The editors of Ward's Auto gave figures on the assessment of factors, among others, power machinery, technology, observations on fuel economy and noise, vibration and hardness characteristics.
Here are 10 best engines list of Ward's Auto 2012 version:
(ten). 3.5L DOHC V-6 HEV (Infiniti M35h)
(nine). 2.0L Skyactiv DOHC I-4 (Mazda3)
( eight). 1.6L DOHC I-4 (Hyundai Accent / Kia Soul)
(seven). 2.0L turbocharged DOHC I-4 (Buick Regal GS)
(six). 5.0L DOHC V-8 (Ford Mustang Boss 302)
(five). 2.0L EcoBoost DOHC I-4 (Ford Edge)
(four). 3.6L DOHC Pentastar V-6 (300S/Jeep Chrysler Wrangler)
(three). 3.0L N55 turbocharged DOHC I-6 (BMW 335i coupe)
(two-). 2.0L N20 turbocharged DOHC I-4 (BMW Z4/528i)
(one-). 3.0L TFSI supercharged DOHC V-6 (Audi A6)
Ward Auto announced the list of 10 best engines of 2012. It seems that the list was dominated by machine-tech four-cylinder GDI engine. Of course fuel efficiency to be one important factor in the selection of the best machines.