Suzuki Swift SZ5 Dualjet MHEV (2021)

Estimated running costs and MOT pass rates from 1,279 MOT tests in 2024.

Annual Cost

£1,630

£136/month

MOT Pass Rate

95%

Excellent

Road Tax

£200

Standard rate/year

Est. Insurance

Grp 5-15

1197cc Hybrid

Great Choice

95% pass rate, £1,630/year to run. 13 points above average.

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Hybrid1197cc5 years old1,279 tests19k miles avg

Annual Running Costs

Fuel (Hybrid, 1197cc)

~50 mpg (petrol-engine estimate; hybrids usually use less)

£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

95% MOT pass rate(Excellent)

0%All-model avg: 82%100%

Excellent reliability. Very few MOT failures. That's 13 points above the average of 82% across all models in our data. It also outperforms the Suzuki brand average of 82%.

95% of MOT tests on Suzuki Swift SZ5 Dualjet MHEVs from 2021 ended in a pass in 2024, when they were about 3 years old. That's based on 1,279 tests across the UK, retests included. The average mileage recorded at those tests was 19,106 miles.

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How Does It Compare?

Rank among 2021 models779th of 3,336(top 24%)

Rank among Suzuki models60th of 305(top 20%)

vs average of all models+13%(82% avg)

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

vs Suzuki average+13%(82% avg)

Mileage Analysis

19,106

Average miles

22,200

Expected for age

The average 2021 Suzuki Swift SZ5 Dualjet MHEV had 19,106 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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Suzuki Swift SZ5 Dualjet MHEV by Year

Year	Pass Rate	Tests	Avg Mileage
2022	99%	149	16,173 mi
2021	95%	1,279	19,106 mi
2020	90%	106	21,337 mi

Similar Cars to Consider

Toyota Yaris

2019 · 1497cc Hybrid

£1,853/year

93%

-2%

MINI Cooper S

2019 · 1499cc Hybrid

£1,853/year

92%

-3%

Volvo XC40

2021 · 1470cc Hybrid

£1,853/year

93%

-2%

MINI Countryman

2019 · 1499cc Hybrid

£1,853/year

93%

-2%

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About the 2021 Suzuki Swift SZ5 Dualjet MHEV

The 2021 Suzuki Swift SZ5 Dualjet MHEV is a city car. Our records list a 1197cc hybrid engine, though engines vary between versions. 1,279 MOT tests were recorded on this model in 2024, making it a reasonably common sight on UK roads. It ranks in the top 24% of all 2021 models for MOT pass rate.

With an average of 19,106 miles recorded at its 2024 MOT tests, Suzuki Swift SZ5 Dualjet MHEV owners drive about as much as the UK average.

2021 Suzuki Swift SZ5 Dualjet MHEV Fuel Costs

The modest 1197cc hybrid engine keeps fuel costs low, which is a real advantage for a city car. Our estimate uses around 50 mpg, the figure for a petrol engine of this size, 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). As a hybrid it should use less than that, and real-world fuel costs depend a lot on how much electric-only driving you do.

What does it cost to own a 2021 Suzuki Swift SZ5 Dualjet MHEV?

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 95% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

Buying a Used 2021 Suzuki Swift SZ5 Dualjet MHEV

At 5 years old, the Suzuki Swift SZ5 Dualjet MHEV 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.

Hybrid Battery Health

Medium risk

After 5 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

Low 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.

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 Suzuki Swift SZ5 Dualjet MHEV 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
Suzuki Swift SZ5 Dualjet MHEV(2021)	95%	£1,175	£200	Grp 5-15	£1,630
Toyota Yaris(2019)	93%	£1,398	£200	Grp 12-25	£1,853+£223
MINI Cooper S(2019)	92%	£1,398	£200	Grp 12-25	£1,853+£223
Volvo XC40(2021)	93%	£1,398	£200	Grp 12-25	£1,853+£223
MINI Countryman(2019)	93%	£1,398	£200	Grp 12-25	£1,853+£223

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 Suzuki Swift SZ5 Dualjet MHEV

Is the 2021 Suzuki Swift SZ5 Dualjet MHEV reliable?

Excellent reliability. Very few MOT failures. 95% of MOT tests on 2021 Suzuki Swift SZ5 Dualjet MHEVs ended in a pass, from 1,279 tests (DVSA MOT data for tests in 2024, retests included). That's 13 points above the average of 82% across all models in the same data.

How much does a 2021 Suzuki Swift SZ5 Dualjet MHEV 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 Suzuki Swift SZ5 Dualjet MHEV?

95% of 1,279 MOT tests on the 2021 Suzuki Swift SZ5 Dualjet MHEV ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 779th of 3,336 models first registered in 2021 (top 24%).

Which year Suzuki Swift SZ5 Dualjet MHEV has the best MOT pass rate?

Of the years with at least 100 tests, the 2021 Suzuki Swift SZ5 Dualjet MHEV has the highest MOT pass rate at 95% and the 2020 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 Suzuki Swift SZ5 Dualjet MHEV?

The average mileage recorded at MOT tests on the 2021 Suzuki Swift SZ5 Dualjet MHEV is 19,106 miles, which is in line with the expected 22,200 miles for a 3-year-old car, suggesting normal everyday use.