KIA STONIC MAXX S-A (2020)
Running costs, reliability data, and common problems from 348 real MOT tests.
Annual Cost
£1,555
£130/month
MOT Pass Rate
89%
Good
Road Tax
£195
Flat rate/year
Insurance
Grp 1-8
998cc Petrol
Solid Option
89% pass rate, £1555/year to run. 7 points above average.
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Annual Running Costs
~50 mpg
Flat rate (post-2017)
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
Good reliability. Occasional issues but generally solid. That's 7 points above the national average of 82%.
At 6 years old, 89% of KIA STONIC MAXX S-As from 2020 passed their MOT first time in 2026. That's based on 348 tests across the UK. The average mileage at this age is 22,927 miles.
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How Does It Compare?
Mileage Analysis
22,927
Average miles
44,400
Expected for age
The average 2020 KIA STONIC MAXX S-A has 22,927 miles on the clock, 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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Best Year to Buy?
The most reliable year is the 2019 model with a 90% MOT pass rate, while the 2020 model has the lowest at 89%. Consider a different year if reliability is a priority.
Similar Cars to Consider
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About the 2020 KIA STONIC MAXX S-A
The 2020 KIA STONIC MAXX S-A is a city car with a 998cc petrol engine. 348 of these vehicles were MOT tested in 2026, making it a less common model in the UK market. It sits in the bottom 77% of 2020 cars for MOT pass rates.
With an average of 22,927 miles at 6 years old, KIA STONIC MAXX S-A owners tend to use this car less than the typical driver.
2020 KIA STONIC MAXX S-A Fuel Costs
The modest 998cc petrol engine keeps fuel costs low, which is a real advantage for a city car. Expect around 50 mpg in mixed driving, which works out to roughly £955 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2020 KIA STONIC MAXX S-A?
Total estimated annual running cost is £1,555 (£130/month), broken down as £955 fuel, £195 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 2020 KIA STONIC MAXX S-A
At 6 years old, the KIA STONIC MAXX S-A offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost.
Common Issues to Watch For
Based on the 2020 KIA STONIC MAXX S-A's fuel type, age, and engine size, these are the most likely problem areas to check.
Coil Pack Failure
Medium riskSmaller petrol engines are prone to ignition coil failures, causing misfires and rough running. Replacement is £50-£150 per coil.
Service History
Low riskAlways 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 2020 KIA STONIC MAXX S-A stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| KIA STONIC MAXX S-A(2020) | 89% | £955 | £195 | Grp 1-8 | £1555 |
| FORD FIESTA(2018) | 90% | £955 | £190 | Grp 1-8 | £1400-£155 |
| VOLKSWAGEN GOLF(2019) | 92% | £1137 | £190 | Grp 12-25 | £1582+£27 |
| VAUXHALL CORSA(2018) | 85% | £1137 | £190 | Grp 8-20 | £1732+£177 |
| NISSAN QASHQAI(2018) | 87% | £955 | £190 | Grp 5-15 | £1550-£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.
Related Kia Models
Explore other Kia cars or similar models in the same category.
KIA SPORTAGE
2016 · 1700cc Diesel
KIA PICANTO
2018 · 998cc Petrol
KIA CEED
2012 · 1591cc Diesel
FORD FIESTA
2018 · 998cc Petrol
VOLKSWAGEN GOLF
2019 · 1498cc Petrol
VAUXHALL CORSA
2018 · 1398cc Petrol
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