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Smart Forfour Hatchback (2004-2006) running costs and reliability

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Running costs rating: 3.5 out of 53.5

Written by David Ross Published: 6 June 2019

Miles per pound (mpp)

Reliable fuel consumption data for comparison purposes is not available for this model.
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Fuel economy

A more stringent standard for fuel economy (WLTP) was introduced from September 2017, and this model was not required to undergo that test. Its fuel economy measured under the previous test system was 41 - 64 mpg. However these figures are less likely to be achievable in real world driving and so should never be compared to another car's mpg which was measured under the newer, more realistic WLTP system.
View mpg & specs for any version

Thanks to the light weight of the Forfour and a range of small, efficient engines, it’s a frugal car to own. All the engines return impressive fuel economy and even the most powerful 1.5-litre averages 46mpg while the diesels are capable of 64mpg if fitted with the automatic gearbox. Insurance groups reasonable, starting at 4 for most models, although the top 1.5-litre Passion model is a rather high 7.

The Brabus is reasonable for a car with 177bhp and returns 42mpg, although an insurance rating of group 17 may put off younger drivers. Smart centres aren’t particularly widespread in the UK and servicing rates are on the high side, but luckily there are some excellent independent Smart specialists around who know the cars inside out.

The Forfour is an efficient small car and all the engines are economical. The manual 1.5 cdi is capable of 61mpg but frustratingly CO2 emissions are 121g/km, so it just misses out on the lower road tax rate. However, the automatic version emits 116g/km of CO2 and economy is better at 64mpg.

Smart hasn’t had an unblemished record for reliability but we’ve not heard of any major issues with the Forfour.

Ongoing running costs

Road tax £35 - £255
Insurance group 7 - 32
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