Hyundai i20 Premium MHEV T-Gdi (2021)

Estimated running costs and MOT pass rates from 1,904 MOT tests in 2024.

Annual Cost

£1,630

£136/month

MOT Pass Rate

90%

Excellent

Road Tax

£200

Standard rate/year

Est. Insurance

Grp 1-8

998cc Petrol

Great Choice

90% pass rate, £1,630/year to run. 8 points above average.

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Petrol998cc5 years old1,904 tests21k miles avg

Annual Running Costs

Fuel (Petrol, 998cc)

~50 mpg

£1,175

Road Tax

Standard rate (from April 2017)

£200

MOT Test

£55

Predicted Repairs

Low estimate due to excellent reliability

£200

Total per year£1,630

Per month£136/mo

Per week£31/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

90% MOT pass rate(Excellent)

0%All-model avg: 82%100%

Excellent reliability. Very few MOT failures. That's 8 points above the average of 82% across all models in our data. It also outperforms the Hyundai brand average of 83%.

90% of MOT tests on Hyundai i20 Premium MHEV T-Gdis from 2021 ended in a pass in 2024, when they were about 3 years old. That's based on 1,904 tests across the UK, retests included. The average mileage recorded at those tests was 20,636 miles.

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How Does It Compare?

Rank among 2021 models2429th of 3,336(bottom half)

Rank among Hyundai models161st of 414(top half)

vs average of all models+8%(82% avg)

vs 2021 models average-2%(92% avg)

vs Hyundai average+7%(83% avg)

Mileage Analysis

20,636

Average miles

22,200

Expected for age

The average 2021 Hyundai i20 Premium MHEV T-Gdi had 20,636 miles on the clock at its 2024 MOT, which is in line with the expected 22,200 miles for a 3-year-old car, suggesting normal everyday use.

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Best Year to Buy?

Of the years with at least 100 tests, the 2020 model has the highest MOT pass rate at 91%, while the 2021 model has the lowest at 90%. Consider a different year if reliability is a priority. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.

Hyundai i20 Premium MHEV T-Gdi by Year

Year	Pass Rate	Tests	Avg Mileage
2022	92%	79	22,323 mi
2021	90%	1,904	20,636 mi
2020	91%	223	23,367 mi

Similar Cars to Consider

Ford Fiesta

2019 · 998cc Petrol

£1,630/year

91%

+1%

Volkswagen Golf

2019 · 1498cc Petrol

£1,853/year

92%

+2%

Vauxhall Corsa

2019 · 1398cc Petrol

£2,003/year

88%

-2%

Audi A3

2019 · 999cc Petrol

£1,630/year

92%

+2%

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About the 2021 Hyundai i20 Premium MHEV T-Gdi

The 2021 Hyundai i20 Premium MHEV T-Gdi is a city car. Our records list a 998cc petrol engine, though engines vary between versions. 1,904 MOT tests were recorded on this model in 2024, making it a reasonably common sight on UK roads. Among all models from 2021, the average MOT pass rate is 92%, and this model falls short of that benchmark.

With an average of 20,636 miles recorded at its 2024 MOT tests, Hyundai i20 Premium MHEV T-Gdi owners drive about as much as the UK average.

2021 Hyundai i20 Premium MHEV T-Gdi 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 £1,175 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 2021 Hyundai i20 Premium MHEV T-Gdi?

Total estimated annual running cost is £1,630 (£136/month), broken down as £1,175 fuel, £200 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 90% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

Buying a Used 2021 Hyundai i20 Premium MHEV T-Gdi

At 5 years old, the Hyundai i20 Premium MHEV T-Gdi 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

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.

Coil Pack Failure

Medium risk

Smaller petrol engines are prone to ignition coil failures, causing misfires and rough running. Replacement is £50-£150 per coil.

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 2021 Hyundai i20 Premium MHEV T-Gdi 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
Hyundai i20 Premium MHEV T-Gdi(2021)	90%	£1,175	£200	Grp 1-8	£1,630
Ford Fiesta(2019)	91%	£1,175	£200	Grp 1-8	£1,630same
Volkswagen Golf(2019)	92%	£1,398	£200	Grp 12-25	£1,853+£223
Vauxhall Corsa(2019)	88%	£1,398	£200	Grp 8-20	£2,003+£373
Audi A3(2019)	92%	£1,175	£200	Grp 1-8	£1,630same

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 2021 Hyundai i20 Premium MHEV T-Gdi

Is the 2021 Hyundai i20 Premium MHEV T-Gdi reliable?

Excellent reliability. Very few MOT failures. 90% of MOT tests on 2021 Hyundai i20 Premium MHEV T-Gdis ended in a pass, from 1,904 tests (DVSA MOT data for tests in 2024, retests included). That's 8 points above the average of 82% across all models in the same data.

How much does a 2021 Hyundai i20 Premium MHEV T-Gdi cost to run?

Our estimate is £1,630 a year (£136 a month): £1,175 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 2021 Hyundai i20 Premium MHEV T-Gdi?

90% of 1,904 MOT tests on the 2021 Hyundai i20 Premium MHEV T-Gdi ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 2429th of 3,336 models first registered in 2021 (bottom half).

Which year Hyundai i20 Premium MHEV T-Gdi has the best MOT pass rate?

Of the years with at least 100 tests, the 2020 Hyundai i20 Premium MHEV T-Gdi has the highest MOT pass rate at 91% and the 2021 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 2021 Hyundai i20 Premium MHEV T-Gdi?

The average mileage recorded at MOT tests on the 2021 Hyundai i20 Premium MHEV T-Gdi is 20,636 miles, which is in line with the expected 22,200 miles for a 3-year-old car, suggesting normal everyday use.