Kia Rio (2015)

Estimated running costs and MOT pass rates from 18,619 MOT tests in 2024.

Annual Cost

£1,644

£137/month

MOT Pass Rate

84%

Good

Road Tax

£20

Estimated/year

Est. Insurance

Grp 5-15

1120cc Diesel

Solid Option

84% pass rate, £1,644/year to run. Close to the average across all models.

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Diesel1120cc11 years old18,619 tests61k miles avg

Annual Running Costs

Fuel (Diesel, 1120cc)

~55 mpg

£1,219

Road Tax

Estimated CO2 band

£20

MOT Test

£55

Predicted Repairs

£350

Total per year£1,644

Per month£137/mo

Per week£32/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

84% 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.

84% of MOT tests on Kia Rios from 2015 ended in a pass in 2024, when they were about 9 years old. That's based on 18,619 tests across the UK, retests included. The average mileage recorded at those tests was 60,725 miles.

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How Does It Compare?

Rank among 2015 models308th of 515(bottom half)

Rank among Kia models332nd of 471(bottom half)

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

vs 2015 models average+1%(83% avg)

vs Kia average-2%(86% avg)

Mileage Analysis

60,725

Average miles

66,600

Expected for age

The average 2015 Kia Rio had 60,725 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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Best Year to Buy?

Of the years with at least 100 tests, the 2021 model has the highest MOT pass rate at 95%, while the 2004 model has the lowest at 64%. The 2015 scores 84%. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.

Kia Rio by Year

Year	Pass Rate	Tests	Avg Mileage
2022	95%	233	24,400 mi
2021	95%	3,310	21,750 mi
2020	91%	5,121	26,035 mi
2019	89%	7,841	32,113 mi
2018	90%	9,260	40,153 mi
2017	88%	13,147	49,022 mi
2016	85%	14,178	52,518 mi
2015	84%	18,619	60,725 mi
2014	78%	19,328	70,276 mi
2013	76%	17,756	77,717 mi
2012	74%	16,466	85,239 mi
2011	72%	12,394	82,872 mi
2010	72%	11,025	87,460 mi
2009	71%	8,764	85,404 mi
2008	68%	3,800	92,973 mi
2007	67%	2,363	93,975 mi
2006	69%	1,766	94,045 mi
2005	69%	1,019	84,192 mi
2004	64%	625	68,036 mi
2003	65%	300	72,062 mi
2002	68%	184	68,384 mi
2001	67%	42	59,195 mi

Similar Cars to Consider

Ford Fiesta

2013 · 1399cc Diesel

£1,944/year

77%

-7%

Volkswagen Golf

2017 · 1598cc Diesel

£1,674/year

91%

+7%

Vauxhall Astra

2014 · 1598cc Diesel

£1,944/year

79%

-5%

Mercedes A-Class

2017 · 1461cc Diesel

£1,824/year

88%

+4%

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About the 2015 Kia Rio

The 2015 Kia Rio is a city car. Our records list a 1120cc diesel engine, though engines vary between versions. 18,619 MOT tests were recorded on this model in 2024, making it one of the most commonly tested models on UK roads. Among all models from 2015, the average MOT pass rate is 83%, and this model beats that benchmark.

With an average of 60,725 miles recorded at its 2024 MOT tests, Kia Rio owners drive about as much as the UK average.

2015 Kia Rio Fuel Costs

The modest 1120cc diesel engine keeps fuel costs low, which is a real advantage for a city car. Expect around 55 mpg in mixed driving, which works out to roughly £1,219 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 Kia Rio?

Total estimated annual running cost is £1,644 (£137/month), broken down as £1,219 fuel, £20 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 84% pass rate. Keeping on top of servicing will help avoid surprises.

Kia Rio Reliability Trend

Newer Kia Rios pass their MOT more often than older ones, by 17 percentage points on average, which is mostly down to age and wear.

Buying a Used 2015 Kia Rio

At 11 years old, the Kia Rio 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. If you're flexible on year, the 2021 model has the highest pass rate at 95%. With 18,619 MOT tests in our data, there's strong statistical confidence in these figures.

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 Kia Rio 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
Kia Rio(2015)	84%	£1,219	£20	Grp 5-15	£1,644
Ford Fiesta(2013)	77%	£1,219	£170	Grp 8-20	£1,944+£300
Volkswagen Golf(2017)	91%	£1,219	£200	Grp 12-25	£1,674+£30
Vauxhall Astra(2014)	79%	£1,219	£170	Grp 12-25	£1,944+£300
Mercedes A-Class(2017)	88%	£1,219	£200	Grp 12-25	£1,824+£180

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 Kia Rio

Is the 2015 Kia Rio reliable?

Good reliability. Occasional issues but generally solid. 84% of MOT tests on 2015 Kia Rios ended in a pass, from 18,619 tests (DVSA MOT data for tests in 2024, retests included). That's 2 points above the average of 82% across all models in the same data.

How much does a 2015 Kia Rio cost to run?

Our estimate is £1,644 a year (£137 a month): £1,219 fuel, £20 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 Kia Rio?

84% of 18,619 MOT tests on the 2015 Kia Rio ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 308th of 515 models first registered in 2015 (bottom half).

Which year Kia Rio has the best MOT pass rate?

Of the years with at least 100 tests, the 2021 Kia Rio has the highest MOT pass rate at 95% and the 2004 the lowest at 64%. Newer cars usually pass more often simply because they are younger and have done fewer miles.

What is the average mileage for a 2015 Kia Rio?

The average mileage recorded at MOT tests on the 2015 Kia Rio is 60,725 miles, which is in line with the expected 66,600 miles for a 9-year-old car, suggesting normal everyday use.