PORSCHE UNCLASSIFIED (2015)
Running costs, reliability data, and common problems from 46 real MOT tests.
Annual Cost
£2,607
£217/month
MOT Pass Rate
98%
Excellent
Road Tax
£760
Based on CC/year
Insurance
Grp 35-50
3605cc Petrol
Great Choice
98% pass rate, £2607/year to run. 16 points above average.
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Annual Running Costs
~30 mpg
Based on 3605cc
Low estimate due to excellent reliability
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
Excellent reliability. Very few MOT failures. That's 16 points above the national average of 82%. It also outperforms the PORSCHE brand average of 92%.
At 11 years old, 98% of PORSCHE UNCLASSIFIEDs from 2015 passed their MOT first time in 2026. That's based on 46 tests across the UK. The average mileage at this age is 43,596 miles.
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How Does It Compare?
Mileage Analysis
43,596
Average miles
81,400
Expected for age
The average 2015 PORSCHE UNCLASSIFIED has 43,596 miles on the clock, which is below the expected 81,400 miles for a 11-year-old car. This suggests lighter use than average, which generally means less wear on major components.
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PORSCHE UNCLASSIFIED by Year
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About the 2015 PORSCHE UNCLASSIFIED
The 2015 PORSCHE UNCLASSIFIED is a luxury with a 3605cc petrol engine. 46 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It ranks in the top 7% of all 2015 cars for reliability.
With an average of 43,596 miles at 11 years old, PORSCHE UNCLASSIFIED owners tend to use this car less than the typical driver.
2015 PORSCHE UNCLASSIFIED Fuel Costs
The 3605cc 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 UNCLASSIFIED?
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 98% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Buying a Used 2015 PORSCHE UNCLASSIFIED
At 11 years old, the PORSCHE UNCLASSIFIED 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. Note: with only 46 tests in our data, these figures should be treated as indicative rather than definitive.
Common Issues to Watch For
Based on the 2015 PORSCHE UNCLASSIFIED's fuel type, age, and engine size, these are the most likely problem areas to check.
Timing Chain / Belt
Watch outAt 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 riskLarger 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 outAt 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 outRubber 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 riskAlways 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 UNCLASSIFIED stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| PORSCHE UNCLASSIFIED(2015) | 98% | £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.
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