Fastest Car: Yukon
Output: 420 Horsepower / 460 Pound-Feet
Top Speed: N/A
0-60 Time: 5.1 Seconds (est.)
GMC doesn't build sports cars (obviously), since its lineup consists entirely of trucks and SUVs. So choosing the brand's “fastest” vehicle comes down to a few deciding factors. While the GMC Sierra HD is technically the most powerful, with 445 horsepower and a whopping 910 pound-feet of torque, the new 2021 Yukon is still faster. With the optional 6.2-liter V8, the SUV produces 420 hp and 460 lb-ft of torque, and some estimates suggest the new Yukon can get to 60 mph in as quickly as 5.1 seconds. But that hasn't been confirmed.