Smart Roadster Roadster (2003-2007) running costs and reliability

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Running costs rating: 4.5 out of 54.5

Written by Dan Harrison 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 53 - 55 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

Residuals promise to be strong – the sport looks, young image and quality build makes this a must-have model. Fuel and insurance costs are low thanks to the tiny engine and modest performance – fun doesn’t come much cheaper than this. Two-year warranty is a bit stingy, though.

Roadster scores remarkably well on the eco front. With an average of 123 g/km CO2 across the model line-up, its emissions are comparably low for a sports roadster. It’s worth noting that the line-up does not feature any diesel models, which typically produce less carbon dioxide than petrol engines with similar power outputs. The range is extremely frugal, averaging 55 mpg.

The funny little engine and transmission are well proven on the fortwo (neé City Coupé) and smarts have so far proven to be trouble free although some of the trim does seem rather cheap.