SUBARU FORESTR (2015)
Running costs, reliability data, and common problems from 307 real MOT tests.
Annual Cost
£1,707
£142/month
MOT Pass Rate
80%
Good
Road Tax
£265
Based on CC/year
Insurance
Grp 18-32
1998cc Diesel
Solid Option
80% pass rate, £1707/year to run. Close to the national average.
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Annual Running Costs
~48 mpg
Based on 1998cc
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
Good reliability. Occasional issues but generally solid. That's close to the national average of 82%.
At 11 years old, 80% of SUBARU FORESTRs from 2015 passed their MOT first time in 2026. That's based on 307 tests across the UK. The average mileage at this age is 76,358 miles.
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Mileage Analysis
76,358
Average miles
81,400
Expected for age
The average 2015 SUBARU FORESTR has 76,358 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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About the 2015 SUBARU FORESTR
The 2015 SUBARU FORESTR is a family car with a 1998cc diesel engine. 307 of these vehicles were MOT tested in 2026, making it a less common model in the UK market. It sits in the bottom 79% of 2015 cars for MOT pass rates.
With an average of 76,358 miles at 11 years old, SUBARU FORESTR owners drive about as much as the UK average.
2015 SUBARU FORESTR Fuel Costs
The 1998cc diesel engine offers a reasonable balance between performance and economy. Expect around 48 mpg in mixed driving, which works out to roughly £1,037 per year at current diesel prices of 148p per litre (based on 7,400 miles per year). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.
What does it cost to own a 2015 SUBARU FORESTR?
Total estimated annual running cost is £1,707 (£142/month), broken down as £1037 fuel, £265 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 80% pass rate. Keeping on top of servicing will help avoid surprises.
Buying a Used 2015 SUBARU FORESTR
At 11 years old, the SUBARU FORESTR 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.
Common Issues to Watch For
Based on the 2015 SUBARU FORESTR's fuel type, age, and engine size, these are the most likely problem areas to check.
DPF (Diesel Particulate Filter)
Watch outShort journeys clog the DPF. Replacement costs £1,000-£2,500. Check the DPF warning light and ask about driving patterns.
Turbo Wear
Watch outDiesel turbos work harder and wear faster. Listen for whining noises and check for oil leaks around the turbo housing.
AdBlue System
Medium riskPost-2015 diesels use AdBlue for emissions. Sensor failures and tank heater issues are common. Budget £200-£500 for repairs.
EGR Valve
Watch outExhaust Gas Recirculation valves clog with carbon deposits, causing rough running and poor economy. Cleaning costs £150-£300, replacement £300-£600.
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 SUBARU FORESTR stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| SUBARU FORESTR(2015) | 80% | £1037 | £265 | Grp 18-32 | £1707 |
| VOLKSWAGEN GOLF(2017) | 91% | £905 | £190 | Grp 12-25 | £1350-£357 |
| VAUXHALL ASTRA(2013) | 79% | £1037 | £135 | Grp 18-32 | £1727+£20 |
| AUDI A3(2015) | 88% | £905 | £135 | Grp 12-25 | £1445-£262 |
| FORD TRANSIT(2017) | 81% | £1037 | £190 | Grp 18-32 | £1632-£75 |
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.
Related Subaru Models
Explore other Subaru cars or similar models in the same category.
SUBARU IMPREZA
2005 · 1994cc Petrol
SUBARU FORESTER
2014 · 1998cc Petrol
SUBARU XV
2018 · 1995cc Petrol
VOLKSWAGEN GOLF
2017 · 1598cc Diesel
VAUXHALL ASTRA
2013 · 1700cc Diesel
AUDI A3
2015 · 1598cc Diesel
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