Molly Ayala
Electric vehicles (EVs) have grown in popularity, and with them, concerns about their range accuracy. Range anxiety is a common concern for prospective EV owners, who worry about their vehicle's battery life and the availability of charging stations. The EPA provides estimates for EV ranges, but real-world conditions can affect these numbers. Edmunds, for example, conducts its own EV range tests, taking into account factors like ambient temperature, driving conditions, and charging losses, which can impact an EV's actual range. With advancements in battery technology, the range of EVs is constantly improving, but it's important for consumers to understand the factors influencing range accuracy when making purchasing decisions.
| Characteristics | Values |
|---|---|
| Range | The most important characteristic for electric vehicles as it determines whether the vehicle can reach the next charging spot or complete a journey. |
| Range Testing | Edmunds drives electric vehicles on a mix of city and highway roads (60% city, 40% highway) until the battery is almost entirely empty. |
| Ambient Temperature | Ambient temperature affects the range of electric vehicles. Testing is done in Los Angeles due to its relatively consistent temperature throughout the year. |
| EPA Ratings | The Environmental Protection Agency (EPA) provides ratings for electric vehicles' city and highway ranges. |
| Real-World Testing | Edmunds' EV range testing provides a more accurate representation of electric vehicle range in real-world conditions compared to EPA estimates. |
| Charging | Home charging systems for electric vehicles typically require a 240V installation and come with additional costs. |
| Battery Technology | Improvements in battery technology have resulted in an increase in the number of electric vehicles offering longer ranges. |
| Consumption | Electric vehicle consumption increases significantly with higher speeds, unlike gas-powered vehicles. |
| Efficiency | Electric vehicles recapture energy when decelerating, which contributes to their efficiency in low- and variable-speed scenarios. |
| Customer Considerations | Range is a critical factor for both EV shoppers and owners when deciding which vehicle to purchase. |
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Range anxiety
The range of an electric vehicle is an important factor in its purchase. The range of an EV is heavily scrutinized because it can travel, on average, barely half the distance of a gas-powered vehicle before requiring a charge. This, combined with the fact that gas pumps outnumber fast chargers, can cause range anxiety. Range anxiety is the concern that an EV won't have enough battery capacity to complete a journey. This is a valid concern given the work-in-progress state of charging networks in North America. In fact, 68% of EV shoppers said range was a big factor in their consideration of EVs, and 63% of EV owners cited range as a big factor in their decision.
The range of an EV depends on several factors, including ambient temperature, driving speed, driving style, and more. For instance, the range of an EV decreases in cold temperatures due to the lack of a heat pump. Similarly, driving faster than 65 mph, using the air conditioning, or the heater, and aggressive acceleration can all cause the range to drop. Edmunds, an EV testing company, takes these factors into account and drives the vehicles on a mix of city and highway roads until the battery is almost entirely empty. The total distance traveled is then multiplied by a correction factor determined by the EPA to reflect what drivers can expect in the real world.
However, it is important to note that the EPA's testing process is laboratory-based, and real-world conditions may vary. Edmunds aims for a mix of 60% city driving and 40% highway, assuming that most EV owners will spend more time in stop-and-go traffic. Additionally, the range of an EV can vary depending on the trim level, with some trims offering better ranges than others. It is also worth noting that, unlike gas-powered vehicles, an EV's consumption increases dramatically as speeds rise due to the lack of multiple gears in most models.
To address range anxiety, it is recommended to have a home charging system. This typically requires a 240V home installation, as a regular household outlet may not be sufficient. While adding a home charging system incurs an additional cost, it can provide peace of mind and make EV ownership more convenient. Overall, while the listed range of electric vehicles may not always be accurate, there are ways to improve range anxiety and make EV ownership more feasible, especially as battery technology continues to improve.
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EPA ratings
The Environmental Protection Agency (EPA) determines the range of an electric vehicle by running it through a series of tests or 'schedules' on a dynamometer that simulate real-world driving conditions. The two key tests are the Urban Dynamometer Driving Schedule (UDDS) and the Highway Fuel Economy Test Driving Schedule (HWFET), which stand in for city and highway driving, respectively.
The EPA's methodology involves fully charging a vehicle and parking it overnight. The following day, the vehicle is driven on a dynamometer over successive simulated city and highway routes until the battery is depleted. The total distance travelled is then multiplied by a correction factor that the EPA has determined will more accurately reflect what drivers can expect to achieve in the real world. This correction factor is always less than 1 but greater than 0, and is determined by the number of drive cycles a vehicle is tested on.
The EPA recognises that its tests are performed at room temperature in a laboratory, which cannot account for the variety of weather and environmental conditions that EV drivers might encounter in the real world. As such, the EPA considers the original mileage number to be artificially high and multiplies the preliminary numbers by 0.7 and then weights them for highway (55%) and city (45%) driving to achieve the official range number.
