RealEVRange Estimate
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Calculated at 65 mph based on vehicle drag coefficient, frontal area, and drivetrain losses.
Search any EV to see real motorway range, winter impact and how honest the official number really is.
Before buying a used EV, you deserve to know what you're actually getting. Our $1.99 report gives you the full picture — degradation, real highway range, and whether the asking price makes sense.
Every number on this site comes from repeatable physics. Here's the exact pipeline from raw specs to the range you see.
Manufacturer figures (EPA, WLTP) are obtained under controlled lab conditions optimized for the test — constant temperature, smooth road, no accessories, specific speed cycles. Our algorithm models real-world highway conditions, which is why our estimate is almost always lower — and more accurate.
Five primary parameters per vehicle: weight_kg, cx (drag coefficient), frontal_area_m2, battery_net_kwh, and tire_width_mm. From these we calculate aerodynamic drag, rolling resistance, and drivetrain losses.
Cold air is denser, increasing aerodynamic drag. Cold temps also raise battery internal resistance and force the cabin heater. We ping OpenWeatherMap for your city's live temperature, recalculate air density (ρ) and apply a thermal penalty.
RealEVRange Estimate ÷ Manufacturer Claim × 100.
85%+ = Relatively honest. 75–84% = Moderate gap. Below 75% = Significant overstatement.