电动汽车每英里成本：2026 年驾驶电动汽车的成本是多少？

电动汽车的每英里成本是决定其成本效益的关键因素。本文将解释如何计算这些成本，比较家用充电、公共充电和汽油动力汽车的费用，分析各种影响因素，并分享省钱技巧。

如何计算电动汽车每英里成本

要计算在家充电的成本，你需要两个关键数字：充电期间实际消耗的电量和当地每千瓦时的电价。

总充电成本 = 实际用电量 (kWh) × 电价 (美元/kWh)

然而，在实际充电过程中，由于输电线路损耗、逆变器转换和电池发热等原因，能量会损失，因此从电网汲取的电量将高于电池的额定容量。

电动汽车每英里成本 = 总充电成本 ÷ 续航里程（英里）

例如，如果一辆电动汽车充满电需要 12 美元，充满电后可以行驶 250 英里，那么充电成本约为每英里 0.048 美元。

本分析中的所有计算均采用美国居民平均电价 0.1747 美元/千瓦时。

公共充电与家用充电每英里成本对比

家用充电：

• 电价较低；充满电只需 6-18 美元，是性价比最高的充电解决方案。
• 利用夜间非高峰时段的电价，总充电成本最多可降低 30%。
• 每英里典型成本：3-7 美分。

公共充电：

• 通常每千瓦时收费 0.30 美元至 0.60 美元，具体价格取决于充电网络、地点和充电速度。
• 直流快速充电成本更高，会显著推高每英里的总成本。
• 每英里成本约为 7-16 美分。最适合公路旅行或在家无法充电时的偶尔充电。

For daily, long-term charging, prioritize home charging equipment; combined with off-peak nighttime electricity, this can significantly reduce energy costs for travel. Public charging stations tend to be expensive, and frequent use will significantly increase the cost per mile; they should only be used as an emergency backup for long-distance trips.

Electric Car Cost Per Mile vs Gasoline Car

Energy Costs: Charging an electric vehicle at home costs only $0.035–0.05 per mile; if you use public fast-charging stations over the long term, the cost rises to $0.12–0.18. Gasoline vehicle fuel costs remain stable at $0.12–0.15 per mile, with very little fluctuation.

Maintenance Costs: Electric vehicles have no engine or consumables such as motor oil, resulting in maintenance costs of $0.01–$0.02 per mile; gasoline-powered vehicles require more maintenance and frequent replacement of wear-and-tear parts, with maintenance costs of $0.03–$0.05 per mile.

Total Cost per Mile: For EVs charged at home, the total cost per mile is $0.045–$0.07; for gasoline vehicles, the total cost is $0.15–$0.20, more than double the expense.

Energy Efficiency: Electric vehicles typically convert around 85%–90% of electrical energy into movement, while gasoline vehicles convert only about 20%–30% of fuel energy into usable motion, with a significant amount of energy wasted as heat.

Price Volatility: EV operating costs fluctuate greatly based on charging methods and local electricity tariffs, while gasoline prices are generally more consistent within the same region. Over the long term, home charging usually provides the most stable and predictable operating costs.

Fuel Costs: Electricity vs. Gasoline

When comparing the overall energy costs of daily commuting, the charging costs for electric vehicles are significantly lower than the cost of refueling a traditional gasoline-powered car, and the difference in expenses between the two is quite evident.

Cost of Electric Travel:

• For every 100 miles driven, the charging cost for an electric vehicle ranges from approximately $3 to $5. If owners schedule charging during off-peak hours at night, they can also take advantage of lower electricity rates, further reducing their daily energy expenses.

Gasoline Travel Costs:

• For a gasoline-powered vehicle to travel 100 miles, the corresponding fuel cost typically ranges from $12 to $15. For heavier, less fuel-efficient vehicles—such as large SUVs and gasoline-powered pickup trucks—fuel costs for the same distance will exceed this range, adding up to a significant expense over the long term.

Factors That Affect Electric Car Cost Per Mile

• Electricity Rates: The unit price of charging is the core variable. There are significant differences between off-peak residential rates, standard residential rates, and public commercial fast-charging rates; higher electricity rates directly lead to higher per-mile costs.
• Vehicle Energy Efficiency: Vehicle energy efficiency represents the number of miles traveled per kilowatt-hour; the better the efficiency, the less electricity is consumed at the same electricity rate. Large SUVs and high-performance models consume more electricity, which increases the cost per mile.
• Driving Style: Rapid acceleration, high-speed driving, and frequent braking increase energy consumption; smooth driving and making full use of regenerative braking can effectively reduce energy consumption per mile.
• Weather Conditions: Cold weather requires battery preheating and cabin heating, while hot weather necessitates continuous use of the air conditioner; both situations significantly increase electricity consumption, driving up the cost per mile.
• Charging Methods: Home slow charging is inexpensive and results in minimal energy loss; public fast charging at commercial rates is more expensive, and the fast-charging process itself involves greater energy loss, resulting in a significantly higher overall cost per mile.

