Is the 2018 TOYOTA YARIS reliable?

Excellent reliability. Very few MOT failures. 91% of TOYOTA YARISs from 2018 passed their MOT first time in 2026, based on 42,493 tests. That's 9 points above the national average of 82%.

How much does a 2018 TOYOTA YARIS cost to run?

Estimated annual running cost is £1,587 (£132/month), including £1137 fuel, £195 road tax, £55 MOT, and £200 predicted repairs.

What is the MOT pass rate for a 2018 TOYOTA YARIS?

The 2018 TOYOTA YARIS has a 91% MOT pass rate based on 42,493 tests in 2026. This ranks 261 out of 649 cars from 2018.

Which year TOYOTA YARIS is most reliable?

The 2022 TOYOTA YARIS has the highest MOT pass rate at 98%. The least reliable year is 1999 at 68%.

TOYOTA YARIS (2018)

Q: What is the average mileage for a 2018 TOYOTA YARIS?

The average mileage for a 2018 TOYOTA YARIS is 36,178 miles, which is below the expected 59,200 miles for a 8-year-old car. This suggests lighter use than average, which generally means less wear on major components.

Running costs, reliability data, and common problems from 42,493 real MOT tests.

Annual Cost

£1,587

£132/month

MOT Pass Rate

91%

Excellent

Road Tax

£195

Flat rate/year

Insurance

Grp 8-20

1349cc Hybrid

Great Choice

91% pass rate, £1587/year to run. 9 points above average.

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Hybrid1349cc8 years old42,493 tests36k miles avg

Annual Running Costs

Fuel (Hybrid, 1349cc)

~42 mpg

£1,137

Road Tax

Flat rate (post-2017)

£195

MOT Test

£55

Predicted Repairs

Low estimate due to excellent reliability

£200

Total per year£1,587

Per month£132/mo

Per week£31/wk

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

91% MOT pass rate(Excellent)

0%National avg: 82%100%

Excellent reliability. Very few MOT failures. That's 9 points above the national average of 82%. It also outperforms the TOYOTA brand average of 84%.

At 8 years old, 91% of TOYOTA YARISs from 2018 passed their MOT first time in 2026. That's based on 42,493 tests across the UK. The average mileage at this age is 36,178 miles.

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How Does It Compare?

Rank among 2018 cars261th of 649(top 40%)

Rank among TOYOTA models281th of 996(top 28%)

vs national average+9%(82% avg)

vs 2018 cars average+2%(89% avg)

vs TOYOTA average+7%(84% avg)

Mileage Analysis

36,178

Average miles

59,200

Expected for age

The average 2018 TOYOTA YARIS has 36,178 miles on the clock, which is below the expected 59,200 miles for a 8-year-old car. This suggests lighter use than average, which generally means less wear on major components.

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Best Year to Buy?

The most reliable year is the 2022 model with a 98% MOT pass rate, while the 1999 model has the lowest at 68%. The 2018 sits between the two at 91%.

TOYOTA YARIS by Year

Year	Pass Rate	Tests	Avg Mileage
2023	89%	37	35,939 mi
2022	98%	119	17,489 mi
2021	95%	632	26,407 mi
2020	94%	23,578	24,211 mi
2019	93%	41,554	29,343 mi
2018	91%	42,493	36,178 mi
2017	89%	41,160	41,679 mi
2016	89%	42,385	48,596 mi
2015	88%	46,438	55,753 mi
2014	85%	45,803	61,045 mi
2013	84%	46,724	66,676 mi
2012	83%	43,928	72,192 mi
2011	82%	25,853	75,115 mi
2010	79%	30,715	82,945 mi
2009	79%	40,160	84,624 mi
2008	75%	38,912	95,233 mi
2007	75%	36,409	96,983 mi
2006	73%	30,783	98,498 mi
2005	73%	29,754	94,076 mi
2004	72%	24,893	96,050 mi
2003	72%	20,755	97,179 mi
2002	72%	16,079	98,193 mi
2001	71%	12,710	99,203 mi
2000	70%	6,496	100,486 mi
1999	68%	3,072	98,260 mi

Similar Cars to Consider

MINI COOPER S

2019 · 1499cc Hybrid

£1,582/year

92%

+1%

AUDI Q3

2016 · 1400cc Hybrid

£1,572/year

87%

-4%

TOYOTA C-HR

2018 · 1797cc Hybrid

£1,772/year

90%

-1%

MINI COUNTRYMAN

2019 · 1499cc Hybrid

£1,582/year

93%

+2%

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About the 2018 TOYOTA YARIS

The 2018 TOYOTA YARIS is a small family car with a 1349cc hybrid engine. 42,493 of these vehicles were MOT tested in 2026, making it one of the most commonly tested cars on UK roads. Among all cars from 2018, the average MOT pass rate is 89%, and this model beats that benchmark.

With an average of 36,178 miles at 8 years old, TOYOTA YARIS owners tend to use this car less than the typical driver.

2018 TOYOTA YARIS Fuel Costs

The 1349cc hybrid engine offers a reasonable balance between performance and economy. Expect around 42 mpg in mixed driving, which works out to roughly £1,137 per year at current hybrid prices of 142p per litre (based on 7,400 miles per year). As a hybrid, real-world fuel costs will vary significantly depending on how much electric-only driving you do.

What does it cost to own a 2018 TOYOTA YARIS?

Total estimated annual running cost is £1,587 (£132/month), broken down as £1137 fuel, £195 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 91% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

TOYOTA YARIS Reliability Trend

Newer TOYOTA YARISs show better MOT pass rates than older ones, with an average improvement of 16 percentage points.

Buying a Used 2018 TOYOTA YARIS

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. If you're flexible on year, the 2022 model has the highest pass rate at 98%. With 42,493 MOT tests in our data, there's strong statistical confidence in these figures.

Common Issues to Watch For

Based on the 2018 TOYOTA YARIS's fuel type, age, and engine size, these are the most likely problem areas to check.

Hybrid Battery Health

Watch out

After 8 years, hybrid battery capacity may have reduced. A full replacement costs £2,000-£4,000, though reconditioning is cheaper at £500-£1,500.

Inverter and Power Electronics

Medium risk

The inverter converts DC to AC for the electric motor. Failures are expensive (£1,500+) but relatively rare. Listen for unusual buzzing sounds.

Regenerative Braking

Medium risk

Brake discs can corrode from reduced use (the electric motor handles most braking). Surface rust is normal but deep pitting needs attention.

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 TOYOTA YARIS stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
TOYOTA YARIS(2018)	91%	£1137	£195	Grp 8-20	£1587
MINI COOPER S(2019)	92%	£1137	£190	Grp 12-25	£1582-£5
AUDI Q3(2016)	87%	£1137	£30	Grp 8-20	£1572-£15
TOYOTA C-HR(2018)	90%	£1327	£190	Grp 18-32	£1772+£185
MINI COUNTRYMAN(2019)	93%	£1137	£190	Grp 12-25	£1582-£5

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.