Dodge has introduced the most fuel-efficient version of its new Dart sedan, the replacement for the Caliber hatchback launched earlier this year. Priced from US$19,295, the Aero has Chrysler parent Fiat's 1.4-litre 'MultiAir' intercooled turbo engine combined with several aerodynamic enhancements, including lightweight aluminum chassis components, active grille shutters, underbody aero kit, a lowered profile and low-rolling resistance tyres.