Range Score compares a vehicle’s current expected range to what was normal when new. We compare against like-new range, rather than EPA range, since many of the new cars we observe get significantly more or less range than the rated value. For instance, the 2018 Tesla Model 3 Long Range has an EPA rated range of 310 miles, but in our observations, the like-new range for this vehicle is 303 miles. The 2018 Nissan LEAF is rated at 151 miles, but the like-new range that we’ve observed is 158 miles.
We compare each individual vehicle against similar vehicles. In order to compare across trims or model years, we normalize the range. It's good to note that how much a car varies from the average range is dependent on its brand, and cars are scored according to this variation. This means while you can compare a Chevrolet against a Tesla, the comparison is most informative when comparing two cars of the same make.
Range Score will continue to be developed and improved using cutting edge science and improvements to our data models. We will update this page when our methodology changes.