The new Citroen Grand C4 Picasso has become the most economical car in the seven-seater MPV class, with 74.3mpg and 98g/km CO2 emissions.
The all-new MINI, featuring three-cylinder engines, will cost from £15,300 and will launch in spring 2014.
The all-new Nissan Qashqai has been revealed and it will have emissions as low as just 99g/km CO2.
The new Mercedes-Benz A 180 CDI ECO SE offers fuel economy of 78.5 mpg, with CO2 emissions of just 92 g/km.
The fuel economy of the Mazda6 has improved from 67.3mpg to 72.4mpg, with emissions dropping from 108g/km to 104g/km CO2, thanks to engine modifications.
The new Skoda Rapid and Rapid Spaceback GreenLine have official combined cycle fuel economy of 74.3mpg along with emissions of 99g/km CO2.
The new BMW 4 Series Convertible is here, and the 420d SE Convertible has a combined economy figure of 55.4 mpg, or 58.9mpg with the optional eight-speed Sport automatic gearbox, along with 133 g/km CO2 emissions, or 127g/km with the auto.
The new Hyundai i10 is available in the UK from 30 January 2014 and in SE Blue Drive 1.0 Manual form it will offer 98g/km CO2 emissions and 67.8mpg.
The new Lexus GS 300h promises class-leading benefit-in-kind tax rates of 13 per cent, thanks to segment leading CO2 emissions of 109g/km, along with 60.1mpg, from its 2.5-litre full hybrid powertrain.
The all-new Mazda3 is capable of up to 72.4mpg economy with emissions from 104g/km CO2.