Biggest MPG Gainers According to edmunds.com

As automakers strive to improve their fleets’ fuel economy, Edmunds.com was curious to see which individual vehicles made the biggest improvements in fuel economy since 2008. As it turns out, the Audi A3 has made the biggest strides since the 2008 model year, climbing 38.5% to an average 29.1 MPG in 2012. Overall, the industrywide fleet of light vehicles has increased its fuel economy more than 16 percent over the same period:

Top 10 Vehicles with Biggest Jumps in Fuel Economy -- 2008 to 2012

Rank	Make	Model	2012 MPG	2008 MPG	MPG Improvement
1	Audi	A3	29.1	21.0	38.5%
2	Chevrolet	Equinox	25.1	19.0	32.0%
3	Kia	Sorento	22.2	17.0	30.4%
4	Dodge	Challenger	19.5	15.0	30.3%
5	Mercedes-Benz	SLK-Class	23.0	17.9	28.3%
6	Ford	Explorer	19.5	15.4	27.0%
7	Hyundai	Sonata	27.7	22.0	25.8%
8	Porsche	Cayenne	18.3	14.7	24.8%
9	Buick	LaCrosse	26.0	20.9	24.1%
10	Volkswagen	Passat	27.0	21.8	23.7%
	INDUSTRY		24.5	21.0	16.4%