to the national average of 82%. It falls below the PORSCHE brand average of 92%.

At 23 years old, 84% of PORSCHE CAYENNEs from 2003 passed their MOT first time in 2026. That's based on 1,257 tests across the UK. The average mileage at this age is 121,522 miles.

Got a PORSCHE CAYENNE you're looking at?

Enter the reg plate to check its specific MOT history, mileage, and health score.

How Does It Compare?

Rank among 2003 cars59th of 445(top 13%)

Rank among PORSCHE models245th of 276(top 89%)

vs national average+2%(82% avg)

vs 2003 cars average+12%(72% avg)

vs PORSCHE average-8%(92% avg)

Mileage Analysis

121,522

Average miles

170,200

Expected for age

The average 2003 PORSCHE CAYENNE has 121,522 miles on the clock, which is below the expected 170,200 miles for a 23-year-old car. This suggests lighter use than average, which generally means less wear on major components.

Looking at a specific PORSCHE CAYENNE?

Enter its reg plate for a free check with full MOT history, mileage verification, and predicted costs.

Best Year to Buy?

The most reliable year is the 2020 model with a 96% MOT pass rate, while the 2007 model has the lowest at 83%. The 2003 sits between the two at 84%.

PORSCHE CAYENNE by Year

Year	Pass Rate	Tests	Avg Mileage
2022	96%	83	24,282 mi
2021	95%	4,115	27,090 mi
2020	96%	7,136	34,631 mi
2019	95%	9,063	40,685 mi
2018	93%	5,310	51,571 mi
2017	92%	4,856	65,047 mi
2016	92%	7,333	71,856 mi
2015	93%	6,258	79,263 mi
2014	91%	5,626	86,652 mi
2013	91%	6,261	96,482 mi
2012	89%	5,233	104,317 mi
2011	90%	3,069	107,653 mi
2010	89%	2,126	113,736 mi
2009	87%	1,955	119,837 mi
2008	86%	1,384	109,907 mi
2007	83%	1,790	115,755 mi
2006	86%	2,242	118,992 mi
2005	84%	2,951	124,592 mi
2004	84%	2,598	125,338 mi
2003	84%	1,257	121,522 mi

Similar Cars to Consider

BMW X5

2005 · 4799cc Petrol

£2,397/year

77%

-7%

MERCEDES CLK

2004 · 4966cc Petrol

£2,397/year

76%

-8%

LAND ROVER RANGE ROVER SPORT

2005 · 4394cc Petrol

£2,247/year

82%

-2%

MERCEDES SL

2003 · 4966cc Petrol

£2,247/year

86%

+2%

Check a Specific Porsche Cayenne

Enter a reg plate to get the full MOT history, health score, and mileage verification.

Upgrade to Premium (£4.99) for stolen, finance, and write-off checks.

About the 2003 PORSCHE CAYENNE

The 2003 PORSCHE CAYENNE is a luxury with a 4511cc petrol engine. 1,257 of these vehicles were MOT tested in 2026, making it a reasonably common sight on UK roads. It ranks in the top 13% of all 2003 cars for reliability.

With an average of 121,522 miles at 23 years old, PORSCHE CAYENNE owners tend to use this car less than the typical driver.

2003 PORSCHE CAYENNE Fuel Costs

The 4511cc 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 2003 PORSCHE CAYENNE?

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 84% pass rate. Keeping on top of servicing will help avoid surprises.

PORSCHE CAYENNE Reliability Trend

Newer PORSCHE CAYENNEs show better MOT pass rates than older ones, with an average improvement of 7 percentage points.

Buying a Used 2003 PORSCHE CAYENNE

At 23 years old, the PORSCHE CAYENNE 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 2020 model has the highest pass rate at 96%.

Common Issues to Watch For

Based on the 2003 PORSCHE CAYENNE's fuel type, age, and engine size, these are the most likely problem areas to check.

Timing Chain / Belt

Watch out

At 23 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

Watch out

With an average of 122k 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.

Engine Mounts

Medium risk

Worn engine mounts cause excessive vibration and movement. Replacement costs £150-£400 per mount. Check for vibration at idle with the bonnet open.

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 2003 PORSCHE CAYENNE stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
PORSCHE CAYENNE(2003)	84%	£1592	£760	Grp 35-50	£2757
BMW X5(2005)	77%	£1592	£250	Grp 35-50	£2397-£360
MERCEDES CLK(2004)	76%	£1592	£250	Grp 35-50	£2397-£360
LAND ROVER RANGE ROVER SPORT(2005)	82%	£1592	£250	Grp 35-50	£2247-£510
MERCEDES SL(2003)	86%	£1592	£250	Grp 35-50	£2247-£510

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.