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View all Smart Fortwo reviews
Parkers overall rating: 3.5 out of 5 3.5

Of the two engines, it’s the higher-powered 90hp one that you’ll need for the lowest Smart ForTwo fuel costs. You’re looking at claimed fuel economy of up to 49.6mpg on the combined cycle if you manage to replicate Smart’s figures. Lower-powered cars with the 71hp engine are rated at up to a claimed 48.7mpg.

It’s worth noting too that thanks to low-power engines and lots of safety kit, the ForTwo shouldn’t cost the earth to insure either, making it a great first car.

Smart Fortwo 2015 speedometer

Servicing costs are low too, and Smart offers various plans to further increase transparency in this respect.

The best Smart ForTwo emissions come from the 71hp engine teamed with the six-speed dual-clutch automatic transmission, emitting 110g/km, although the range-topping 90hp version isn't far behind at 114g/km of CO2. Note that these figures will increase by 1g/km if you opt for the Prime, Prime Premium or Prime Premium Plus trims, instead of the standard Urbanshadow. 

If an automatic Smart isn't what your after then you will have to take a CO2 penalty, the five-speed manual versions emitting 4g/km more than their dual-clutch auto' equivalents. 

If you fancy emitting no CO2 at all from your Smart, the ForTwo electric is powered solely by an electric motor, meaning 0g/km.

We’re not too worried about Smart ForTwo reliability. The car seems to be built fairly well and there aren’t any cabin rattles to annoy or concern you.

Since Smart is owned by Mercedes, it’s fair to assume some of the firm’s build quality transfers over to the ForTwo.

The engines are Renault items, and seem to have fared well in other cars so far with no reported problems. The French firm has done a lot in recent years to try and dispel unreliability stories, and so far it seems to be paying off.

Estimated fuel cost per year

Fuel type Pence per litre Estimated cost per year *
Unleaded 128p £856 - £1,078 *

* The estimated fuel cost figure is based on an annual mileage of 10,000 miles and is a guide to how much this model will cost in fuel each year. It's calculated using the model's average MPG (calculated from both town centre and motorway driving) and the average fuel price from around the country. Actual fuel costs will vary based on driving style and road conditions.

Highest and lowest CO2 emissions

Engine CO2 emissions Road tax (12 months)
1.0 (71hp) Petrol,
1.0 Petrol
93 g/km (Min) £0 - £145
0.9 Petrol 119 g/km (Max) £0 - £145

Ongoing running costs

Road tax (12 months) £0 - £145
See tax rates for all versions
Insurance group 2 - 12
How much is it to insure?

Vehicle excise duty (VED) varies according to the CO2 emissions and the fuel type of the vehicle. For cars registered before 01 March 2001 it is based on engine size. For cars registered on or after 01 March 2001 the VED or road tax is based on the car's CO2 emissions.