BMW took the 1.4-liter to 1.8-liter category with its turbocharged and direct-injection 1.6-liter. BMW technologies such as Valvetronic, which use valve lift control for throttle control, helped the engine achieve its victory.
May 18, 2011 1:09 PM PDT
Photo by: Josh Miller/CNET
| Caption by: Wayne Cunningham
Conversation powered by Livefyre