The 2010 Dodge Avenger is a mid-size sports sedan that seats five passengers. The Avenger is available in the SXT or R/T trims. The base engine is a 173 hp 2.4L four-cylinder engine which is paired with a four-speed automatic transmission. A 2.7L V6 is available, produces 189 hp and is also linked to the four-speed automatic. On the R/T trim you can also opt for a 235 hp 3.5L V6 which hooks up to a six-speed automatic transmission. The 2010 Dodge Avenger is rated at 21 mpg in the city and up to 30 mpg on the highway.