The 83.1mpg Skoda Fabia Estate Greenline II will cost from £13,740.
Powered by a 75bhp 1.2-litre three-cylinder turbodiesel engine, the Greenline averages 83.1mpg and emits of 89g/km.
The car has an engine stop-start system, plus brake-energy recuperation, a gearshift indicator, low-rolling-resistance tyres and a lowered chassis for improved aerodynamics.
Standard equipment includes alloy wheels, air-conditioning, an eight-speaker stereo with MP3 input, remote central locking, an alarm system and stability control.
A hatchback version of the Greenline II goes on sale in in October 2010.