The base 2009 Saturn Sky comes standard equipped with a 2.4L I4 engine that produces 173 hp. This engine comes paired to a five-speed manual transmission with overdrive. There is a five-speed automatic transmission with overdrive is available as an option. The Environmental Protection Agency (EPA), which publishes data annually on current vehicle models, has estimated the fuel economy rating for the 2009 Saturn Sky to be 19 miles per gallon in the city and 25 miles per gallon on the highway. This creates a combined rating of 22 miles per gallon. When this same engine comes paired to the five-speed automatic transmission, the fuel economy rating changes to 19 miles per gallon in the city and 24 miles per gallon for a combined rating of about 21 miles per gallon.
The Red Line trim comes standard with a 2.0L I4 engine that produces 260 hp. This engine comes standard with the five-speed manual and has the same the five-speed automatic transmission as an option. The EPA estimates the fuel economy for this trim with this engine and transmission configuration at 19 miles per gallon in the city and 28 miles per gallon on the highway. This creates a combined fuel economy rating of about 23 miles per gallon. When this Red Line model is paired to the five-speed manual transmission, the EPA fuel economy rating changes to 19 miles per gallon in the city and 27 miles per gallon when driving on the highway. Together these figures create a combined fuel economy rating of about 22 miles per gallon.