Based on longer term trends since MY 2004, truck SUVs have the largest cumulative percentage fuel economy improvement of 27 %, followed by both cars and car SUVs at 23 %. (greencarcongress.com)
The new system results in a 25 - percent fuel economy improvement over 2011 four - cylinder models. (automobilemag.com)
The benefit of this concept can be seen in fuel economy improvements averaging 12 per cent. (ausmotive.com)