Efficient Vehicle CO2 emission is a prime concern in relation to climate change. However the internal combustion engine running on carbon based fuels is expected to be the main propulsion concept for the next 20 years. The prime solution for the foreseeable future is the reduction of fuel consumption. The focus area ’Efficient Vehicle’ targets a 20% increase of the overall efficiency of diesel powered heavy duty vehicles. This will be realized by significant improvements in the fields of: