Reality Check · Detroit, MI
2026 GMC Sierra EV AT4 / Denali in Detroit, MI
Winter range, charging cost and how far it goes, worked out for Detroit's weather, grid and prices.
In a typical Detroit January (26°F), a Sierra EV AT4 / Denali gets an estimated 327 miles on a charge, 20% less than its 410-mile rating, and about 324 miles in the coldest week of the year (around January 22, when it averages 25°F). By June it's back to about 421. Charging at home at Michigan's average rate (23.1¢/kWh) costs about $141 a month for 38 miles a day, against $291 for a gas Sierra on the Midwest's gas. Detroit's grid (RFC Michigan) is 27% dirtier than the US average, but charging on it still makes 57% 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
398mi
At Detroit's typical October day, 53°F · 35% highway
Winter lowEstimated
324mi
January, 26°F; Jan 22–28 at 25°F · lows near 19°F
Home chargingEstimated
$141/mo
12.2¢ a mile at 23.1¢/kWh. Gas Sierra: $291/mo
Detroit's grid
0.97lb CO₂/kWh
RFC Michigan (EPA eGRID): 27% dirtier than the US, 57% less CO₂ than gas
Detroit, 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 · 29°F
18% below its 410-mile rating · coldest week 324 mi
336mi
Spring Mar–May · 48°F
5% below its rating
388mi
Summer Jun–Aug · 72°F
4% above its rating
425mi
Fall Sep–Nov · 53°FNow
About its rating
399mi
A Sierra EV AT4 / Denali's range through a Detroit yearEstimated
Each month at Detroit's 30-year normal temperature, 35% highway. 79 days a year average below freezing.
How far it goes from Detroit, on real roadsEstimated
In October, from a full charge with 10% in reserve: about 179 mi out and back, 358 mi one way (January: 294 mi). Dots are DC fast chargers by network.
Fast charging around Detroit
PlugLog's map of every public charger. Tesla-only Superchargers aren't counted.
- 156DC fast chargers within 25 mi
- 1.4 mito the nearest
- ChargePoint375 in reach
- Red E Charge157
- FLO148
- EV Connect126
- Tesla Supercharger120
Road trips in October, about, by road: Indianapolis (300 mi) and Chicago (297 mi) one way on a charge.
Questions Detroit drivers ask
How far can a Sierra EV AT4 / Denali go in a Detroit winter?
About 327 miles on a typical January day (26°F) and about 324 in the coldest week of the year (around January 22, 25°F on average), estimated from real EV drives at those temperatures. That's 20–21% below its 410-mile rating, mostly from heating the cabin and the battery. Detroit averages 79 days a year below freezing.
How much does it cost to charge a Sierra EV AT4 / Denali in Detroit?
About $141 a month at home for 38 miles a day, at Michigan's average home electricity rate of 23.1¢/kWh: about 12.2¢ a mile. A gas Sierra on the Midwest's average gas ($4.14 a gallon) costs about $291 a month for the same driving.
Can I charge a Sierra EV AT4 / Denali on a regular 120 V outlet in Detroit?
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 Detroit's grid?
Yes. Detroit's grid (RFC Michigan) is 27% dirtier than the US average, but a Sierra EV AT4 / Denali charged on it still makes 57% 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 Detroit
Sources: temperatures, 30-year normals (NOAA 1991–2020) at Detroit City Airport, MI; home electricity, EIA (Michigan, July 2026); gas, EIA weekly (the Midwest); 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.