How much does it cost to charge a Ford Mustang Mach-E in California?

California's 12-month average rate, 32.3¢/kWh, is 79% above the U.S. average of 18.0¢/kWh, so the Ford Mustang Mach-E costs $4.50 more per 100 miles here than at the national rate.

Rates in California are rising: the latest 12-month average is 3.7% higher than in the 12 months before.

In the last 24 months both the cheapest and the most expensive month fell in spring, so the swing reflects price changes rather than a seasonal pattern: April 2025 at 27.8¢/kWh and April 2026 at 35.3¢/kWh, which moves the Ford Mustang Mach-E's monthly charging cost between $89 and $113. The latest published month, August 2026, came in at 29.8¢/kWh, 8% below the 12-month average.

Of the 5 states covered so far, California is the most expensive place to charge the Ford Mustang Mach-E; in Washington it costs $4.46 per 100 miles.

Among the 10 EVs on OutletBill, the Ford Mustang Mach-E is the 6th cheapest to charge per mile in California. The cheapest is the Tesla Model 3 at $7.86 per 100 miles; the most expensive is the Rivian R1S at $13.86.

Among the 5 small SUVs on OutletBill, the Ford Mustang Mach-E ranks 4th for charging cost in California, behind the Tesla Model Y ($8.89 per 100 miles).

At 31.4 kWh per 100 miles, the 2026 Ford Mustang Mach-E RWD uses less energy than 78% of the 321 2026 EV versions EPA has tested.

EPA rates the 2026 Mustang Mach-E RWD at the same efficiency as the 2025 version, 31.4 kWh per 100 miles, with the same 260-mile range.

Across all 6 trims of the 2026 Mustang Mach-E, cost per 100 miles in California ranges from $9.92 for the RWD Extended to $12.98 for the Rally, a difference of $374 a year at 1,016 miles a month.

EPA estimates 8 hours to charge the Mustang Mach-E RWD from empty on a 240-volt Level 2 home charger, short enough to finish overnight. At 1,016 miles a month (about 33 miles a day), a day's driving takes roughly 1 hour on a Level 2 charger.

Electricity would have to cost more than 53.5¢/kWh, 1.7 times California's rate, before the Ford Mustang Mach-E cost more per mile than the 2026 Ford Escape FWD. Put the other way, gas would have to fall below $3.05 a gallon.

Gas costs use EIA's California retail average for regular gasoline ($5.05 a gallon over the same 12 months, 40% above the U.S. average of $3.61) and the 2026 Ford Escape FWD's EPA rating of 30 mpg combined.