Fiat's tiny turbocharged two cylinder won four awards in the International Engine of the Year contest, earning Best New Engine, Green Engine, Sub 1-liter Engine, and taking the overall International Engine of the Year for 2011 award.
Fiat uses the 875cc TwinAir in certain versions of its Fiat 500. In this application, the engine produces 85 horsepower but only emits 95g/km of CO2. Fiat is unlikely to offer this version of the 500 in the U.S., opting instead for its larger 1.4-liter Multiair engine.
Ferrari's new V-8 took two categories in the International Engine contest. It won for Best Performance Engine and in the Above 4-liter category. This 4.5-liter V-8 uses direct injection and very high compression to produce 560 horsepower.
Volkswagen's engine won the 1-liter to 1.4-liter engine category. The power plant uses both a supercharger and a turbocharger to eliminate lag and force induction, pushing its power output up to 185 horsepower.
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.
The only diesel engine to earn an award comes from BMW, and takes the 1.8-liter to 2-liter category. This engine uses two turbochargers, a small one to build up initial pressure, and a larger one for higher engine speeds.
The 2-liter to 2.5-liter category goes to Audi's 2.5-liter turbo. With direct injection and a turbocharger, this five-cylinder engine produces 315 horsepower, yet has achieved over 30 mpg in European fuel economy testing.