On paper the Blue Drive version of this i30 makes good ecological (and tax-friendly) sense.

Its 97g/km of CO2 means no VED or London C-charge and low 13% BIK. But this i30’s official fuel figures are too far from our reality – even compared to many other carmakers’ numbers obtained by the long-derided artificial test cycle. Our first tank-to-tank figure came to 48.1mpg – good for a small hatch in mainly city driving – but that’s almost 21mpg off the official urban 68.9mpg and 28mpg shy of Hyundai’s combined 76.3mpg.

Which begs the question: what use are over-optimistic stats to the consumer?