UK electric car guide
smart forfour Battery, Range & Charging Guide UK
Battery capacity, official WLTP range, estimated real-world range, home charging, rapid charging and battery warranty for the smart forfour, 2018–2022. There are 9 versions. Figures stay on the version they belong to.
Buying a used smart forfour? Check its available battery health records, estimated range and vehicle history.
Enter the registration. The free VehicleScore comes first. Battery health records and the paid EV report are only created after you buy the check.
Choose a version
Battery capacity, range and charging for the smart forfour depend on the model year and variant. This summary is for one version. It does not blend the model into a single figure.
2022 EQ forfour Exclusive (Exclusive)
Battery capacity
17.6 kWh
Listed type: Lithium-Ion. This is not a measured usable capacity.
Official WLTP range
78 miles
Official combined test figure for this version.
Estimated real-world range
Not listed
Home charging
22 kW onboard
Type 2. Listed charging time: 357 min from 10–80% on a 2.3 kW supply; 110 min from 10–80% on a 7.5 kW supply; 75 min from 10–80% on a 11 kW supply; 37 min from 10–80% on a 22 kW supply.
Rapid charging
No confirmed vehicle limit listed
Not listed. Listed charging time: Not listed. A supply power is not the car’s maximum.
Energy use
226 Wh/mile (4.42 miles/kWh, 22.6 kWh/100 miles)
Miles per kWh and kWh per 100 miles are the same Wh per mile figure converted.
Battery warranty
8 years / 125,000 miles
New-car catalogue cover. It is not the warranty left on a used car.
Versions at a glance
Battery capacity, official WLTP range and estimated real-world range for each smart forfour version. The estimated range is the supplier’s figure, not a VehicleScore road test. A blank cell means that figure is not listed for that version.
| Model year | Variant | Battery capacity | Official WLTP range | NEDC combined | Estimated real-world range |
|---|---|---|---|---|---|
| 2022 | EQ forfour Exclusive (Exclusive) | 17.6 kWh | 78 miles | Not listed | Not listed |
| 2022 | EQ forfour Premium (Premium) | 17.6 kWh | 78 miles | Not listed | Not listed |
| 2021 | EQ forfour Exclusive (Exclusive) | 17.6 kWh | 78 miles | Not listed | Not listed |
| 2021 | EQ forfour Premium (Premium) | 17.6 kWh | 78 miles | Not listed | Not listed |
| 2020 | EQ forfour Prime Exclusive (Prime Exclusive) | 17.6 kWh | 81 miles | Not listed | Not listed |
| 2020 | EQ forfour Pulse Premium (Pulse Premium) | 17.6 kWh | 81 miles | Not listed | Not listed |
| 2019 | EQ forfour Prime Premium 22kW (Prime Premium) | 17.6 kWh | Not listed | 96 miles | Not listed |
| 2018 | EQ forfour Prime Premium+ 22kw (Prime Premium Plus) | 17.6 kWh | Not listed | 96 miles | Not listed |
| 2018 | forfour Electric Drive Prime Premium (Electric Drive Prime Premium) | 17.6 kWh | Not listed | 96 miles | Not listed |
Charging cost estimate
Estimated home-charging cost for one smart forfour version. The full charge uses that version’s listed battery capacity, which is not a measured usable capacity. Charging loss is an assumption you can change, not a test result for this car. The tariff and annual mileage are examples until you replace them.
Estimated full charge
£4.69
Estimated electricity cost per mile
6.03p
Estimated annual charging cost
£482.40
Cost per mile uses this version’s listed Wh per mile figure. A full charge is estimated at 19.56 kWh from the meter after the assumed loss. That works out at 4.42 miles per kWh before charging loss.
Charging time
A listed charging time is shown only when this version has a 10–80% time at the exact supply power you enter. Otherwise the minutes are a VehicleScore estimate from the battery capacity, that power and the charging loss. The rapid power box starts empty unless a rapid-charge limit is listed for the car. A charger’s advertised power is not filled in for you. A calculated rapid-charge time assumes constant power. It is not a real-world charging curve, and the number you type is the supply power, not confirmation of the car’s limit.
