3.7 Duratec V6

In the Mustang this engine gets an impressive 31 mpg while cranking out 302 hp and 276 ft. lbs. of torque. Estimates are around 23 mpg when it becomes the new base engine for Ford's F-150. Indistinguishable on the exterior from the previous model year, the 2011 models have four new engines, all mated to a six-speed automatic transmission. My '05 4.7 PowerTech V8 puts out 235 hp and 295 ft. lbs. of torque (in 2007 they added two sparkplugs per cylinder to increase output to 302 hp and 329 ft. lbs. of torque). The EPA estimated mpg for 2005 was 14/21, but my experience has been more around 12/17, so an average of 15 mpg is probably more realistic. It will be interesting to see what the real world figure is for this V6 engine in a half-ton pickup.