In parallel with Volvo Cars' focus on biofuels and hybrid technology, energy-effiency improvements are continuously being made to the company's conventional drivelines.The special version of the Volvo C30 called Efficiency has a fuel consumption below 4.5l/100 km, and CO2 emission below 120 g/km.Additionaly, Volvo Cars will introduce a Powershift gearbox that reduces fuel consumption by about 8 pe...