How much does a 2021 SMART EQ FORFOUR EXCLUSIVE cost to run?

Estimated annual running cost is £950 (£79/month), including £500 fuel, £195 road tax, £55 MOT, and £200 predicted repairs.

What is the MOT pass rate for a 2021 SMART EQ FORFOUR EXCLUSIVE?

The 2021 SMART EQ FORFOUR EXCLUSIVE has a 93% MOT pass rate based on 323 tests in 2026. This ranks 1640 out of 3373 cars from 2021.

SMART EQ FORFOUR EXCLUSIVE (2021)

Q: Is the 2021 SMART EQ FORFOUR EXCLUSIVE reliable?

Excellent reliability. Very few MOT failures. 93% of SMART EQ FORFOUR EXCLUSIVEs from 2021 passed their MOT first time in 2026, based on 323 tests. That's 11 points above the national average of 82%.

Q: What is the average mileage for a 2021 SMART EQ FORFOUR EXCLUSIVE?

The average mileage for a 2021 SMART EQ FORFOUR EXCLUSIVE is 12,586 miles, which is significantly below the expected 37,000 miles for a 5-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.

Running costs, reliability data, and common problems from 323 real MOT tests.

Annual Cost

£950

£79/month

MOT Pass Rate

93%

Excellent

Road Tax

£195

Flat rate/year

Insurance

Grp 1-8

0cc Electric

Great Choice

93% pass rate, £950/year to run. 11 points above average.

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Electric0cc5 years old323 tests13k miles avg

Annual Running Costs

Fuel (Electric, 0cc)

£500

Road Tax

Flat rate (post-2017)

£195

MOT Test

£55

Predicted Repairs

Low estimate due to excellent reliability

£200

Total per year£950

Per month£79/mo

Per week£18/wk

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

93% MOT pass rate(Excellent)

0%National avg: 82%100%

Excellent reliability. Very few MOT failures. That's 11 points above the national average of 82%. It also outperforms the SMART brand average of 80%.

At 5 years old, 93% of SMART EQ FORFOUR EXCLUSIVEs from 2021 passed their MOT first time in 2026. That's based on 323 tests across the UK. The average mileage at this age is 12,586 miles.

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How Does It Compare?

Rank among 2021 cars1640th of 3,373(top 49%)

Rank among SMART models11th of 123(top 9%)

vs national average+11%(82% avg)

vs 2021 cars average+1%(92% avg)

vs SMART average+13%(80% avg)

Mileage Analysis

12,586

Average miles

37,000

Expected for age

The average 2021 SMART EQ FORFOUR EXCLUSIVE has 12,586 miles on the clock, which is significantly below the expected 37,000 miles for a 5-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.

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Similar Cars to Consider

TESLA MODEL 3 LONG RANGE AWD

2021 · 0cc Electric

£1,095/year

88%

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JAGUAR I-PACE

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£945/year

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+3%

TESLA MODEL 3 STANDARD RANGE +

2021 · 0cc Electric

£1,095/year

88%

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TESLA MODEL 3 PERFORMANCE AWD

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About the 2021 SMART EQ FORFOUR EXCLUSIVE

The 2021 SMART EQ FORFOUR EXCLUSIVE is a electric with a 0cc electric engine. 323 of these vehicles were MOT tested in 2026, making it a less common model in the UK market. Among all cars from 2021, the average MOT pass rate is 92%, and this model beats that benchmark.

With an average of 12,586 miles at 5 years old, SMART EQ FORFOUR EXCLUSIVE owners tend to use this car less than the typical driver. Very low mileage could mean the car has been garaged or used only for short trips, which can cause its own issues like battery drain and moisture buildup.

What does it cost to own a 2021 SMART EQ FORFOUR EXCLUSIVE?

Total estimated annual running cost is £950 (£79/month), broken down as £500 fuel, £195 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 93% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

Buying a Used 2021 SMART EQ FORFOUR EXCLUSIVE

At 5 years old, the SMART EQ FORFOUR EXCLUSIVE 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 2021 SMART EQ FORFOUR EXCLUSIVE's fuel type, age, and engine size, these are the most likely problem areas to check.

Battery Degradation

Medium risk

After 5 years, expect some battery capacity loss. Check the battery health report for state of health (SoH). Below 80% significantly reduces range.

Charging Port

Medium risk

Charging connectors and ports can develop issues from regular use. Check both AC and DC charging work correctly before purchasing.

Software Updates

Medium risk

Older EVs may miss out on manufacturer software updates that improve range and features. Check the infotainment system is up to date.

12V Auxiliary Battery

Medium risk

EVs still have a standard 12V battery for accessories. These drain faster than in petrol cars and can leave you stranded if flat. Replacement is £100-£200.

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 SMART EQ FORFOUR EXCLUSIVE stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
SMART EQ FORFOUR EXCLUSIVE(2021)	93%	£500	£195	Grp 1-8	£950
TESLA MODEL 3 LONG RANGE AWD(2021)	88%	£500	£190	Grp 1-8	£1095+£145
JAGUAR I-PACE(2020)	96%	£500	£190	Grp 1-8	£945-£5
TESLA MODEL 3 STANDARD RANGE +(2021)	88%	£500	£190	Grp 1-8	£1095+£145
TESLA MODEL 3 PERFORMANCE AWD(2020)	87%	£500	£190	Grp 1-8	£1095+£145

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.