Understanding EV Range
The EPA-rated range of an EV represents ideal conditions. Real-world range depends on temperature, driving speed, terrain, HVAC use, and driving style. In cold weather, range can drop 20-40% due to battery chemistry limitations and cabin heating demands.
Highway driving at high speeds uses significantly more energy than city driving. At 75 mph, aerodynamic drag is roughly double compared to 55 mph, reducing range by 15-25%.
Range Estimation Formula
Popular EV Range Comparison
| Vehicle | Battery (kWh) | EPA Range | mi/kWh |
|---|---|---|---|
| Tesla Model 3 LR | 75 | 358 mi | 4.2 |
| Tesla Model Y LR | 75 | 326 mi | 3.8 |
| Hyundai Ioniq 6 | 77.4 | 361 mi | 4.4 |
| Ford Mustang Mach-E | 91 | 312 mi | 3.2 |
| Chevy Equinox EV | 85 | 319 mi | 3.5 |
| Rivian R1S | 135 | 321 mi | 2.5 |
Frequently Asked Questions
Why is my real range less than the EPA rating?
EPA tests are conducted at moderate speeds and temperatures. Real-world factors like highway speeds, cold/hot weather, hills, headwinds, and HVAC use all reduce range below the EPA number. Expect 10-30% less in typical conditions.
Does battery degradation reduce range?
Yes. EV batteries lose about 2-3% capacity per year on average. After 8 years, you might have 80-85% of original capacity. Proper charging habits (avoiding frequent 100% charges and extreme temperatures) slow degradation.
How does speed affect EV range?
Energy consumption increases roughly with the cube of speed due to aerodynamic drag. At 55 mph, an EV might get 4.0 mi/kWh. At 75 mph, that drops to about 3.0 mi/kWh, reducing range by 25%.