Database / Guides / Why your range won't match the EPA's
EPA range is measured in a lab, and your driveway is not a lab. Here's what the number actually promises — and where it falls apart.
The EPA runs cars on dynamometers through standardized city and highway cycles, then adjusts the results down to approximate real driving. The single "range" figure blends both. We publish the city and highway figures separately on every vehicle page, because they tell different stories.
Gas cars are most efficient cruising; EVs are the opposite — regenerative braking recaptures energy in stop-and-go traffic, while highway speed burns it fast. Take the 2026 Chevrolet Silverado: 539 miles of city range versus 437 on the highway, a 102-mile gap. If your life is mostly highway, shop by the highway number, not the headline.
Speed (drag squares with velocity — 80 mph costs far more than 65), cold weather (battery chemistry slows and the heater draws kilowatts), heat (AC is cheaper than heating, but it still counts), and tires (stickier or larger wheels can cost 5–10%). Knock 10–20% off the EPA figure for fast highway driving in winter and you'll rarely be surprised.
Treat EPA figures as the only fair way to compare cars — every model takes the same test — not as a promise of what you'll get. The rankings on this site are pure sorts of those test results. Your mileage will vary; the ordering won't.
Regenerative braking recaptures energy in stop-and-go traffic, while highway speed burns it fast — the opposite of gas cars. Check the city/highway split on each vehicle page.
It varies, but knocking 10-20% off the EPA figure for fast highway driving in cold weather keeps expectations honest. Battery chemistry slows and cabin heating draws serious power.
No — they're the only fair comparison. Every car takes the same lab test, so the rankings hold even if your personal numbers differ.
Figures: U.S. EPA via fueleconomy.gov, model years 2025–2027. Updated October 2026.