How to Lower the Cost Per Mile for Electric Vehicles

Prioritize Charging During Off-Peak Hours at Night

Avoid daytime peak electricity usage and take advantage of lower nighttime rates to charge your vehicle. This can reduce overall charging costs by up to 30%, directly lowering your cost per mile.

Reduce the Frequency of Using Public Fast Chargers

Public charging stations—especially DC fast chargers—are priced significantly higher than residential grid power. Frequent fast charging over the long term can substantially increase travel costs; whenever possible, charge at home during your daily commute.

Optimize Driving Habits to Reduce Energy Consumption

Accelerate smoothly, avoid sudden braking, and control your speed on highways. Minimize prolonged use of high-power features like air conditioning and seat heating to lower energy consumption per mile, making your trips more cost-effective at the same electricity rates.

Install a Level 2 Home EV Charger

Compared to a Level 1 charger, a Level 2 home EV charger provides faster charging, lower charging losses, and higher charging efficiency, helping reduce energy waste and lower the overall cost per mile over time.

Perform Regular Vehicle Maintenance to Maintain Low Energy Consumption

Maintain proper tire pressure, clean tires regularly, and service the air conditioning and battery cooling systems on schedule to avoid excess power consumption caused by degraded vehicle performance.

Is Driving an Electric Car Really Cheaper?

Whether an electric vehicle is cost-effective depends primarily on charging conditions, annual mileage, and the duration of vehicle ownership.

Who Benefits Most from Electric Vehicles

High-mileage drivers: Those who drive a lot each year can save significantly on energy and maintenance costs over the long term, offsetting the higher purchase price.

Homeowners with private charging facilities: Charging at home is cheaper per unit and involves no additional service fees, so the cost per mile is far lower than that of public fast charging or fuel costs for gasoline vehicles.

Residents in areas with low electricity rates: Lower base electricity rates further reduce the cost per mile, amplifying the economic advantages of electric vehicles.

Conclusion: Optimizing charging strategies and driving habits can significantly lower an EV’s cost per mile. Paired with a professional ZENCAR home charging station, you can reduce charging losses, utilize off-peak electricity rates, and maximize long-term energy savings for more efficient and affordable electric travel.

FAQ

Is “cost per mile” a better metric than “cost per kilowatt-hour”?

Compared to cost per kilowatt-hour, cost per mile directly reflects actual travel expenses, making it easier to compare electric vehicles with gasoline-powered vehicles and providing greater reference value.

How much electricity does an electric vehicle consume per mile?

Under mixed driving conditions, mainstream electric vehicles consume approximately 0.25 to 0.33 kWh per mile; electricity consumption increases significantly during extreme weather or aggressive driving.

Does driving speed affect the cost per mile of an electric vehicle?

Higher driving speeds increase aerodynamic drag and motor energy consumption, which directly raises the cost per mile for electric vehicles.

Do larger electric vehicles have a higher cost per mile?

Electric vehicles with larger bodies and heavier curb weights consume more electricity, so their cost per mile is generally higher at the same electricity rate.

Is the cost per mile the same for all electric vehicles?

Due to differences in energy efficiency, charging costs, and driving conditions across models, the cost per mile varies among electric vehicles.

电动汽车的运营成本会随着电池老化而增加吗？

电池老化会降低续航里程并增加能耗，从长远来看，这可能会略微增加每英里的成本。

太阳能电池板能否降低电动汽车的每英里成本？

是的。从长远来看，使用家用太阳能系统产生的电力为电动汽车充电可以显著降低能源成本。

电价会影响电动汽车的每英里成本吗？

是的。提高住宅或公共充电费率会增加每英里的成本，而利用非高峰时段充电则可以显著降低成本。

哪些电动汽车每英里的成本最低？

高效紧凑型电动汽车通常能耗最低，因此每英里的成本也最低。

电池容量是否决定每英里的成本？

不一定。更大的电池容量可以提供更长的续航里程，但每英里的成本更多地取决于车辆的整体能源效率，而不仅仅是电池容量。