By Jon Reay, Sep 27, 2012

Volkswagen has revealed details of the next Golf BlueMotion and a GTI 'Concept', just hours after the unveiling of the new Mk7 model at the Paris Motor Show.

The BlueMotion, set for a UK launch next summer, improves on the current 'green' Golf's already impressive credentials – it promises 88.3mpg thanks to a range of new weight-saving measures.

Powered by a 1.6-litre 108bhp diesel engine, the BlueMotion can now - theoretically - go 970 miles on a single tank of fuel. VW says that, assuming an annual mileage of 9,300 miles, most drivers would need to refuel just 10 times per year.

At the other end of the spectrum, the GTI 'Concept' - the production version of which will go on sale from summer 2013 - comes with a 2.0-litre petrol engine throwing out 217bhp, or 227bhp with the added performance package.

Fuel economy isn't bad either, achieving 47.1mpg on the combined cycle, and the GTI comes with a new 'variable ratio steering' system that Volkswagen says will make piloting the hot Golf a more thrilling experience.