What we noticed as soon as we drove as little as 10 feet in the Hummer is the weight. Sure, electric vehicles are always heavier than their internal-combustion counterparts, thanks to their battery packs, but GMC has reached the rate of diminishing returns when it comes to battery size, range, and weight. The Hummer EV pickup has a ridiculously large 205-kWh battery pack, pushing the truck’s weight up to just north of 9,000 pounds. Granted, that battery can keep you on the road for 350 miles, but the similarly sized Rivian has a 135-kWh battery pack with 314 miles of range and weighs roughly 2,000 pounds less than the Hummer.
If your end-goal is range, then you’ll be happy. But when you look at what living with a battery that large means, things get a bit more dicey. The good news is that the Hummer can take advantage of ultra-fast charging with a peak rate of 300 kW. GMC says that’s quick enough to get 100 miles of range in 10 minutes. However, you’ll have to make sure the battery is conditioned to receive that quick of a charge, a process that can take up to 30 minutes. And, even with the battery properly conditioned, you won’t get a charge that fast when it’s cold. Further, you also have to find a charger capable of delivering a charge that fast. Sure, Electrify America has 350-kW chargers, but they are plagued with reliability issues and can rarely deliver a consist charge at 300 kW.
Charging at home is a slightly better scenario. The Hummer has an 11.5-kW on-board charger that converts the AC power from your house into the DC power accepted by the battery. That’s pretty quick, but it will still take 12 hours to fill up that electron bank.
However, once the rig is charged, it can be pretty entertaining to drive on road. The powertrain consists of three electric motors producing a combined 1,000 horsepower and north of 1,000 lb-ft of torque. GMC says the Hummer has 11,500 lb-ft of torque, but the company is talking about axle torque, which is not quite how we normally talk about this spec. Regardless, it’s enough to push the Hummer from 0-60 miles per hour in a GMC-estimated three seconds when the truck is placed in the Watts to Freedom mode. Otherwise known as WTF mode, this launch control system is incredibly fun, inducing maniacal laughter at every go.
It’s surreal piloting a vehicle this heavy, this quickly. It’s absolutely terrifying getting the Hummer EV to stop. Bringing 9,000-plus pounds to a stop takes much longer than most people think. In normal use you can use one-pedal driving and let the brake regen slow you down, or you can use the mechanical brakes. Either way, be prepared to leave plenty of room in front of you. If you drive a Hummer EV, your tailgating days are over.
The truck has a few other party tricks, especially when it comes to off-road capabilities. Four-wheel steering makes it almost nimble on a tight trail, reducing the turning circle to just a smidge over 37 feet. However, if you really get into trouble you can always initiate CrabWalk. Here, the truck will use its four wheel steering to move diagonally and get itself out of a tight situation. If things get really bad, the Extract drive mode will use the air suspension to raise the vehicle up to nearly 16 inches of ground clearance to get yourself out of whatever problem you’ve created for yourself. However, in both Off-Road mode and Terrain mode, ground clearance is closer to 12 inches.
It’s not all puppies and rainbows when the Hummer goes off-pavement. Sure there is a front skid plate, but this supertruck does not have a spare tire. GMC says it’s a packaging issue, and includes a tire inflation kit instead. That might be fine if you get a small puncture, but it won’t fix a rip in the sidewall, which is where most tire failures occur when driving off-road. This omission is egregiously bad.
The Hummer comes with a front and rear locker for maximum traction when the going gets rough. The rear locker engages immediately but you must push and hold the front locker button for five seconds before it locks up. Why? When drivers need a front locker, they likely need it immediately. No other truck with a front locker requires a long button push and this little quirk can be the difference between making it up a steep and rocky slope or being stuck in the middle with all momentum lost.