How much does it cost to drive an electric car 100 miles?

[DiAdalynn]

Driving 100 miles in an electric car costs between $3.50 and $5.50 for most owners charging at home, based on current U.S. average electricity rates. This is roughly 60-70% cheaper than fueling a gasoline car for the same distance. However, frequent use of public DC fast charging can increase this cost to $10-$16, potentially erasing the fuel savings advantage over gas in some cases.

The total cost is determined by your vehicle's efficiency and your local electricity rate. To provide a clear comparison, here is a breakdown based on mainstream data from the U.S. Department of Energy and energy industry reports:

Cost Comparison for 100 Miles of Driving

Charging Method / Vehicle Type	Average Energy Used	Average Cost per 100 Miles	Key Influencing Factor
EV - Home Charging	28-34 kWh	$4.20 - $5.10	Local residential electricity rate
EV - Public Fast Charging	28-34 kWh	$11.20 - $16.15	Network pricing & demand fees
Gasoline Car (Avg. Compact SUV)	3.3-3.8 Gallons	$14.85 - $17.10	Regional gasoline price volatility

Why Home Charging is the Most Cost-Effective The national average residential electricity rate is approximately $0.15 per kilowatt-hour (kWh). An efficient electric car like a Tesla Model 3 or Hyundai Ioniq 6 uses about 24-27 kWh to travel 100 miles. This puts the cost at around $3.60 to $4.05. Less efficient models, like electric pickups, may use 40-45 kWh per 100 miles, raising the home charging cost to $6-$6.75. Charging during off-peak hours, where available, can reduce this cost by 30-50%.

The High Cost of Public Fast Charging Reliance Public DC fast charging stations have significantly higher rates, often combining a per-kWh fee and a session fee. Major network prices frequently range from $0.40 to $0.55 per kWh. At $0.48/kWh, a 100-mile charge for a 30-kWh vehicle costs $14.40. In high-cost states like California, this can exceed $16. For drivers without home charging, this can make the per-mile cost comparable to, or even higher than, an efficient hybrid gasoline vehicle.

Key Variables That Change Your Actual Cost

1. Electricity Rates: This is the largest variable. Rates in Hawaii ($0.44/kWh) make home charging cost over $13 for 100 miles, while in Washington state ($0.11/kWh), it's under $3.
2. Vehicle Efficiency: Always check an EV's MPGe (Miles Per Gallon Equivalent) or its kWh/100 mi rating. A 5 MPGe difference can change your cost by about $0.75 per 100 miles.
3. Driving Style & Conditions: Aggressive driving and extensive highway speeds reduce efficiency. Using climate control in extreme temperatures can increase energy consumption by 15-25%, directly increasing cost.
4. Charging Speed & Location: Level 2 public chargers (like at malls) are often cheaper than DC fast chargers but slower. Some workplaces offer free charging, which brings the cost for 100 miles to $0.

In practice, the majority of EV charging occurs at home overnight. Industry data indicates that an owner whose charging mix is 80% home and 20% public fast charging will spend an average of $5 to $7 to drive 100 miles, maintaining a substantial long-term savings over gasoline.

[DiElaina]

From my own budget tracking, it costs me about $4.30 to add 100 miles to my EV. I plug in at home every night in my garage. My utility charges 14 cents per kWh, and my car’s dashboard says I average 30 kWh per 100 miles. So that’s 30 x $0.14 = $4.20, plus a tiny bit for charging losses.

I used to spend nearly $15 for 100 miles in my old SUV. The savings are real and predictable, unlike gas prices that jumped every week. The only time it gets expensive is on road trips. Last month, a fast charger on the highway cost me $0.52 per kWh. That one 100-mile top-up was over $15—more than gas would’ve been for that leg. My strategy is to charge at home for 95% of my driving and only use fast chargers when absolutely necessary.

[DelIsabela]

Let’s break it down without the jargon. You need two numbers: how much electricity your car drinks to go 100 miles, and what you pay for a unit of that electricity.

First, find your car’s efficiency. Think of it like MPG, but for electricity. It’s usually listed as “kWh/100 mi” in the specs or on your trip meter. Most modern EVs are between 28 and 35. My family’s crossover uses about 32.

Second, check your electricity bill. Find the supply charge per kilowatt-hour (kWh). For most Americans, it’s between 12 and 18 cents. I live in the Midwest and pay 13.5 cents.

Now, multiply: 32 kWh x $0.135 = $4.32.

That’s your baseline for home charging. If your utility has a special overnight rate, you can slash that by a third. Public fast charging is a different story—the price per kWh is often triple or quadruple your home rate, so that same 100 miles could cost $13 to $16. The math is simple, but the outcome depends entirely on where you plug in.

[Julian]

As a homeowner with solar panels, my cost calculation is unique. After the initial installation, the marginal cost for me to drive 100 miles is nearly zero during sunny months. The panels produce excess energy that goes to charging my car.

When I look at my utility net-metering statement, I attribute about 30-35 kWh of my solar production to cover 100 miles of driving. If I didn’t have solar, at my local rate of $0.19/kWh, that would be $5.70 to $6.65.

In the winter, when solar production is lower, I switch to my utility’s EV-specific overnight plan, which drops the rate to $0.08/kWh between midnight and 6 AM. Setting a delayed charge for that window brings my cost down to about $2.40 to $2.80 per 100 miles. For me, the combination of solar and a time-of-use plan makes EV driving exceptionally cheap year-round, far below any gasoline equivalent.

[DeSadie]

Analyzing this from a total cost of ownership perspective, the fuel cost per 100 miles is just one data point. The consistent price stability of electricity versus volatile gasoline prices is a major financial benefit. Based on my tracking of DOE fuel price data, the national average price of gasoline has fluctuated by over $2 per gallon in the past three years, causing the cost for 100 miles in a gas car to swing between $11 and $18.

In contrast, my home electricity rate has increased by less than 10% in the same period, keeping my EV cost per 100 miles steady between $4.50 and $5.00. This predictability aids in long-term budgeting. Furthermore, while public fast charging is more expensive, it’s designed for occasional convenience, not daily use. A typical EV owner’s annual charging mix results in a blended cost well below gasoline. For a driver traveling 15,000 miles a year, the annual fuel savings often exceed $1,000, effectively offsetting other potential ownership costs. The key to maximizing savings is prioritizing home charging infrastructure.