Subaru WRX (2018)

Estimated running costs and MOT pass rates from 141 MOT tests in 2024.

Annual Cost

£2,413

£201/month

MOT Pass Rate

96%

Excellent

Road Tax

£200

Standard rate/year

Est. Insurance

Grp 25-38

2457cc Petrol

Great Choice

96% pass rate, £2,413/year to run. 14 points above average.

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Petrol2457cc8 years old141 tests29k miles avg

Annual Running Costs

Fuel (Petrol, 2457cc)

~30 mpg

£1,958

Road Tax

Standard rate (from April 2017)

£200

MOT Test

£55

Predicted Repairs

Low estimate due to excellent reliability

£200

Total per year£2,413

Per month£201/mo

Per week£46/wk

Estimates based on 7,400 miles/year (UK average), petrol at 174.57p 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. Cars registered from April 2017 pay the £200 standard rate, plus £440 a year for five years (from the second year) if they cost over £40,000 new (over £50,000 for electric cars).

Reliability Verdict

96% MOT pass rate(Excellent)

0%All-model avg: 82%100%

Excellent reliability. Very few MOT failures. That's 14 points above the average of 82% across all models in our data. It also outperforms the Subaru brand average of 83%.

96% of MOT tests on Subaru WRXs from 2018 ended in a pass in 2024, when they were about 6 years old. That's based on 141 tests across the UK, retests included. The average mileage recorded at those tests was 28,648 miles.

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How Does It Compare?

Rank among 2018 models83rd of 607(top 14%)

Rank among Subaru models9th of 184(top 5%)

vs average of all models+14%(82% avg)

vs 2018 models average+7%(89% avg)

vs Subaru average+13%(83% avg)

Mileage Analysis

28,648

Average miles

44,400

Expected for age

The average 2018 Subaru WRX had 28,648 miles on the clock at its 2024 MOT, which is below the expected 44,400 miles for a 6-year-old car. This suggests lighter use than average, which generally means less wear on major components.

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Subaru WRX by Year

Year	Pass Rate	Tests	Avg Mileage
2018	96%	141	28,648 mi
2017	94%	640	36,734 mi
2016	95%	703	46,500 mi
2015	92%	583	54,244 mi
2014	93%	756	55,558 mi
2012	91%	102	69,429 mi
2011	90%	251	81,809 mi
2010	92%	118	79,656 mi

Similar Cars to Consider

Volvo XC40

2020 · 2000cc Petrol

£2,086/year

93%

-3%

Jaguar F-Pace

2017 · 1997cc Petrol

£2,086/year

90%

-6%

Ford Mondeo

2016 · 2000cc Petrol

£2,361/year

87%

-9%

Volvo XC60

2016 · 1969cc Petrol

£2,361/year

86%

-10%

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About the 2018 Subaru WRX

The 2018 Subaru WRX is a large car. Our records list a 2457cc petrol engine, though engines vary between versions. 141 MOT tests were recorded on this model in 2024, making it a rare model on UK roads. It ranks in the top 14% of all 2018 models for MOT pass rate.

With an average of 28,648 miles recorded at its 2024 MOT tests, Subaru WRX owners tend to use this car less than the typical driver.

2018 Subaru WRX Fuel Costs

The 2457cc petrol engine offers a reasonable balance between performance and economy. Expect around 30 mpg in mixed driving, which works out to roughly £1,958 per year with petrol at 174.57p per litre (GOV.UK weekly average, week of 19 October 2026; based on 7,400 miles per year).

What does it cost to own a 2018 Subaru WRX?

Total estimated annual running cost is £2,413 (£201/month), broken down as £1,958 fuel, £200 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 96% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

Subaru WRX Reliability Trend

The Subaru WRX has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.

Buying a Used 2018 Subaru WRX

At 8 years old, this is a solid used buy if you find one with good service history. Depreciation has levelled off, so you won't lose much more value. Focus on condition over mileage.

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.

Timing Chain / Belt

Watch out

At 8 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.

Suspension Wear

Medium risk

Shock absorbers, springs, and anti-roll bar links typically need attention around this age. Listen for clunks over bumps and check for uneven tyre wear.

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 2018 Subaru WRX 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 WRX(2018)	96%	£1,958	£200	Grp 25-38	£2,413
Volvo XC40(2020)	93%	£1,631	£200	Grp 18-32	£2,086-£327
Jaguar F-Pace(2017)	90%	£1,631	£200	Grp 18-32	£2,086-£327
Ford Mondeo(2016)	87%	£1,631	£325	Grp 18-32	£2,361-£52
Volvo XC60(2016)	86%	£1,631	£325	Grp 18-32	£2,361-£52

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 2018 Subaru WRX

Is the 2018 Subaru WRX reliable?

Excellent reliability. Very few MOT failures. 96% of MOT tests on 2018 Subaru WRXs ended in a pass, from 141 tests (DVSA MOT data for tests in 2024, retests included). That's 14 points above the average of 82% across all models in the same data.

How much does a 2018 Subaru WRX cost to run?

Our estimate is £2,413 a year (£201 a month): £1,958 fuel, £200 road tax, £55 MOT and £200 predicted repairs, based on 7,400 miles a year. Insurance is not included.

What is the MOT pass rate for a 2018 Subaru WRX?

96% of 141 MOT tests on the 2018 Subaru WRX ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 83rd of 607 models first registered in 2018 (top 14%).

Which year Subaru WRX has the best MOT pass rate?

Of the years with at least 100 tests, the 2018 Subaru WRX has the highest MOT pass rate at 96% and the 2011 the lowest at 90%. Newer cars usually pass more often simply because they are younger and have done fewer miles.

What is the average mileage for a 2018 Subaru WRX?

The average mileage recorded at MOT tests on the 2018 Subaru WRX is 28,648 miles, which is below the expected 44,400 miles for a 6-year-old car. This suggests lighter use than average, which generally means less wear on major components.