Real-world EV data
GMC EV real-world range and efficiency
Every GMC EV PlugLog drivers have shared: 233 drives and 3,179 mi across 2 EVs. Their real-world efficiency, range, and how each compares with its EPA rating.
Updated · from 233 shared drives
By vehicle
Real-world range is the usable battery, measured from shared drives (or estimated from the EPA figures), × the real efficiency, at the drives' average speed (weighted by distance, like the efficiency). EPA ratings include charging losses, so vs EPA compares at the battery. Between fast charges: from one DC fast charge to the next on a road trip: 10% to 80% of the real-world range, and the time that takes at the drives' average speed, so it follows the filters.
- 2025 GMC Sierra EV4-Wheel Drive · 3 drivers · 1,698 mi
- Drives
- 116
- Real-world
- 2.05 mi/kWh
- EPA at battery
- 2.25rated 1.91
- vs EPA
- −9%
- Real-world range
- 385 mi@ 50 mph avg
- Between fast charges
- 269 mi (5h 25m)
- 2026 GMC Sierra EV AT4 / Denali (Extended Range)4-Wheel Drive · 2 drivers · 1,481 mi
- Drives
- 117
- Real-world
- 2.38 mi/kWh
- EPA at battery
- 2.37rated 2.02
- vs EPA
- +0%
- Real-world range
- 412 mi@ 40 mph avg
- Between fast charges
- 289 mi (7h 8m)
Efficiency, EV by EV
From shared drives; longer bars go further on each kWh.
GMC against other makes
Like for like: each size class's drives, make by make (mi/kWh).
standard pickup trucks
- GMC233 drives2.19
- Chevrolet526 drives2.14
Questions
- Which GMC EV is the most efficient in the real world?
- The 2026 GMC Sierra EV AT4 / Denali (Extended Range), at 2.38 mi/kWh across 117 real drives by PlugLog drivers.
- Which GMC EV has the most real-world range?
- The 2026 GMC Sierra EV AT4 / Denali (Extended Range), at about 412 miles on a full charge at its real-world efficiency.
More real-world views
Track your own EV
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Your EV's dashboard
Your own efficiency, energy added, charging spend and cost per mile, drive by drive.
Live in your car
On Android Automotive, PlugLog navigates, plans your charging stops, and records every drive and charge on its own, with this drive's efficiency on the map.
Every drive, second by second
Where the energy went, driving, regen and stopped, with the route, speed and battery level.
You vs the EPA rating
See how your EV compares with its rating, and share your drives to add to the numbers above.
Your EV belongs on this page.