The Dodge Neon SRT-4 is a sport compact car manufactured by Dodge from 2003 to 2005. A turbocharged variant of the Neon, the car was developed by DaimlerChrysler's in house PVO (Performance Vehicle Operations) tuner group. PVO was officially renamed SRT (Street and Racing Technology) in 2004. The "4" in the SRT-4's name denotes the number of cylinders of the engine. ACR (American Club Racing) and Commemorative Edition models were later introduced as well.