The average energy used per vehicle has been cut from 6.2 to 3.2 MWh/vehicle, C02 per vehicle is down to 0.6 tonnes, from 1.3 tonnes and landfill waste per vehicle has been reduced by 78% to 14.5kg. Water use was almost halved from 6.2 m3 to 3.2 m3.
These figures have been released as a preview by the SMMT before its full report is published on Monday.
"We have embraced our responsibility and delivered a clear, clean message; the motor industry is willing, capable and open about being part of the solution to the issue of sustainable motoring," said Christopher Macgowan, SMMT chief executive.
"Our modern, high-tech motor industry should be given credit for this dramatic progress," he said.