Is the 2015 PORSCHE CAYENNE reliable?

Excellent reliability. Very few MOT failures. 93% of PORSCHE CAYENNEs from 2015 passed their MOT first time in 2026, based on 6,258 tests. That's 11 points above the national average of 82%.

How much does a 2015 PORSCHE CAYENNE cost to run?

Estimated annual running cost is £2,607 (£217/month), including £1592 fuel, £760 road tax, £55 MOT, and £200 predicted repairs.

What is the MOT pass rate for a 2015 PORSCHE CAYENNE?

The 2015 PORSCHE CAYENNE has a 93% MOT pass rate based on 6,258 tests in 2026. This ranks 100 out of 559 cars from 2015.

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%.

What is the average mileage for a 2015 PORSCHE CAYENNE?

The average mileage for a 2015 PORSCHE CAYENNE is 79,263 miles, which is in line with the expected 81,400 miles for a 11-year-old car, suggesting normal everyday use.

PORSCHE CAYENNE (2015)

Running costs, reliability data, and common problems from 6,258 real MOT tests.

Annual Cost

£2,607

£217/month

MOT Pass Rate

93%

Excellent

Road Tax

£760

Based on CC/year

Insurance

Grp 35-50

3604cc Petrol

Great Choice

93% pass rate, £2607/year to run. 11 points above average.

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Petrol3604cc11 years old6,258 tests79k miles avg

Annual Running Costs

Fuel (Petrol, 3604cc)

~30 mpg

£1,592

Road Tax

Based on 3604cc

£760

MOT Test

£55

Predicted Repairs

Low estimate due to excellent reliability

£200

Total per year£2,607

Per month£217/mo

Per week£50/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

93% MOT pass rate(Excellent)

0%National avg: 82%100%

Excellent reliability. Very few MOT failures. That's 11 points above the national average of 82%.

At 11 years old, 93% of PORSCHE CAYENNEs from 2015 passed their MOT first time in 2026. That's based on 6,258 tests across the UK. The average mileage at this age is 79,263 miles.

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How Does It Compare?

Rank among 2015 cars100th of 559(top 18%)

Rank among PORSCHE models132th of 276(top 48%)

vs national average+11%(82% avg)

vs 2015 cars average+10%(83% avg)

vs PORSCHE average+1%(92% avg)

Mileage Analysis

79,263

Average miles

81,400

Expected for age

The average 2015 PORSCHE CAYENNE has 79,263 miles on the clock, which is in line with the expected 81,400 miles for a 11-year-old car, suggesting normal everyday use.

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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 2015 sits between the two at 93%.

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

MERCEDES C

2016 · 3982cc Petrol

£2,247/year

88%

-5%

AUDI A6

2016 · 3993cc Petrol

£2,247/year

89%

-4%

PORSCHE MACAN

2015 · 3604cc Petrol

£2,097/year

91%

-2%

VOLKSWAGEN TOUAREG

2015 · 3600cc Petrol

£2,247/year

85%

-8%

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About the 2015 PORSCHE CAYENNE

The 2015 PORSCHE CAYENNE is a luxury with a 3604cc petrol engine. 6,258 of these vehicles were MOT tested in 2026, making it a reasonably common sight on UK roads. It ranks in the top 18% of all 2015 cars for reliability.

With an average of 79,263 miles at 11 years old, PORSCHE CAYENNE owners drive about as much as the UK average.

2015 PORSCHE CAYENNE Fuel Costs

The 3604cc 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 2015 PORSCHE CAYENNE?

Total estimated annual running cost is £2,607 (£217/month), broken down as £1592 fuel, £760 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 93% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

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 2015 PORSCHE CAYENNE

At 11 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%. With 6,258 MOT tests in our data, there's strong statistical confidence in these figures.

Common Issues to Watch For

Based on the 2015 PORSCHE CAYENNE's fuel type, age, and engine size, these are the most likely problem areas to check.

Timing Chain / Belt

Watch out

At 11 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.

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 2015 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(2015)	93%	£1592	£760	Grp 35-50	£2607
MERCEDES C(2016)	88%	£1592	£250	Grp 35-50	£2247-£360
AUDI A6(2016)	89%	£1592	£250	Grp 35-50	£2247-£360
PORSCHE MACAN(2015)	91%	£1592	£250	Grp 35-50	£2097-£510
VOLKSWAGEN TOUAREG(2015)	85%	£1592	£250	Grp 35-50	£2247-£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.