The 2011 STI routes 305 horsepower from the same 2.5-liter flat-4 through a 6-speed manual transmission to all four wheels, meaning a blast to 60 mph will take 4.8 seconds, and the quarter mile in 13.5 seconds at 100.6 mph, as it did in our departed long-term STI. The robust Brembo braking system, which is good for a 109-foot 60-to-0 mph stopping distance, is unchanged