The EPA's ratings are prominently displayed on the window sticker of the vehicle, with the big number being MPGe (the "e" is for "equivalent"), while kilowatt-hour per 100 miles is listed in smaller print. The EPA considers one gallon of gasoline to be the energy equivalent of 33.7 kilowatt-hours of electricity. For example, if a car uses 33.7 kilowatt-hours of electricity to travel 75 miles, then it receives a rating of 75 MPGe.
It is important to note that your real-world EV driving range might be greater or less than a vehicle's official EPA rating. Extreme heat and cold, hilly terrain, and higher cruising speeds can all impact how far an electric vehicle travels on a single charge.
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Real-world testing
The testing also takes into account ambient temperature, as it significantly impacts the range of EVs. For example, cold temperatures can reduce the range due to the lack of a heat pump. Therefore, Edmunds conducts its tests in Los Angeles, known for its temperate climate, to maintain consistent testing conditions. They also report the daily average temperature during the test for transparency.
Another critical aspect of real-world testing is the correction factor applied by the Environmental Protection Agency (EPA). After laboratory testing, the EPA uses a correction factor to adjust the results and make them more applicable to real-world driving conditions. This factor is always less than 1 but greater than 0 and is determined by the number of drive cycles tested. While the EPA's process is laboratory-based, Edmunds focuses on real-world testing to provide a more accurate representation of EV ranges.
Edmunds' real-world testing has yielded valuable insights into the performance of various EVs. For instance, the 2025 GMC Sierra EV Denali impressed with a 507-mile range on a single charge. Additionally, the Hyundai Ioniq 6's entry-level model fell short of expectations, failing to reach 300 miles on a full charge. On the other hand, the Tesla Model 3 Long Range impressed with a 310-mile range, earning a spot on the 2025 10Best Cars list.
In conclusion, real-world testing of electric vehicles is a meticulous process that involves driving EVs in diverse conditions, accounting for temperature variations, and applying correction factors to ensure accuracy. Edmunds' testing methodology provides a more realistic representation of EV ranges, helping consumers make informed decisions about their electric vehicle purchases.
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Charging systems
Electric vehicle charging systems are classified by the rate at which the batteries are charged. The three main categories or types of charging are Trickle Charge, AC Charge, and DC Charge.
Trickle charging is the slowest method of charging your EV at home, using a standard (three-prong) 220V plug. It is only recommended in urgent cases and with consultation with electricity providers. AC charging is faster and can be done via a wallbox installed at home or through AC public charging. DC charging is the fastest way to charge an EV at a public DC fast-charging station with power from 50 kW and above. DC charging can top up a battery from 20 to 80% in approximately 40 minutes.
Within these categories, there are different levels of charging. Level 1 charging uses a 120V receptacle, similar to a regular household outlet. Level 2 chargers allow the EV to be connected to a 240V receptacle and are available up to around 20 kW. Level 2 chargers can fully recharge most EVs overnight. Level 3 charging, also known as DCFC charging, uses DC to charge the EV battery directly without needing to go through the onboard AC battery charger. DCFC chargers are significantly more expensive than Level 1 or 2 chargers and are usually limited to commercial use.
There are also different types of connectors for charging EVs. CHAdeMO and CCS (Combined Charging System) are the most commonly used connectors for fast charging. However, these connectors are not interchangeable, so it is important to know which connector is compatible with your car before driving to a charging station.
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Ambient temperature
The range of an electric vehicle (EV) is affected by several factors, one of the most significant being ambient temperature. The impact of temperature on EV range is substantial, and this effect is felt more acutely in
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Frequently asked questions
The listed range of an electric vehicle is usually an estimate. There are many factors that can affect the range of an electric vehicle, such as ambient temperature, driving speed, use of air conditioning, and battery capacity. It is important to consider your own driving habits and conditions when evaluating the accuracy of a listed range.
Range anxiety is the concern that an electric vehicle will not have enough battery capacity to complete a journey. This is a valid concern given the limited number of public charging stations and the time required to charge an electric vehicle.
Electric vehicles can travel on average barely half the distance of gas-powered vehicles before they need to be charged. Gas-powered vehicles also have better highway efficiency, while electric vehicles tend to have better city efficiency due to their ability to recapture energy when decelerating.
The EPA is the Environmental Protection Agency, which provides estimates for the range of electric vehicles. The EPA tests vehicles in a laboratory setting, taking into account factors such as default settings, drive cycles, and ambient temperature. The total distance traveled is then multiplied by a correction factor to reflect what drivers can expect in the real world.
Yes, organizations like Edmunds and Cars.com conduct their own tests to verify the range of electric vehicles. Edmunds, for example, drives vehicles on a mix of city and highway roads until the battery is almost empty and then calculates the consumption based on the miles traveled. Cars.com also provides a list of electric vehicles with published ratings by the EPA and offers information on their range and features.
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