Reality Check · Buffalo, NY
2026 GMC Sierra EV AT4 / Denali in Buffalo, NY
Winter range, charging cost and how far it goes, worked out for Buffalo's weather, grid and prices.
In a typical Buffalo January (26°F), a Sierra EV AT4 / Denali gets an estimated 325 miles on a charge, 21% less than its 410-mile rating, and about 321 miles in the coldest week of the year (around January 25, when it averages 25°F). By June it's back to about 417. Power is pricey in New York (29.9¢/kWh), so charging at home costs about $185 a month for 38 miles a day, still less than the $302 a gas Sierra costs on New York's gas. And Buffalo's grid (NPCC Upstate NY), 68% cleaner than the US average, makes it 89% less CO₂ than gas.
Partly estimated. 2 of 5 temperature bands are from 117 real drives of this model; the rest come from 1,548 real drives in EVs at each temperature (and Recurrent's winter study below freezing), applied to its 410-mile rating. Each band switches to its own drives once it has 20 from 3 drivers.
October rangeEstimated
397mi
At Buffalo's typical October day, 52°F · 35% highway
Winter lowEstimated
321mi
January, 26°F; Jan 25–31 at 25°F · lows near 18°F
Home chargingEstimated
$185/mo
16.0¢ a mile at 29.9¢/kWh. Gas Sierra: $302/mo
Buffalo's grid
0.24lb CO₂/kWh
NPCC Upstate NY (EPA eGRID): 68% cleaner than the US, 89% less CO₂ than gas
Buffalo, season by seasonEstimated
A Sierra EV AT4 / Denali's range on a full charge, averaged over each season's months (30-year normal temperatures), at 35% highway.
Winter Dec–Feb · 28°F
19% below its 410-mile rating · coldest week 321 mi
333mi
Spring Mar–May · 46°F
7% below its rating
383mi
Summer Jun–Aug · 70°F
About its rating
421mi
Fall Sep–Nov · 52°FNow
3% below its rating
397mi
A Sierra EV AT4 / Denali's range through a Buffalo yearEstimated
Each month at Buffalo's 30-year normal temperature, 35% highway. 86 days a year average below freezing.
How far it goes from Buffalo, on real roadsEstimated
In October, from a full charge with 10% in reserve: about 178 mi out and back, 357 mi one way (January: 292 mi). Dots are DC fast chargers by network.
Fast charging around Buffalo
PlugLog's map of every public charger. Tesla-only Superchargers aren't counted.
- 64DC fast chargers within 25 mi
- 3.4 mito the nearest
- ChargePoint268 in reach
- FLO205
- Tesla Supercharger134
- EV Connect115
- Red E Charge83
Road trips in October, about, by road: Baltimore (343 mi) and Poughkeepsie (332 mi) one way on a charge.
Questions Buffalo drivers ask
How far can a Sierra EV AT4 / Denali go in a Buffalo winter?
About 325 miles on a typical January day (26°F) and about 321 in the coldest week of the year (around January 25, 25°F on average), estimated from real EV drives at those temperatures. That's 21–22% below its 410-mile rating, mostly from heating the cabin and the battery. Buffalo averages 86 days a year below freezing.
How much does it cost to charge a Sierra EV AT4 / Denali in Buffalo?
About $185 a month at home for 38 miles a day, at New York's average home electricity rate of 29.9¢/kWh: about 16.0¢ a mile. A gas Sierra on New York's average gas ($4.31 a gallon) costs about $302 a month for the same driving.
Can I charge a Sierra EV AT4 / Denali on a regular 120 V outlet in Buffalo?
Not at 38 miles a day: a 120 V outlet adds only about 30 miles in 12 hours on an average day (25 in the coldest week). Plan on 240 V, which fills it from 10% in about 17 hours.
Is it greener to drive electric on Buffalo's grid?
Yes, more than most places. Buffalo's grid (NPCC Upstate NY) is 68% cleaner than the US average, so a Sierra EV AT4 / Denali charged on it makes 89% less CO₂ than a gas Sierra.
Check it for your own address
Your street, your daily miles, any temperature on the knob.
Sierra EV AT4 / Denali Reality Check near Buffalo
Sources: temperatures, 30-year normals (NOAA 1991–2020) at Buffalo, NY; home electricity, EIA (New York, July 2026); gas, EIA weekly (New York); grid CO₂, EPA eGRID 2023; cold-weather range, PlugLog's real drives and Recurrent's winter study (Nov 2025); chargers, Open Charge Map and PlugLog. Updated Oct 22, 2026.