Subaru Forestr (2015)

Estimated running costs and MOT pass rates from 307 MOT tests in 2024.

Annual Cost

£2,077

£173/month

MOT Pass Rate

80%

Good

Road Tax

£275

Estimated/year

Est. Insurance

Grp 18-32

1998cc Diesel

Solid Option

80% pass rate, £2,077/year to run. Close to the average across all models.

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Diesel1998cc11 years old307 tests76k miles avg

Annual Running Costs

Fuel (Diesel, 1998cc)

~48 mpg

£1,397

Road Tax

Estimated CO2 band

£275

MOT Test

£55

Predicted Repairs

£350

Total per year£2,077

Per month£173/mo

Per week£40/wk

Estimates based on 7,400 miles/year (UK average), diesel at 199.33p a litre (GOV.UK weekly average, week of 19 October 2026), GOV.UK road tax rates and repair likelihood from MOT data. Insurance not included.

Reliability Verdict

80% MOT pass rate(Good)

0%All-model avg: 82%100%

Good reliability. Occasional issues but generally solid. That's close to the average of 82% across all models in our data.

80% of MOT tests on Subaru Forestrs from 2015 ended in a pass in 2024, when they were about 9 years old. That's based on 307 tests across the UK, retests included. The average mileage recorded at those tests was 76,358 miles.

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How Does It Compare?

Rank among 2015 models407th of 515(bottom 22%)

Rank among Subaru models120th of 184(bottom half)

vs average of all models-2%(82% avg)

vs 2015 models average-3%(83% avg)

vs Subaru average-3%(83% avg)

Mileage Analysis

76,358

Average miles

66,600

Expected for age

The average 2015 Subaru Forestr had 76,358 miles on the clock at its 2024 MOT, which is in line with the expected 66,600 miles for a 9-year-old car, suggesting normal everyday use.

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Subaru Forestr by Year

Year	Pass Rate	Tests	Avg Mileage
2016	73%	62	70,420 mi
2015	80%	307	76,358 mi

Similar Cars to Consider

Volkswagen Golf

2017 · 1598cc Diesel

£1,674/year

91%

+11%

Vauxhall Astra

2013 · 1700cc Diesel

£2,227/year

79%

-1%

Audi A3

2015 · 1598cc Diesel

£1,794/year

88%

+8%

BMW 3 Series

2013 · 1995cc Diesel

£2,077/year

85%

+5%

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About the 2015 Subaru Forestr

The 2015 Subaru Forestr is a family car. Our records list a 1998cc diesel engine, though engines vary between versions. 307 MOT tests were recorded on this model in 2024, making it a less common model in the UK market. It sits in the bottom 22% of 2015 models for MOT pass rate.

With an average of 76,358 miles recorded at its 2024 MOT tests, 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 £1,397 per year with diesel at 199.33p per litre (GOV.UK weekly average, week of 19 October 2026; 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 £2,077 (£173/month), broken down as £1,397 fuel, £275 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

These are typical issues for cars of this age, fuel type and engine size, not faults recorded on this model's MOT tests. Use them as a checklist when you view one.

DPF (Diesel Particulate Filter)

Watch out

Short journeys clog the DPF. Replacement costs £1,000-£2,500. Check the DPF warning light and ask about driving patterns.

Turbo Wear

Watch out

Diesel turbos work harder and wear faster. Listen for whining noises and check for oil leaks around the turbo housing.

AdBlue System

Medium risk

Post-2015 diesels use AdBlue for emissions. Sensor failures and tank heater issues are common. Budget £200-£500 for repairs.

EGR Valve

Watch out

Exhaust Gas Recirculation valves clog with carbon deposits, causing rough running and poor economy. Cleaning costs £150-£300, replacement £300-£600.

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 Subaru Forestr stacks up against similar cars for estimated annual running costs, insurance group, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Est. Ins. Group	Total/yr
Subaru Forestr(2015)	80%	£1,397	£275	Grp 18-32	£2,077
Volkswagen Golf(2017)	91%	£1,219	£200	Grp 12-25	£1,674-£403
Vauxhall Astra(2013)	79%	£1,397	£275	Grp 18-32	£2,227+£150
Audi A3(2015)	88%	£1,219	£170	Grp 12-25	£1,794-£283
BMW 3 Series(2013)	85%	£1,397	£275	Grp 18-32	£2,077same

Estimates based on 7,400 miles/year, GOV.UK average pump prices for the week of 19 October 2026, GOV.UK road tax rates and MOT data. Insurance groups are our rough estimate from engine size, not official groups. Actual costs vary by driver, location, and usage.

Questions about the 2015 Subaru Forestr

Is the 2015 Subaru Forestr reliable?

Good reliability. Occasional issues but generally solid. 80% of MOT tests on 2015 Subaru Forestrs ended in a pass, from 307 tests (DVSA MOT data for tests in 2024, retests included). That's 2 points below the average of 82% across all models in the same data.

How much does a 2015 Subaru Forestr cost to run?

Our estimate is £2,077 a year (£173 a month): £1,397 fuel, £275 road tax, £55 MOT and £350 predicted repairs, based on 7,400 miles a year. Insurance is not included.

What is the MOT pass rate for a 2015 Subaru Forestr?

80% of 307 MOT tests on the 2015 Subaru Forestr ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 407th of 515 models first registered in 2015 (bottom 22%).

What is the average mileage for a 2015 Subaru Forestr?

The average mileage recorded at MOT tests on the 2015 Subaru Forestr is 76,358 miles, which is in line with the expected 66,600 miles for a 9-year-old car, suggesting normal everyday use.