RealEVRange Estimate
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Calculated at 65 mph based on vehicle drag coefficient, frontal area, and drivetrain losses.
Stop trusting manufacturer lab tests. We run the actual aerodynamic physics and live weather data to show you the truth.
No black boxes. No manufacturer bias. Here's exactly how our algorithm turns raw physics into the number you see.
We compute drag force, rolling resistance, and drivetrain losses for each vehicle from its actual specs. No guessing.
Air density changes with temperature. We adjust the physics formula dynamically if you input a city.
A machine learning bridge cross-references the math with real-world highway driving tests. Physics is dominant — ML only nudges.
The physics engine is always in control. This prevents a bad ML prediction from ever producing an absurd result.
Because manufacturer figures (EPA, WLTP) are obtained under controlled lab conditions optimized for the test — constant temperature, smooth road, no accessories running, specific speed cycles.
On average, 94% of EVs deliver less range than claimed in the real world. Our algorithm models real-world driving conditions (aerodynamic drag, actual rolling resistance), which is why our estimate is almost always lower — and more accurate.
The engine uses five primary vehicle parameters pulled from our database for each model:
weight_kg — kerb weightcx — drag coefficientfrontal_area_m2 — frontal cross-sectionbattery_net_kwh — usable battery capacitytire_width_mm — affects rolling resistance
From these, we calculate aerodynamic drag, rolling resistance, and drivetrain losses. Larger vehicles get a more highway-weighted profile automatically.
Cold air is significantly denser than warm air, which increases aerodynamic drag. Furthermore, cold temperatures increase the internal resistance of the battery cells and force you to run the cabin heater.
When you input a city, we ping the OpenWeatherMap API for live telemetry. We recalculate the air density (ρ) for the drag equation and apply a thermal penalty based on the exact temperature right now in that location.
The score is simply: RealEVRange Estimate ÷ Manufacturer Claim × 100. It tells you how honest the manufacturer's official range figure is compared to what drivers actually experience at a baseline 65mph highway cruise.
85%+ = Relatively honest.
75–84% = Moderate gap, typical for most EVs.
Below 75% = Significant overstatement — use caution.
No. RealEVRange has zero dealer partnerships, accepts no sponsored placements, and is not affiliated with any manufacturer. Every figure you see is calculated independently by the engine.