The main differences are power and traction. The T5 gives you 250-horsepower, while the T6 gives you 316-horsepower (thanks to an additional supercharger). The T5 comes with FWD as standard but makes AWD an option (while the T6 only allows AWD). The T5 is rated to tow 4,000 pounds,1 while the T6 is rated to tow 5,000 pounds.1