Configuration

• The Cobalt SS's engine--an inline four-cylinder (I-4)--has 16 valves, four per cylinder. The engine is a double-overhead-cam (DOHC) configuration, which means two camshafts sit on the top of the cylinder head.
  
  

Internals

• The Cobalt SS's engine has a bore (cylinder width) of 3.39 inches, a stroke (distance the piston travels inside the cylinder) of 3.39 inches and a 9.5:1 compression ratio. This engine has an overall displacement of 1,999 cubic centimeters, or 2.0 liters.
  
  

Output

• The Chevy SS 2.0-liter supercharged engine produces 205 horsepower at 5,600 rpm and 200 pound-feet of torque at 4,400 rpm.
  
  

Economy

• Because it has a four-cylinder engine, fuel economy was expected to be above average. The Cobalt Supercharged gets 23 miles per gallon in the city and 29 mpg on the highway.