Measuring the Electric Hummer’s Torque

In a CNET article, Guidehouse Insights explains why the new Hummer’s large torque number can be misleading

The GMC Hummer electric vehicle (EV) is expected to launch in fall 2021, it is already claiming to produce 1,000 horsepower and a massive 11,500 pound-feet of torque.

In a CNET article, Guidehouse Insights’ Sam Abuelsamid, principal research analyst, explained why the torque number may not necessarily be an accurate representation.

Regarding numbers, it comes down to what specifications are being used. GMC's large number seems to correspond to wheel torque, which is traditional motor torque multiplied through the transmission's drive ratio. 

"Most EVs have a final drive reduction ratio of about 8:1 (Tesla Model X is 8.28:1, for example)," Abuelsamid said. "With 11,500 lb-ft and 8:1, that would translate to motor torque of a bit over 1,400 lb-ft, which sounds right with 1,000 hp. [Chevy's] Bolt has a final drive of 7.05:1, while [Tesla's] Model 3 is 9:1, so 8:1 is a reasonable guess until we know more about the Hummer."

 
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