Compared to last year, the report says that CO2 emissions are down 15.8%, new car CO2 emissions down 1.2%, and average fuel efficiency of UK-produced vehicles up to 37.7mpg.
There has been 53% fall in automotive production waste sent to landfill, and investment in 241,549 days of training for automotive industry employees.
Data shows that industry employees participate in nearly a quarter of a million training days every year.
However, SMMT members recognise a need to boost the number of female employees, which currently stand at 9.6%. The spread of female employees varies from 4% in manufacturing operations through to 35% in retail and distribution companies.
Commenting on the report's findings, SMMT chief executive Christopher Macgowan says: “SMMT's fifth sustainability report clearly shows the motor industry's commitment to improving the environmental performance in manufacturing as well as in new vehicles.
It outlines the future contribution of the industry in addressing the challenges of sustainable mobility.
It is particularly encouraging to see the levels of progress being made in reducing CO2, waste and energy, as well as the many ways employees benefit from being involved in such a competitive and progressive industry.”