GuideUnderstand6 minutesReviewed 28 July 2026
EPA vs WLTP vs CLTC range: what is the difference?
The short answer. EPA, WLTP, and CLTC are different laboratory test procedures. Their results should not be mixed or converted with one universal formula. Compare vehicles under the same test cycle and treat every official result as a standardized reference, not a guaranteed trip distance.
See every range figure with its cycleThe test cycle is part of the number
A range figure without its test standard is incomplete. The route simulation, speeds, temperature assumptions, and adjustment methods differ between systems.
Charjin always shows the test cycle next to the figure and keeps multiple official ratings separate.
How to compare two cars
Compare EPA with EPA or WLTP with WLTP, using equivalent battery and drivetrain versions. Then consider the road conditions that dominate your driving.
Why your result will change
Sustained speed, cabin heating or cooling, temperature, elevation, wind, load, and tyre choice can all change energy consumption.