The Chevrolet Cobalt SS comprises three sport compact versions of the Chevrolet Cobalt that were built on the General Motors Delta platform at Lordstown Assembly in Ohio, United States. The three versions included two forced induction inline-four Ecotec engines and a third naturally aspirated engine that was later called the Cobalt Sport. SS is an abbreviation of Super Sport, a historic moniker used by Chevrolet to denote high performance upgrades that meet certain criteria. The Cobalt SS was GM's first foray into the tuner market, launching as a supercharged 2.0 L coupe in late 2004, paired only with the F35 5-speed manual transmission of Opel. The following year, a naturally aspirated 1SS model equipped with GM's new 2.4 L engine was added in both coupe and sedan body styles, including automatic and manual transmission options. Production of the supercharged coupe continued until 2007, and after a brief hiatus the SS relaunched in the second quarter of 2008 with a more efficient and powerful turbocharged 2.0 L engine producing before all Cobalt production ended in 2010. (See timeline). The Cobalt SS received generally positive reviews, particularly the turbocharged and supercharged versions. In a 2013 review, journalist Patrick George called it the best compact car ever made by General Motors, and a potential "future classic". At first release in 2004, the supercharged version was praised for its performance but drew criticism for its interior quality and exterior styling, both described as too reminiscent of its predecessor, the Cavalier. Reports surfaced in May 2009 that General Motors planned to eliminate the Cobalt SS as early as December 2009, but they proved to be untrue. Production continued but ordering options for late 2010 models were limited and production of all Cobalts ended in June 2009. The car was replaced by the Cruze, but a high performance version comparable to the Cobalt SS was never built and the Cruze ended production for the North American market in 2019. Model details Overview General Motors used five different inline-four engines in the Cobalt over the course of production, and designated three as SS models. The first was launched in 2004 as a 2005 model with a new powertrain that had debuted one year earlier on the Saturn ION Red Line. It was available as a Supercharged coupe only. The naturally aspirated 2.4 L LE5 engine was the next SS to launch in late 2005 as a 2006