This modern-day version of the 1970s Dodge Challenger stays true to the original vehicle’s lines. Among the main improvements that have been made for 2011 is a new entry-level 305-hp 3.6-litre Pentastar V6. That’s 55 hp more than the old 3.5-litre V6. This V6 is at once more powerful, more economical, and more environmentally friendly. The many changes made this year explains the greatly improved driving experience.