http://www.putnam-dodge-chrysler-jeep.com/2015-challenger.htm 650-558-5612 The 2015 Dodge Challenger boasts a rare mix of talents, combining the power and attitude of a muscle car with the refinement of a luxury coupe. For 2015, the Dodge Challenger gets a major overhaul. Headlining the act is the new SRT Hellcat, which gets a supercharged V8 engine good for a rather outlandish 707 hp. On all Challengers, you'll find new styling details, a revised and upgraded interior and a new eight-speed automatic transmission.