Performance, power and 0-100 km/h
2024 GMC Hummer EV SUV EV3X has the quicker recorded 0-100 km/h time at 3.5 seconds, compared with 4.5 seconds for 2025 GMC Sierra EV Denali Edition 1. 2024 GMC Hummer EV SUV EV3X has the higher listed output at 830 hp; 2025 GMC Sierra EV Denali Edition 1 is rated at 754 hp, a difference of 76 hp. The torque figures follow 2024 GMC Hummer EV SUV EV3X at 1,516 Nm and 2025 GMC Sierra EV Denali Edition 1 at 1,064 Nm. These figures describe straight-line potential only; they do not establish braking performance, ride quality, steering response or durability under repeated hard use.
Range, battery, charging and efficiency
2025 GMC Sierra EV Denali Edition 1 carries the longer listed range at 515 km, against 505 km for 2024 GMC Hummer EV SUV EV3X. 2025 GMC Sierra EV Denali Edition 1 has the lower recorded consumption at 38.8 kWh/100km; 2024 GMC Hummer EV SUV EV3X is listed at 42.1 kWh/100km. Both list the same maximum DC charging power of 350 kW. Test cycle, temperature, wheel size and charging conditions can materially affect these results, so only figures measured on the same basis should be treated as directly comparable.
Dimensions, cargo space and towing
2025 GMC Sierra EV Denali Edition 1 carries the higher towing rating at 4,354 kg, while 2024 GMC Hummer EV SUV EV3X is listed at 3,402 kg. 2025 GMC Sierra EV Denali Edition 1 is 921 mm longer overall. Exterior size is not a benefit by itself: a longer body may create useful room, but cargo shape, rear-seat space and ease of parking still require a physical inspection.
Price and overall assessment
2024 GMC Hummer EV SUV EV3X has the lower listed starting price at $98,845, compared with $99,990 for 2025 GMC Sierra EV Denali Edition 1. 2024 GMC Hummer EV SUV EV3X leads in more of the shared headline fields, but that is not a universal verdict: a buyer should weight price, performance, range and utility rather than simply count category wins. The assessment is based on the specifications shown here; it is not presented as a two-car road test.