Ford Fiesta 2015Ford has launched an updated 1.5-litre TDCi version of the Fiesta Econetic that becomes the most fuel-efficient version ever sold.

Returning 88.3mpg and emitting 82g/km CO2, the new Fiesta Econetic now emits 16g/km less CO2 than the first version launched back in 2008.

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Ford has achieved the latest eco gains on the nation’s best-selling car ever by replacing the old 1.6-litre TDCi with the new Brit-built 1.5-litre engine. It has “optimised combustion chamber design and cutting-edge turbocharger and fuel injection technology”.

Ford also fits subtle bodywork and under-body aero features, plus low-rolling resistance tyres. It has not, however, fitted a six-speed gearbox; instead it has revised gearing in the existing five-speed gearbox.

Ford Fiesta range tweaks

Ford’s tweaked other models in the Fiesta range too. The Zetec Z model is now available with the sporty 140hp 1.0-litre Ecoboost engine, and all Zetec S derivatives get a new 17-inch alloy wheel.

LED daytime running lights are standard on all versions above based Style, and there are two new colours – Magnetic metallic grey and Candy Red metallic.

DAB radio is also a no-cost option on the Zetec S.