The HHR SS combines all of the style and capability of the popular HHR family with uncompromising performance, including a turbocharged and intercooled engine that produces 260 horsepower (194 kW), unique exterior styling and an SS-specific interior. The vehicle was developed by GM Performance Division (GMPD), with a team of engineers and designers dedicated to crafting nothing but high-performance vehicles.
The '08 HHR SS was engineered by GM Performance Division and is the first SS model developed since GMPD was charged with overseeing all of the "go, stop and turn" requirements demanded of any new Chevrolet wearing the SS badge.