Home, 10–80%
37 min listed
Listed charging time: 37 minutes from 10–80% on a 22 kW supply. The charging-loss box does not change a listed time.
Rapid, 10–80%
Enter capacity and power
A time needs a battery capacity and a supply power you enter.
Full vehicle specifications for every version
Home charging
The onboard figure is the Type 1 or Type 2 charger listed for that version. Listed charging times are 10–80% at the supply power named beside them. A 22 kW supply does not mean the car charges at 22 kW.
| Model year | Variant | Home charge port | Onboard home charger | Listed charging time |
|---|---|---|---|---|
| 2022 | EQ forfour Exclusive (Exclusive) | Type 2 | 22 kW | 357 min on a 2.3 kW supply; 110 min on a 7.5 kW supply; 75 min on a 11 kW supply; 37 min on a 22 kW supply |
| 2022 | EQ forfour Premium (Premium) | Type 2 | 22 kW | 357 min on a 2.3 kW supply; 110 min on a 7.5 kW supply; 75 min on a 11 kW supply; 37 min on a 22 kW supply |
| 2021 | EQ forfour Exclusive (Exclusive) | Type 2 | 22 kW | 357 min on a 2.3 kW supply; 110 min on a 7.5 kW supply; 75 min on a 11 kW supply; 37 min on a 22 kW supply |
| 2021 | EQ forfour Premium (Premium) | Type 2 | 22 kW | 349 min on a 2.3 kW supply; 107 min on a 7.5 kW supply; 73 min on a 11 kW supply; 73 min on a 22 kW supply |
| 2020 | EQ forfour Prime Exclusive (Prime Exclusive) | Type 2 | 22 kW | 357 min on a 2.3 kW supply; 110 min on a 7.5 kW supply; 75 min on a 11 kW supply; 37 min on a 22 kW supply |
| 2020 | EQ forfour Pulse Premium (Pulse Premium) | Type 2 | 22 kW | 357 min on a 2.3 kW supply; 110 min on a 7.5 kW supply; 75 min on a 11 kW supply; 37 min on a 22 kW supply |
| 2019 | EQ forfour Prime Premium 22kW (Prime Premium) | Type 2 | 22 kW | 357 min on a 2.3 kW supply; 110 min on a 7.5 kW supply; 75 min on a 11 kW supply; 37 min on a 22 kW supply |
| 2018 | EQ forfour Prime Premium+ 22kw (Prime Premium Plus) | Type 2 | 22 kW | 357 min on a 2.3 kW supply; 110 min on a 7.5 kW supply; 75 min on a 11 kW supply; 37 min on a 22 kW supply |
| 2018 | forfour Electric Drive Prime Premium (Electric Drive Prime Premium) | Type 2 | 7 kW | 357 min on a 2.3 kW supply; 117 min on a 7.5 kW supply; 117 min on a 11 kW supply; 117 min on a 22 kW supply |
Rapid charging
No confirmed rapid-charge limit is listed for these versions, so this table does not invent one. The times are listed 10–80% figures at the supply power stored with them.
| Model year | Variant | Rapid charge port | Rapid-charge limit | Listed charging time |
|---|---|---|---|---|
| 2022 | EQ forfour Exclusive (Exclusive) | Not listed | Not listed | Not listed |
| 2022 | EQ forfour Premium (Premium) | Not listed | Not listed | Not listed |
| 2021 | EQ forfour Exclusive (Exclusive) | Not listed | Not listed | Not listed |
| 2021 | EQ forfour Premium (Premium) | Not listed | Not listed | Not listed |
| 2020 | EQ forfour Prime Exclusive (Prime Exclusive) | Not listed | Not listed | Not listed |
| 2020 | EQ forfour Pulse Premium (Pulse Premium) | Not listed | Not listed | Not listed |
| 2019 | EQ forfour Prime Premium 22kW (Prime Premium) | Not listed | Not listed | Not listed |
| 2018 | EQ forfour Prime Premium+ 22kw (Prime Premium Plus) | Not listed | Not listed | Not listed |
| 2018 | forfour Electric Drive Prime Premium (Electric Drive Prime Premium) | Not listed | Not listed | Not listed |
Energy efficiency
Wh per mile is the listed energy-use figure. Miles per kWh and kWh per 100 miles are that same figure converted. They are not a second test.
