The 2006 Chevrolet Cobalt is a big improvement over its Cavalier predecessor, but it's still well behind the class leaders in handling dynamics, interior design, seat comfort and materials., Strong acceleration with any drivetrain, smooth and quiet ride, solid brakes, good crash test scores. , •2.2L 4-cyl. engine , •auto transmission , •Up to 22 cty/31 hwy mpg , •Traction Control