The Eyes on the Road column on Thursday incorrectly said the U.S. Focus had a turbocharged engine.
By eliminating the bulky V6-engine option in favor of a smaller, 4-cylinder turbocharged engine, Hyundai could design the car on a smaller, lighter steel frame.
When BMW redesigned its iconic M5 performance sedan in 2012, it replaced the prior generation's ten-cylinder engine with a smaller, turbocharged V-8, making the engine 25% more efficient and boosting mileage to 16 mpg from 13 combined city and highway driving.
The most efficient Cruze model, the Eco, uses a 138-horsepower, turbocharged, four-cylinder engine and a manual, six-speed transmission to achieve an EPA rating of 28 mpg city, 42 highway.
The 328d will have a four-cylinder turbocharged diesel engine that puts out 180 horsepower.
But industry buzz is around the success of a turbocharged, six-cylinder Ford engine that uses a fifth less fuel than older, larger V8 engines of similar power.
Like the standard G63 AMG it packs a wallop with its 5.5-liter twin-turbocharged V8 engine that in U.S. specs develops a frightening 544-horsepower and 560 pound-feet of torque.
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Coming in 2012, a hybrid version of the flagship Audi A8 sedan will team a 2.0-liter turbocharged gasoline engine with an electric motor generator and self-charging 1.3 kWh lithium-ion battery pack to realize an impressive 37 mpg.
And Bentley debuted its EXP 9 F concept, an SUV that will likely come standard with a 6.0-litre twin-turbocharged W12 engine.
Bugatti showed the Veyron Grand Sport Vitesse, a 1, 200-horsepower convertible packed with a 8.0-liter, quad-turbocharged W16 engine that tops out at 267 miles per hour.
The good news is that Ford will soon offer an engine worthy of the chassis, a 250-hp turbocharged four-cylinder in a performance variant called the ST.
For every mile driven, a turbocharged diesel burns 29% less fuel and spits out 20% less CO2 than a standard gasoline engine.
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