Daihatsu Sirion Hatchback (2005-2010) running costs and reliability

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Running costs rating: 4.5 out of 54.5

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 42 - 56 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.

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Trips to the petrol station shouldn’t be too frequent, as all three engines return outstanding fuel economy – the 1.0-litre is the best, managing 57mpg. Insurance groups are 4-6 and it should be pretty cheap to service. Initial purchase prices are reasonable, but depreciation is likely to be the biggest cost.

The Sirion performs well on the eco front, with the 1.0-litre engine the cleanest of the lot, emitting 118g/km (making it cheap to tax) and returning 57mpg.

Daihatsu has a reputation for strong mechanical reliability, and as parent company Toyota has been involved with its development – this car forms the basis for the latest Yaris – outstanding reliability can be expected.