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EV Ranges Explained: EPA, WLTP, and NEDC

Estimated mileage may vary depending on how EV performance is measured.

Mileage is one of the biggest concerns for most people when buying an electric vehicle. How do you decide which EV brand and model to buy when you need a specific range to create an EV that fits your lifestyle?

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Understanding how EV range estimates are generated is a good starting point. However, determining the actual mileage of an electric vehicle can be a bit confusing at first as you can see three different numbers related to a given vehicle.

The most common EV range numbers you see are provided by three organizations: the US Environmental Protection Agency (EPA), the Worldwide Harmonized Light Vehicle Test Procedure (WLTP), and the New European Driving Cycle (NEDC).

The numbers rarely match and may differ from the actual range as each organization has its own testing procedures. It can be helpful to understand how each arrives at their own results and how these results relate to the range of EVs in the real world.

Although NEDC and WLTP are based in Europe, you can see information about many cars sold in the US.

How EPA Determines EV Range

The US Environmental Protection Agency is conducting a series of tests in which test EVs are driven on devices that are essentially automotive treadmills. The first test included a simulation of driving an electric vehicle at a speed of 21.1 MPH for 11.04 miles. Other tests are also performed, including highway driving simulations and city driving simulations. The numbers from each test are then combined to create an expected range.

When looking at the EV ranges provided by the EPA, it is important to remember that the testing procedure is conducted indoors at room temperature and at very specific rates. The vehicle is also tested with only one person (driver) with no additional passengers or cargo. Due to these and other factors, the EPA EV Series may differ from the actual experience the driver experiences when experiencing extreme heat or cold, carrying a large number of passengers or cargo, or continuously pressing the accelerator pedal.

To make the results easier to understand, the EPA does not just provide scope. It also provides a mile-per-gallon equivalent measure (MPG) that can be used to compare EPA MPG estimates for internal combustion engines.

EPA arrives at MPGe figures using standard industry conversions where 33 kWh equals one gallon of gas. Looking at ICE’s MPG, which is similar to EV’s MGPe, gives you a good idea of ​​how much electricity will be spent charging the EV compared to gasoline to fuel the ICE.

NEDC vs WLTP: Other Range Measurements You Need to Know

The other two EV range measurements are the New European Driving Cycle and the Globally Harmonized Light Vehicle Test Procedure. NEDC was originally introduced in the 1980s, and WLTP will replace it. This is mainly because WLTP provides more accurate and realistic range estimates, whereas NEDC tests rely more on theoretical driving estimates. Both numbers are often provided when comparing electric vehicles during the transition.

Both NEDC and WLTP testing are performed at higher top rates than EPA testing procedures. The difference is:

NEDCWLTP
A single ride cycle in a laboratory using a treadmill-like deviceA four-step driving cycle in the laboratory using a treadmill-like device.
Simulate driving conditions that repeat go-and-go.Speeds range from 29 mph to 82 mph, with low downtime and idle time.
Temperatures between 68 and 86 degrees FahrenheitStrictly controlled temperature of 73.4 degrees Fahrenheit
Actual driving factors such as air conditioning, lighting or radio use are not included.Factors such as air conditioning and typical types of road traffic are taken into account.

WLTP provides a more complete picture than previous NEDC tests because it uses longer drive cycles, includes more test steps, and takes other real-world factors into account.

WLTP provides a more complete picture than previous NEDC tests because it uses longer drive cycles, includes more test steps, and takes other real-world factors into account.

Mileage may vary. actual range

The ranges provided by the EPA, WLTP, and NEDC are all useful guidelines, but rarely perfectly match real-world experience.

EPAs typically report the lowest range numbers, NEDCs are the highest, and WLTPs tend to lie between the other two numbers. Part of this is due to the test temperature, as NEDC uses the highest average test temperature and batteries tend to work better warm than cold. The rest is due to different test procedures as each test uses different speeds and a different mix of simulated city and off-road driving.

A look at the example EV (2019 BMW i3 BEV) shows just how diverse the reports are.

