Subaru Forester X Boxer Diesel (2011)

Estimated running costs and MOT pass rates from 37 MOT tests in 2024.

Annual Cost

£2,077

£173/month

MOT Pass Rate

89%

Good

Road Tax

£275

Estimated/year

Est. Insurance

n/a

1998cc Diesel

Solid Option

89% pass rate, £2,077/year to run. 7 points above average.

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Diesel1998cc15 years old37 tests122k miles avg

Annual Running Costs

Fuel (Diesel, 1998cc)

~48 mpg

£1,397

Road Tax

Car rate estimate; vans are taxed differently

£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

89% MOT pass rate(Good)

0%All-model avg: 82%100%

Good reliability. Occasional issues but generally solid. That's 7 points above the average of 82% across all models in our data. It also outperforms the Subaru brand average of 83%.

89% of MOT tests on Subaru Forester X Boxer Diesels from 2011 ended in a pass in 2024, when they were about 13 years old. That's based on 37 tests across the UK, retests included. The average mileage recorded at those tests was 121,697 miles.

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How Does It Compare?

Rank among 2011 models126th of 595(top 22%)

Rank among Subaru models63rd of 184(top half)

vs average of all models+7%(82% avg)

vs 2011 models average+12%(77% avg)

vs Subaru average+6%(83% avg)

Mileage Analysis

121,697

Average miles

96,200

Expected for age

The average 2011 Subaru Forester X Boxer Diesel had 121,697 miles on the clock at its 2024 MOT, which is above the expected 96,200 miles for a 13-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.

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Subaru Forester X Boxer Diesel by Year

Year	Pass Rate	Tests	Avg Mileage
2013	83%	53	98,511 mi
2012	75%	36	114,095 mi
2011	89%	37	121,697 mi

Similar Cars to Consider

Ford Transit

2013 · 2198cc Diesel

£2,641/year

74%

-15%

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About the 2011 Subaru Forester X Boxer Diesel

The 2011 Subaru Forester X Boxer Diesel is a van. Our records list a 1998cc diesel engine, though engines vary between versions. 37 MOT tests were recorded on this model in 2024, making it a rare model on UK roads. It ranks in the top 22% of all 2011 models for MOT pass rate.

With an average of 121,697 miles recorded at its 2024 MOT tests, Subaru Forester X Boxer Diesel owners cover more miles than the average driver.

2011 Subaru Forester X Boxer Diesel 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 2011 Subaru Forester X Boxer Diesel?

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 89% pass rate. Keeping on top of servicing will help avoid surprises.

Buying a Used 2011 Subaru Forester X Boxer Diesel

At 15 years old, the Subaru Forester X Boxer Diesel 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 37 tests in our data, these figures should be treated as indicative rather than definitive.

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.

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.

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 2011 Subaru Forester X Boxer Diesel 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 Forester X Boxer Diesel(2011)	89%	£1,397	£275	n/a	£2,077
Ford Transit(2013)	74%	£1,676	£410	n/a	£2,641+£564

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 2011 Subaru Forester X Boxer Diesel

Is the 2011 Subaru Forester X Boxer Diesel reliable?

Good reliability. Occasional issues but generally solid. 89% of MOT tests on 2011 Subaru Forester X Boxer Diesels ended in a pass, from 37 tests (DVSA MOT data for tests in 2024, retests included). That's 7 points above the average of 82% across all models in the same data.

How much does a 2011 Subaru Forester X Boxer Diesel 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 2011 Subaru Forester X Boxer Diesel?

89% of 37 MOT tests on the 2011 Subaru Forester X Boxer Diesel ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 126th of 595 models first registered in 2011 (top 22%).

What is the average mileage for a 2011 Subaru Forester X Boxer Diesel?

The average mileage recorded at MOT tests on the 2011 Subaru Forester X Boxer Diesel is 121,697 miles, which is above the expected 96,200 miles for a 13-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.