Charging a 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires) at home in Massachusetts

At Massachusetts's residential electricity rate of 30.06¢/kWh, a 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires) (rated 37.4 kWh per 100 miles by the EPA) costs $11.25 to drive 100 miles on home charging, against $16.02 for the same distance in a car averaging 25.5 mpg on gasoline at $4.085/gallon. That works out to 29.7% cheaper per mile than gasoline in Massachusetts — charging at home is cheaper than gas here.

What a year of driving costs

Massachusetts owners putting 15,000 annual miles on a 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires) spend about $1,688 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $715 saved annually, at this mileage.

Cost of a full charge

At Massachusetts's rate, fully covering this 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires)'s 354-mile EPA range costs about $39.84 (132.5 kWh) — the energy the EPA test actually used, not the battery's rated size.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires) in Massachusetts ranks 18,488 for cost savings versus gas — 1 being the best deal nationally. Separately, the BMW i7 xDrive50 Sedan (20 inch All-Season Tires) ranks 204 of 400 EV models for raw efficiency, and Massachusetts ranks 49 of 51 for cheapest residential electricity.

Before you install a home charger in Massachusetts

Everything above is the per-mile and per-year cost once a home charger exists — getting one installed is a separate electrical job whose price depends on your panel and wiring, not the state average used here.

Get quotes from local electricians for Level 2 charger installation in Massachusetts before deciding.

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires)'s cost in Massachusetts. Massachusetts has some of the highest residential electricity rates in the country — see the guide to why the cost varies so much by state for the full picture.