The 2006 Chevrolet Impala is available with three new engines including the new 303
horsepower 5.3 litre V8 engine featuring Displacement on Demand (DOD) technology, which regulates between eight-cylinder and four-cylinder operation and provides up to 8 percent improved fuel economy in certain light load driving conditions.
The LT and LS models come equipped with a new 3.5 litre V6 powerplant producing 211 horsepower and 214 lb.-ft. of torque. The Impala LTZ comes standard with an all-new 3.9 litre V6 engine producing 240 horsepower and 242 lb.-ft. of torque. These new V6 engines feature variable valve timing (VVT) to optimize engine performance. In addition, the 3.5L V6 engine is available with an E85 ethanol flex fuel option that allows the vehicle to run on any combination of gasoline and/or E85 ethanol.