EV Highway Range Can Be Very Different from the EPA Numbers


Michael SimariAutomotive and Driver

From the September 2022 problem of Automotive and Driver.

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The distinguished vary figures on EVs’ window stickers aren’t the proper laboratory comparability many count on, as there may be a couple of technique automakers can legally make use of to reach at these figures. Additionally, as with braking or cornering efficiency, tires have a huge effect on vary. Some automakers, notably Tesla, undertake the costly and time-consuming means of reporting a spread for each wheel-and-tire mixture on every of its fashions, however most don’t.

Take the Rivian R1T. On this newest check, it achieved 280 miles, whereas beforehand it went solely 220. The distinction is primarily as a result of all-terrain tires on the primary truck and the road tires on the second, though each put on the identical 314-mile EPA-range label.

average price of electric vehicles rises, as supply costs continue to increase

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Whereas gas-powered autos usually exceed their EPA freeway fuel-economy work out on the open highway, it’s miles rarer for EVs to take action on our 75-mph vary check due to the effectivity of electrical motors versus internal-combustion engines within the window of velocity and acceleration contained within the EPA’s check cycles. Ambient temperature also can create massive swings in EV vary.

Who’s the Vary Chief?

The undisputed vary champ is the Lucid Air Grand Touring sedan, the primary EV to crest the 400-mile mark. That considerably betters the earlier chief, a Tesla Mannequin S Lengthy Vary Plus (320 miles), which was the primary EV to exceed 300 miles. There is a broad unfold within the 20 autos we examined this 12 months, each by way of miles (190 to 410) and within the proportion of EPA vary achieved in our check (77 to 112 p.c), with the most effective three going farther than their official figures. One other shock: The enormous Hummer EV held its personal at freeway velocity, though it consumes twice as a lot vitality because the BMW iX to go the identical 290 miles. As at all times, vary is just one piece of an EV’s efficiency, and there is extra nuance to it than a single quantity.

range magic

Infographic by DGFX StudioAutomotive and Driver


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