MPG vs MPGe
As you’re researching your hybrid or electric vehicle options, you’ve probably noticed how some vehicles have their fuel economy rated by “MPGe”. You may be asking yourself, what exactly does MPGe mean? Well, simply stated, MPGe stands for “Miles Per Gallon Equivalent”. Traditional MPG measures how many miles your vehicle is able to travel using one gallon of gasoline. Since hybrid and fully-electric vehicles don’t always need gasoline to operate, “MPGe” is more useful metric for comparing energy consumption for electric vehicles.
What is kWh/100 Miles?
In order to create the MPG equivalent, the Environmental Protection Agency (EPA) uses an established energy standard of 115,000 BTUs (British thermal units) per gallon of gasoline. Simplified, this means that if you ignited 1 U.S. gallon of unleaded gasoline, it would generate that much heat. To create that same amount of heat, 33.7 kilowatt-hours of electricity would be required. Thus, 1 gallon of gasoline generates the same ‘heat energy’ as 33.7 kilowatt-hours of electricity.
If an electric vehicle is able to travel 100 miles on 33.7 kWh of electricity (the energy equivalent of 1 gallon of gasoline), it would be rated with an MPG equivalency of 100 MPGe. Let’s say a different electric car can travel that same 100 miles while using 32 kWh, slightly less than the previous example. This second electric car would receive a rating of 105 MPGe since it’s more efficient. Just like traditional MPG ratings for a gasoline-powered vehicle, the EPA rates MPGe across city, highway, and combined fuel economy.
Mileage Range Rating for Electric Vehicles
Another key component listed on the EPA sticker is the range rating. This lists how far the vehicle is rated to drive on electric power alone – and for hybrid vehicles how far it can continue on gasoline power – given a fully charged battery. Keep in mind that the EPA bases its calculations on the premise that because of various charging options, the typical EV will have only 90 percent of a full charge. It’s best to use this number as a guide, rather than an absolute value.
It’s also important to note that much like the MPG of a gasoline vehicle, EV range can vary widely depending on how you drive. Cargo load, terrain, climate, and how much of a lead foot you have each play a role in determining your exact MPGe.
Hybrid & Electric Vehicles Available at Blue Grass MOTORSPORT
Now that you’ve learned all about the difference between MPG and MPGe, Blue Grass MOTORSPORT wants to introduce you to the available hybrid, plug-in hybrid, and electric vehicles available at our dealerships. You’ll discover plenty of options to suit your driving needs and lifestyle.
| Starting MSRP | Combined MPGe | EV Range | 0-60 Time | |
|---|---|---|---|---|
| 2019 Tesla Model X | $88,000 | 93 | 295 miles | 4.7 seconds |
| 2019 Audi e-tron quattro | $74,800 | 74 | 204 Miles | 5.5 seconds (with boost engaged) |
| 2019 Jaguar I-PACE | $69,500 | 76 | 234 miles | 4.5 seconds |
| 2019 Range Rover Sport PHEV | $78,600 | TBD | 31 miles | 6.3 seconds |
| 2019 Porsche Panamera 4 E-Hybrid | $102,900 | 51 | 14 miles | 4.4 seconds (with Sport Chrono package) |
| 2019 Porsche Cayenne S E-Hybrid | $79,900 | TBD | TBD | 4.7 seconds |
| 2020 Porsche Taycan | TBD | TBD | 300 miles (estimated) | 3.5 seconds |
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