In just 3. 3 seconds, the 2022 Ford Mustang Shelby GT500 can accelerate from 0 to 60 miles per hour, reaching a top speed of 180 miles per hour. The 2013 and 2014 Shelby GT500 is the fastest Mustang GT, with a top speed of 202 mph. It is also the most expensive. Using the GT badge dates back to 1982, and it hasn’t stopped since. DxYHr.