Accord­ing to TrueCar.com, actual fuel econ­omy num­bers increased from 21.6 mpg in July 2011 to 23.1 mpg in July 2012, edg­ing up over May 2012 which was at 23.0 mpg. A strong cor­re­la­tion between gas prices at the pump and con­sumer choices remains relevant.

Find out which man­u­fac­tur­ers showed the great­est increase in fuel economy.

	Aver­age TrueMPG			Aver­age Car TrueMPG			Aver­age Truck TrueMPG
Man­u­fac­turer	Jul-12	Jul-11	YoY	Jul-12	Jul-11	YoY	Jul-12	Jul-11	YoY
Chrysler	19.7	18.9	0.7	23.0	22.2	0.8	18.3	17.8	0.6
Ford	22.0	20.5	1.5	26.2	25.0	1.2	19.7	18.6	1.1
GM	21.1	20.6	0.6	25.3	23.8	1.6	19.1	18.9	0.1
Honda	25.0	23.2	1.8	28.2	25.8	2.3	22.3	20.6	1.6
Hyundai	27.8	25.3	2.5	29.5	26.1	3.4	23.5	22.7	0.8
Nis­san	23.2	22.7	0.5	26.0	25.5	0.5	20.1	19.8	0.3
Toy­ota	24.2	22.8	1.4	29.8	27.2	2.6	19.3	18.8	0.6
Volk­swa­gen	26.4	24.9	1.5	27.6	26.5	1.1	21.9	19.9	2.0
Indus­try	23.1	21.6	1.5	26.9	24.9	2.0	19.8	19.0	0.8