NEDCWLTPEPA
223 miles177-193 miles153 miles


The actual results of the BMW i3 EV are likely to correspond to lower EPA numbers, but driving conditions and style have a big impact. When Car and Driver took a look at the 2019 BMW i3, they found their own real-world test scheduled with the EPA.

Another tester, Inside EVs, scored 141 points in the actual test, about 8% lower. Results from these two independent tests are both very close to EPA levels, but much higher for NEDC and WLTP levels.

The bottom line is that these areas will help narrow down the range of electric vehicles that are better suited to your lifestyle, but there are many other factors to consider as well. For example, if you live in a cold region or drive a lot in cold weather in the winter, you may see actual EV ranges well below the EPA figure.

The EV range is also affected by running accessories, such as air conditioners, so if you use a lot of power-hungry accessories, the numbers displayed are also lower than the official ratings.

On the other hand, if you live in a temperate zone and your driving habits closely match the program used in the test, you might see numbers closer to your WLTP values. However, for most drivers, EPA levels are usually closest to what you would expect in the real world.

This is the range required for electric vehicles.

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EV Ranges Explained: EPA, WLTP, and NEDC

Range estimates can vary depending on how your EV’s performance is measured

Range is one of the biggest concerns most people have when purchasing an EV. How do you decide which EV make and model to buy if you need a certain range to make an electric vehicle work for your lifestyle?

Where Ratings Come From

Understanding how EV range estimates are created is a good place to start. However, determining the actual range of an EV can be a bit confusing at first because you’re likely to see three different numbers in reference to any given vehicle.

The EV range numbers you’re most likely to see are provided by three different organizations: the US Environmental Protection Agency (EPA), Worldwide Harmonised Light Vehicle Test Procedure (WLTP), and New European Driving Cycle (NEDC). 

Their numbers rarely line up with each other and can also differ from real world ranges because each organization has its own specific test procedures. It can be helpful to understand how each one arrives at their own results and how those results relate to EV ranges in the real world.

Even though NEDC and WLTP are based in Europe, you’ll see their information on many cars sold in the U.S.
How the EPA Determines EV Range

The US Environmental Protection Agency conducts a number of tests that involve driving the test EV on a device that’s basically a treadmill for cars. The primary test involves simulating driving an EV at a speed of 21.1 MPH for 11.04 miles. Other tests are also performed, including one meant to simulate highway driving, and one meant to simulate stop-and-go city driving. The numbers from each test are then combined to create an estimated range.

When you look at an EV range provided by the EPA, it’s important to remember that its test procedures are performed indoors at room temperature and at very specific speeds. The vehicles are also tested with only a single person inside (the driver), without additional passengers or cargo. These and other factors can cause an EPA EV range to differ from real world experiences, where drivers experience extreme heat or cold, haul lots of passengers or cargo, or keep a lead foot on the accelerator.

To make it easier to understand its results, the EPA doesn’t just report range. It also provides a miles-per-gallon equivalent measurement, or MPGe, that you can compare the EPA MPG estimates given for ICE vehicles. 

The EPA arrives at the MPGe number by using a standard industry conversion where 33 kWh equals one gallon of gas. When you look at the MGPe of an EV and the MPG of a similar ICE vehicle, you’ll get a good idea of how much you’ll end up spending on electricity to charge the EV versus gas to fuel the ICE vehicle.
NEDC Vs. WLTP: The Other Range Measurements to Know

The other two EV range measurements are the New European Driving Cycle and the Worldwide Harmonised Light Vehicle Test Procedure. The NEDC was originally introduced in the 1980s, and the WLTP is designed to take its place, primarily because WLTP provides more accurate, real-world range estimates while the NEDC tests are based more on theoretical driving estimates. During the transition, it’s common to see both numbers cited when you’re comparing EVs.

