Reality Check · Boston, MA
2025 GMC Sierra EV in Boston, MA
Winter range, charging cost and how far it goes, worked out for Boston's weather, grid and prices.
In a typical Boston January (30°F), a Sierra EV gets an estimated 305 miles on a charge, 22% less than its 390-mile rating, and about 302 miles in the coldest week of the year (around January 19, when it averages 29°F). By May it's back to about 386. Power is pricey in Massachusetts (30.5¢/kWh), so charging at home costs about $203 a month for 38 miles a day, still less than the $307 a gas Sierra costs on Boston's gas. On the US average grid it makes 64% less CO₂ than gas.
Partly estimated. 2 of 5 temperature bands are from 116 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 390-mile rating. Each band switches to its own drives once it has 20 from 3 drivers.
October rangeEstimated
381mi
At Boston's typical October day, 55°F · 35% highway
Winter lowEstimated
302mi
January, 30°F; Jan 19–25 at 29°F · lows near 22°F
Home chargingEstimated
$203/mo
17.5¢ a mile at 30.5¢/kWh. Gas Sierra: $307/mo
Boston's grid
0.77lb CO₂/kWh
The US average (EPA eGRID): 64% less CO₂ than gas
Boston, season by seasonEstimated
A Sierra EV's range on a full charge, averaged over each season's months (30-year normal temperatures), at 35% highway.
Winter Dec–Feb · 32°F
18% below its 390-mile rating · coldest week 302 mi
318mi
Spring Mar–May · 48°F
5% below its rating
369mi
Summer Jun–Aug · 72°F
6% below its rating
365mi
Fall Sep–Nov · 55°FNow
4% below its rating
375mi
A Sierra EV's range through a Boston yearEstimated
Each month at Boston's 30-year normal temperature, 35% highway. 46 days a year average below freezing.
How far it goes from Boston, on real roadsEstimated
In October, from a full charge with 10% in reserve: about 172 mi out and back, 343 mi one way (January: 274 mi). Dots are DC fast chargers by network.
Fast charging around Boston
PlugLog's map of every public charger. Tesla-only Superchargers aren't counted.
- 194DC fast chargers within 25 mi
- 1.6 mito the nearest
- ChargePoint414 in reach
- Tesla Supercharger205
- EVgo170
- Electrify America95
- EV Connect78
Road trips in October, about, by road: Philadelphia (335 mi) and Syracuse (331 mi) one way on a charge; Harrisburg (420 mi) with one fast stop.
Questions Boston drivers ask
How far can a Sierra EV go in a Boston winter?
About 305 miles on a typical January day (30°F) and about 302 in the coldest week of the year (around January 19, 29°F on average), estimated from real EV drives at those temperatures. That's 22–23% below its 390-mile rating, mostly from heating the cabin and the battery. Boston averages 46 days a year below freezing.
How much does it cost to charge a Sierra EV in Boston?
About $203 a month at home for 38 miles a day, at Massachusetts's average home electricity rate of 30.5¢/kWh: about 17.5¢ a mile. A gas Sierra on Boston's average gas ($4.25 a gallon) costs about $307 a month for the same driving.
Can I charge a Sierra EV on a regular 120 V outlet in Boston?
Not at 38 miles a day: a 120 V outlet adds only about 29 miles in 12 hours on an average day (23 in the coldest week). Plan on 240 V, which fills it from 10% in about 10 hours.
Is it greener to drive electric on Boston's grid?
Yes. The US average grid is about the US average, and a Sierra EV charged on it makes 64% less CO₂ than a gas Sierra.
Check it for your own address
Your street, your daily miles, any temperature on the knob.
Sierra EV Reality Check near Boston
Sources: temperatures, 30-year normals (NOAA 1991–2020) at Boston Logan International Airport, MA; home electricity, EIA (Massachusetts, July 2026); gas, EIA weekly (Boston); 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.