Reality Check · Miami, FL
2026 GMC Sierra EV AT4 / Denali in Miami, FL
Winter range, charging cost and how far it goes, worked out for Miami's weather, grid and prices.
Winter barely touches range in Miami: at a typical January's 67°F, a Sierra EV AT4 / Denali gets an estimated 418 miles on a charge, about its 410-mile rating. Charging at home at Florida's average rate (15.0¢/kWh) costs about $83 a month for 38 miles a day, about a third of the $286 a gas Sierra costs on Miami's gas. On Miami's grid (FRCC All), about the US average, it makes 68% 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 range
427mi
At Miami's typical October day, 79°F · 35% highway
Winter lowEstimated
418mi
January, 67°F · lows near 61°F
Home chargingEstimated
$83/mo
7.2¢ a mile at 15.0¢/kWh. Gas Sierra: $286/mo
Miami's grid
0.78lb CO₂/kWh
FRCC All (EPA eGRID): about the US average, 68% less CO₂ than gas
Miami, 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 · 69°F
About its rating · coldest week 418 mi
420mi
Spring Mar–May · 75°F
4% above its rating
427mi
Summer Jun–Aug · 82°F
About its rating
420mi
Fall Sep–Nov · 78°FNow
4% above its rating
425mi
A Sierra EV AT4 / Denali's range through a Miami yearEstimated
Each month at Miami's 30-year normal temperature, 35% highway. No day of the year averages below freezing.
How far it goes from Miami, on real roads
In October, from a full charge with 10% in reserve: about 192 mi out and back, 385 mi one way (January: 376 mi). Dots are DC fast chargers by network.
Fast charging around Miami
PlugLog's map of every public charger. Tesla-only Superchargers aren't counted.
- 100DC fast chargers within 25 mi
- 1.2 mito the nearest
- Tesla Supercharger195 in reach
- ChargePoint97
- EVgo80
- Electrify America55
- EV Connect47
Road trips in October, about, by road: Deltona (281 mi) and Tampa (258 mi) one way on a charge; Jacksonville (409 mi) with one fast stop.
Questions Miami drivers ask
How far can a Sierra EV AT4 / Denali go in a Miami winter?
Miami's winters are mild: about 418 miles on a typical January day (67°F) and about the same in the coldest week (around January 14, 67°F), estimated from real EV drives at those temperatures. That's about its 410-mile rating.
How much does it cost to charge a Sierra EV AT4 / Denali in Miami?
About $83 a month at home for 38 miles a day, at Florida's average home electricity rate of 15.0¢/kWh: about 7.2¢ a mile. A gas Sierra on Miami's average gas ($4.08 a gallon) costs about $286 a month for the same driving.
Can I charge a Sierra EV AT4 / Denali on a regular 120 V outlet in Miami?
Not at 38 miles a day: a 120 V outlet adds only about 33 miles in 12 hours on an average day (32 in the coldest week). Plan on 240 V, which fills it from 10% in about 17 hours.
Is it greener to drive electric on Miami's grid?
Yes. Miami's grid (FRCC All) is about the US average, and a Sierra EV AT4 / Denali charged on it makes 68% 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 Miami
Sources: temperatures, 30-year normals (NOAA 1991–2020) at Miami Beach, FL; home electricity, EIA (Florida, July 2026); gas, EIA weekly (Miami); 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.