NEDC and WLTP tests are both performed at higher maximum speeds than the EPA test procedure. Here’s how they differ: 

NEDC
WLTP
Single driving cycle in a lab using a treadmill-type device
Four-phase driving cycles in a lab using a treadmill-type device.  
Simulates stop-and-go driving conditions
Speeds range between 29 mph and 82 mph with fewer stops and less idling time
Temperature between 68 and 86 degree Fahrenheit
Temperature at a tightly controlled 73.4 degrees Fahrenheit
Doesn’t include real-world driving factors, such as air conditioning, lights, or radio use
Factors such as air conditioning and typical types of road traffic are taken into account.

Since the WLTP uses a longer driving cycle, includes more test phases, and takes into account other real-world factors, it provides a more complete picture than the old NEDC test.

Since the WLTP uses a longer driving cycle, includes more test phases, and takes into account other real-world factors, it provides a more complete picture than the old NEDC test.

Your Mileage May Vary: Range in the Real World

The ranges given by the EPA, WLTP, and NEDC are all useful guidelines, but they rarely line up perfectly with real world experiences. 

The EPA typically reports the lowest range numbers, the NEDC reports the highest, and the WLTP tends to fall in between the other two. Part of that is due to testing temperatures, as the NEDC uses the highest average testing temperatures, and batteries tend to perform better warm than cold. The rest is due to different testing procedures, as each test uses different speeds and different mixes of simulated urban and non-urban driving.

Looking at an example EV (the 2019 BMW i3 BEV), you can see how the different reports vary wildly. 

NEDC
WLTP
EPA
223 miles
177-193 miles
153 miles

Real world results for the BMW i3 EV are most likely to match the lower EPA number, although driving conditions and style do have a big impact. When Car and Driver checked out the 2019 BMW i3, it found its own real world tests lined up with the EPA.

Another tester, Inside EVs, came up with a result about 8 percent lower in its real world tests, for a range of 141. Both of these independent test results are fairly close to the EPA numbers, while the NEDC and WLTP numbers are much higher.

The bottom line is that, although these ranges do give you some help in narrowing down EVs that are more appropriate for your lifestyle, many other factors should also be considered. For example, if you live in a cold area, or do a lot of winter driving in cold conditions, then you’re likely to see real world EV ranges that are significantly lower than even the EPA numbers.

EV range is also impacted by running accessories like air conditioning, so the numbers you see will also end up lower than the official ratings if you run power-hungry accessories a lot. 

On the other hand, you might also see numbers closer to the WLTP ratings if you live in a temperate area and your driving habits closely match the program it uses for its tests. For most drivers, however, the EPA numbers are usually the closest to what you can expect to see in the real world.

How Much Range You Need in Your EV
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#Ranges #Explained #EPA #WLTP #NEDC

EV Ranges Explained: EPA, WLTP, and NEDC

Range estimates can vary depending on how your EV’s performance is measured

Range is one of the biggest concerns most people have when purchasing an EV. How do you decide which EV make and model to buy if you need a certain range to make an electric vehicle work for your lifestyle?

Where Ratings Come From

Understanding how EV range estimates are created is a good place to start. However, determining the actual range of an EV can be a bit confusing at first because you’re likely to see three different numbers in reference to any given vehicle.

The EV range numbers you’re most likely to see are provided by three different organizations: the US Environmental Protection Agency (EPA), Worldwide Harmonised Light Vehicle Test Procedure (WLTP), and New European Driving Cycle (NEDC). 

Their numbers rarely line up with each other and can also differ from real world ranges because each organization has its own specific test procedures. It can be helpful to understand how each one arrives at their own results and how those results relate to EV ranges in the real world.

Even though NEDC and WLTP are based in Europe, you’ll see their information on many cars sold in the U.S.
How the EPA Determines EV Range

The US Environmental Protection Agency conducts a number of tests that involve driving the test EV on a device that’s basically a treadmill for cars. The primary test involves simulating driving an EV at a speed of 21.1 MPH for 11.04 miles. Other tests are also performed, including one meant to simulate highway driving, and one meant to simulate stop-and-go city driving. The numbers from each test are then combined to create an estimated range.