| Model year | Variant | Energy use |
|---|---|---|
| 2022 | EQ forfour Exclusive (Exclusive) | 226 Wh/mile (4.42 miles/kWh, 22.6 kWh/100 miles) |
| 2022 | EQ forfour Premium (Premium) | 226 Wh/mile (4.42 miles/kWh, 22.6 kWh/100 miles) |
| 2021 | EQ forfour Exclusive (Exclusive) | 226 Wh/mile (4.42 miles/kWh, 22.6 kWh/100 miles) |
| 2021 | EQ forfour Premium (Premium) | 221 Wh/mile (4.52 miles/kWh, 22.1 kWh/100 miles) |
| 2020 | EQ forfour Prime Exclusive (Prime Exclusive) | 217 Wh/mile (4.61 miles/kWh, 21.7 kWh/100 miles) |
| 2020 | EQ forfour Pulse Premium (Pulse Premium) | 217 Wh/mile (4.61 miles/kWh, 21.7 kWh/100 miles) |
| 2019 | EQ forfour Prime Premium 22kW (Prime Premium) | 217 Wh/mile (4.61 miles/kWh, 21.7 kWh/100 miles) |
| 2018 | EQ forfour Prime Premium+ 22kw (Prime Premium Plus) | 183 Wh/mile (5.46 miles/kWh, 18.3 kWh/100 miles) |
| 2018 | forfour Electric Drive Prime Premium (Electric Drive Prime Premium) | 183 Wh/mile (5.46 miles/kWh, 18.3 kWh/100 miles) |
Battery warranty
These are the new-car battery warranty years and mileage. They are not the cover remaining on a used car. Where both a time limit and a mileage limit are listed, the record does not say which one ends the cover.
| Model year | Variant | Battery warranty | Vehicle warranty |
|---|---|---|---|
| 2022 | EQ forfour Exclusive (Exclusive) | 8 years / 125,000 miles | 3 years |
| 2022 | EQ forfour Premium (Premium) | 8 years / 125,000 miles | 3 years |
| 2021 | EQ forfour Exclusive (Exclusive) | 8 years / 125,000 miles | 3 years |
| 2021 | EQ forfour Premium (Premium) | 8 years / 62,000 miles | 3 years |
| 2020 | EQ forfour Prime Exclusive (Prime Exclusive) | 8 years / 125,000 miles | 3 years |
| 2020 | EQ forfour Pulse Premium (Pulse Premium) | 8 years / 125,000 miles | 3 years |
| 2019 | EQ forfour Prime Premium 22kW (Prime Premium) | 8 years / 125,000 miles | 3 years |
| 2018 | EQ forfour Prime Premium+ 22kw (Prime Premium Plus) | 8 years / 125,000 miles | 3 years |
| 2018 | forfour Electric Drive Prime Premium (Electric Drive Prime Premium) | 8 years / 125,000 miles | 3 years |
Other vehicle specifications
Power, pace, weight and size already have their own VehicleScore pages. They are here so you can recognise the version. They are not averaged across the model.
