When you see RTR on a Mustang Car the RTR stands for and means "Ready To Rock".
An RTR Mustang can cost as much as $21,000.00 more than a standard Mustang car costs.
Mustangs are good and nice cars but they are also expensive and are expensive to insurance as well.
So be prepared to shell out more money for both the monthly car payments as well as car insurance for the Mustang.
RTR Vehicles is an American automotive company founded in 2009 by Vaughn Gittin Jr. involved in designing, developing, and manufacturing OEM+ performance vehicle packages for Ford's product line.