When you look at an EV range provided by the EPA, it’s important to remember that its test procedures are performed indoors at room temperature and at very specific speeds. The vehicles are also tested with only a single person inside (the driver), without additional passengers or cargo. These and other factors can cause an EPA EV range to differ from real world experiences, where drivers experience extreme heat or cold, haul lots of passengers or cargo, or keep a lead foot on the accelerator.

To make it easier to understand its results, the EPA doesn’t just report range. It also provides a miles-per-gallon equivalent measurement, or MPGe, that you can compare the EPA MPG estimates given for ICE vehicles. 

The EPA arrives at the MPGe number by using a standard industry conversion where 33 kWh equals one gallon of gas. When you look at the MGPe of an EV and the MPG of a similar ICE vehicle, you’ll get a good idea of how much you’ll end up spending on electricity to charge the EV versus gas to fuel the ICE vehicle.
NEDC Vs. WLTP: The Other Range Measurements to Know

The other two EV range measurements are the New European Driving Cycle and the Worldwide Harmonised Light Vehicle Test Procedure. The NEDC was originally introduced in the 1980s, and the WLTP is designed to take its place, primarily because WLTP provides more accurate, real-world range estimates while the NEDC tests are based more on theoretical driving estimates. During the transition, it’s common to see both numbers cited when you’re comparing EVs.

NEDC and WLTP tests are both performed at higher maximum speeds than the EPA test procedure. Here’s how they differ: 

NEDC
WLTP
Single driving cycle in a lab using a treadmill-type device
Four-phase driving cycles in a lab using a treadmill-type device.  
Simulates stop-and-go driving conditions
Speeds range between 29 mph and 82 mph with fewer stops and less idling time
Temperature between 68 and 86 degree Fahrenheit
Temperature at a tightly controlled 73.4 degrees Fahrenheit
Doesn’t include real-world driving factors, such as air conditioning, lights, or radio use
Factors such as air conditioning and typical types of road traffic are taken into account.

Since the WLTP uses a longer driving cycle, includes more test phases, and takes into account other real-world factors, it provides a more complete picture than the old NEDC test.

Since the WLTP uses a longer driving cycle, includes more test phases, and takes into account other real-world factors, it provides a more complete picture than the old NEDC test.

Your Mileage May Vary: Range in the Real World

The ranges given by the EPA, WLTP, and NEDC are all useful guidelines, but they rarely line up perfectly with real world experiences. 

The EPA typically reports the lowest range numbers, the NEDC reports the highest, and the WLTP tends to fall in between the other two. Part of that is due to testing temperatures, as the NEDC uses the highest average testing temperatures, and batteries tend to perform better warm than cold. The rest is due to different testing procedures, as each test uses different speeds and different mixes of simulated urban and non-urban driving.

Looking at an example EV (the 2019 BMW i3 BEV), you can see how the different reports vary wildly. 

NEDC
WLTP
EPA
223 miles
177-193 miles
153 miles

Real world results for the BMW i3 EV are most likely to match the lower EPA number, although driving conditions and style do have a big impact. When Car and Driver checked out the 2019 BMW i3, it found its own real world tests lined up with the EPA.

Another tester, Inside EVs, came up with a result about 8 percent lower in its real world tests, for a range of 141. Both of these independent test results are fairly close to the EPA numbers, while the NEDC and WLTP numbers are much higher.

The bottom line is that, although these ranges do give you some help in narrowing down EVs that are more appropriate for your lifestyle, many other factors should also be considered. For example, if you live in a cold area, or do a lot of winter driving in cold conditions, then you’re likely to see real world EV ranges that are significantly lower than even the EPA numbers.

EV range is also impacted by running accessories like air conditioning, so the numbers you see will also end up lower than the official ratings if you run power-hungry accessories a lot. 

On the other hand, you might also see numbers closer to the WLTP ratings if you live in a temperate area and your driving habits closely match the program it uses for its tests. For most drivers, however, the EPA numbers are usually the closest to what you can expect to see in the real world.

How Much Range You Need in Your EV
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