| Model year | Variant | Output | Torque | 0–60 mph | Top speed | Kerb weight | Length × width × height |
|---|---|---|---|---|---|---|---|
| 2022 | EQ forfour Exclusive (Exclusive) | 80.5 bhp | 160 Nm | Not listed | 81 mph | 1200 kg | 3495 × 1665 × 1554 mm |
| 2022 | EQ forfour Premium (Premium) | 80.5 bhp | 160 Nm | Not listed | 81 mph | 1200 kg | 3495 × 1665 × 1554 mm |
| 2021 | EQ forfour Exclusive (Exclusive) | 80.5 bhp | 160 Nm | Not listed | 81 mph | 1200 kg | 3495 × 1665 × 1554 mm |
| 2021 | EQ forfour Premium (Premium) | 80.5 bhp | 160 Nm | 12.7 sec | 81 mph | 1200 kg | 3495 × 1665 × 1554 mm |
| 2020 | EQ forfour Prime Exclusive (Prime Exclusive) | 80.5 bhp | 160 Nm | Not listed | 81 mph | 1200 kg | 3495 × 1665 × 1554 mm |
| 2020 | EQ forfour Pulse Premium (Pulse Premium) | 80.5 bhp | 160 Nm | Not listed | 81 mph | 1200 kg | 3495 × 1665 × 1554 mm |
| 2019 | EQ forfour Prime Premium 22kW (Prime Premium) | 80.5 bhp | 160 Nm | Not listed | 81 mph | 1200 kg | 3495 × 1665 × 1554 mm |
| 2018 | EQ forfour Prime Premium+ 22kw (Prime Premium Plus) | 80.5 bhp | 160 Nm | Not listed | 81 mph | 1200 kg | 3495 × 1665 × 1554 mm |
| 2018 | forfour Electric Drive Prime Premium (Electric Drive Prime Premium) | 80.5 bhp | 160 Nm | Not listed | 81 mph | 1200 kg | 3495 × 1665 × 1554 mm |
Winter range
These specifications do not include a winter or cold-weather range for the smart forfour, and this guide does not estimate one. Cold weather shortens an electric car’s range. Compare the official WLTP figure and the supplier’s estimated real-world range for the same version.
A single winter percentage would mix versions that already have different batteries and ranges.
Buying a used smart forfour
The figures above describe catalogue versions. They do not describe the battery in one used car.
- Match the advert to the model year and variant before you compare battery capacity or range.
- Read battery capacity as the listed catalogue figure. Usable capacity is not included.
- Check the charge port and onboard home-charger rating for that version, especially on older cars with a Type 1 socket.
- Treat the warranty as the new-car catalogue cover. Age and mileage decide what is left.
- Enter the registration for history and any battery health records available for that vehicle. This page cannot show them.
Data sources
Battery capacity, official WLTP range, estimated real-world range, listed charging times, energy use and warranty figures are vehicle specifications supplied by UK Vehicle Data. Estimated real-world range is that supplier’s estimate, not a measurement by VehicleScore. Charging costs and any minute marked as calculated are VehicleScore estimates from the figures you can see. Usable battery capacity and winter range are not in this specification set, so they are not shown. Listed charging times that cannot be a 10–80% charge of a passenger car are left out.
Each row is one catalogue version. Figures are not averaged across model years or variants.
Questions about the smart forfour
What battery capacity does the smart forfour have?
Where a battery capacity is listed for the smart forfour, it is 17.6 kWh. That is the listed catalogue figure, not a measured usable capacity.
What is the official WLTP range of the smart forfour?
Official WLTP combined range differs by version: 78 miles, 81 miles. The range table shows which model year and variant each figure belongs to.
How efficient is the smart forfour?
Energy use differs by version: 183 Wh/mile, 217 Wh/mile, 221 Wh/mile, 226 Wh/mile. Miles per kWh on the page is calculated from that version’s Wh per mile figure.
What home charger does the smart forfour accept?
Onboard home-charger ratings differ by version: 7 kW, 22 kW. Use the version you are comparing, not a single figure for the whole model.
How fast can the smart forfour rapid charge?
No confirmed rapid-charge limit is listed for these smart forfour versions. Listed charging times are 10–80% at the supply power stored with that version. The highest supply power is not the car’s maximum charging speed.
What battery warranty does the smart forfour have?
The listed battery warranty is 8 years on the versions that include it. Where both a time limit and a mileage limit are stored, the record does not say which one ends the cover. This is the new-car catalogue warranty, not the cover left on a used car.
What is the winter range of the smart forfour?
These specifications do not include a winter or cold-weather range for the smart forfour, and this page does not estimate one. The range table shows the official WLTP figure, any other official test cycle that is listed, and the supplier’s estimated real-world range where those fields are filled in.
What should I check before buying a used smart forfour?
Match the advert to the model year and variant before you compare battery capacity, range or charging. These pages describe catalogue versions. They do not show one car’s battery health or the warranty cover it has left. Enter the registration to check history and any battery health records available for that vehicle.