SEAT Leon SE Dynamic TSI (2021)

Estimated running costs and MOT pass rates from 624 MOT tests in 2024.

Annual Cost

£2,003

£167/month

MOT Pass Rate

89%

Good

Road Tax

£200

Standard rate/year

Est. Insurance

Grp 12-25

1498cc Petrol

Solid Option

89% pass rate, £2,003/year to run. 7 points above average.

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Petrol1498cc5 years old624 tests34k miles avg

Annual Running Costs

Fuel (Petrol, 1498cc)

~42 mpg

£1,398

Road Tax

Standard rate (from April 2017)

£200

MOT Test

£55

Predicted Repairs

£350

Total per year£2,003

Per month£167/mo

Per week£39/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

89% MOT pass rate(Good)

0%All-model avg: 82%100%

Good reliability. Occasional issues but generally solid. That's 7 points above the average of 82% across all models in our data. It also outperforms the SEAT brand average of 85%.

89% of MOT tests on SEAT Leon SE Dynamic TSIs from 2021 ended in a pass in 2024, when they were about 3 years old. That's based on 624 tests across the UK, retests included. The average mileage recorded at those tests was 34,247 miles.

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How Does It Compare?

Rank among 2021 models2653rd of 3,336(bottom 21%)

Rank among SEAT models143rd of 310(top half)

vs average of all models+7%(82% avg)

vs 2021 models average-3%(92% avg)

vs SEAT average+4%(85% avg)

Mileage Analysis

34,247

Average miles

22,200

Expected for age

The average 2021 SEAT Leon SE Dynamic TSI had 34,247 miles on the clock at its 2024 MOT, which is well above the expected 22,200 miles for a 3-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.

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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 92%, while the 2021 model has the lowest at 89%. 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.

SEAT Leon SE Dynamic TSI by Year

Year	Pass Rate	Tests	Avg Mileage
2021	89%	624	34,247 mi
2020	92%	595	33,199 mi

Similar Cars to Consider

Ford Fiesta

2019 · 998cc Petrol

£1,630/year

91%

+2%

Volkswagen Golf

2019 · 1498cc Petrol

£1,853/year

92%

+3%

Vauxhall Corsa

2019 · 1398cc Petrol

£2,003/year

88%

-1%

Nissan Qashqai

2020 · 1598cc Petrol

£1,853/year

93%

+4%

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About the 2021 SEAT Leon SE Dynamic TSI

The 2021 SEAT Leon SE Dynamic TSI is a small family car. Our records list a 1498cc petrol engine, though engines vary between versions. 624 MOT tests were recorded on this model in 2024, making it a less common model in the UK market. It sits in the bottom 21% of 2021 models for MOT pass rate.

With an average of 34,247 miles recorded at its 2024 MOT tests, SEAT Leon SE Dynamic TSI owners cover more miles than the average driver. High-mileage examples should be checked carefully for wear on suspension, brakes, and drivetrain components.

2021 SEAT Leon SE Dynamic TSI Fuel Costs

The 1498cc petrol engine offers a reasonable balance between performance and economy. Expect around 42 mpg in mixed driving, which works out to roughly £1,398 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 SEAT Leon SE Dynamic TSI?

Total estimated annual running cost is £2,003 (£167/month), broken down as £1,398 fuel, £200 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 2021 SEAT Leon SE Dynamic TSI

At 5 years old, the SEAT Leon SE Dynamic TSI 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.

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 SEAT Leon SE Dynamic TSI 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
SEAT Leon SE Dynamic TSI(2021)	89%	£1,398	£200	Grp 12-25	£2,003
Ford Fiesta(2019)	91%	£1,175	£200	Grp 1-8	£1,630-£373
Volkswagen Golf(2019)	92%	£1,398	£200	Grp 12-25	£1,853-£150
Vauxhall Corsa(2019)	88%	£1,398	£200	Grp 8-20	£2,003same
Nissan Qashqai(2020)	93%	£1,398	£200	Grp 12-25	£1,853-£150

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 SEAT Leon SE Dynamic TSI

Is the 2021 SEAT Leon SE Dynamic TSI reliable?

Good reliability. Occasional issues but generally solid. 89% of MOT tests on 2021 SEAT Leon SE Dynamic TSIs ended in a pass, from 624 tests (DVSA MOT data for tests in 2024, retests included). That's 7 points above the average of 82% across all models in the same data.

How much does a 2021 SEAT Leon SE Dynamic TSI cost to run?

Our estimate is £2,003 a year (£167 a month): £1,398 fuel, £200 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 2021 SEAT Leon SE Dynamic TSI?

89% of 624 MOT tests on the 2021 SEAT Leon SE Dynamic TSI ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 2653rd of 3,336 models first registered in 2021 (bottom 21%).

Which year SEAT Leon SE Dynamic TSI has the best MOT pass rate?

Of the years with at least 100 tests, the 2020 SEAT Leon SE Dynamic TSI has the highest MOT pass rate at 92% and the 2021 the lowest at 89%. Newer cars usually pass more often simply because they are younger and have done fewer miles.

What is the average mileage for a 2021 SEAT Leon SE Dynamic TSI?

The average mileage recorded at MOT tests on the 2021 SEAT Leon SE Dynamic TSI is 34,247 miles, which is well above the expected 22,200 miles for a 3-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.