{"id":48157,"date":"2023-04-25T09:03:15","date_gmt":"2023-04-25T13:03:15","guid":{"rendered":"https:\/\/autosector.com\/?p=48157"},"modified":"2023-04-25T09:03:15","modified_gmt":"2023-04-25T13:03:15","slug":"1139460_reminder-epa-range-for-evs-isn-t-a-highway-number","status":"publish","type":"post","link":"http:\/\/autosector.com\/?p=48157","title":{"rendered":"Reminder: EPA range for EVs isn’t a highway number"},"content":{"rendered":"

EPA fuel-economy ratings have city, highway, and combined categories, but range ratings for EVs only include the latter. There’s a reason for that.<\/p>\n

A new paper published by SAE International<\/a> and co-authored by Car and Driver<\/a> testing director Dave VanderWerp emphasizes that the EPA combined EV range rating isn’t a number reflective of highway driving. The paper, which uses Car and Driver’s real-world highway testing methodology, shows that EVs fall short of their EPA-rated range in exclusively highway driving.<\/p>\n

<\/p>\n

The EPA has never called its range rating a highway number, and the study shows why. On Car and Driver’s real-world highway test, which involves driving at a steady 75 mph, more than 350 internal-combustion vehicles averaged 4.0% better fuel economy than their official ratings, but the average EV came up short by 12.5%, the magazine noted in an article about the paper.<\/p>\n

\"Volkswagen<\/p>\n

Volkswagen ID.4 built at Chattanooga<\/p>\n<\/div>\n

The paper’s authors explain the disparity between EPA ratings and real-world highway range. One is the fact that the combined figure is based on city and highway figures, but weighted 55% in favor of the city figure, generally the stronger category for EVs. As we’ve pointed out, EVs’ EPA city\/highway ratings<\/a> are better range guides if you truly know the usable capacity.\u00a0<\/p>\n

Car and Driver’s protocol of steady 75-mph driving may also be removing a crutch for EVs. EPA testing involves acceleration and deceleration. That’s bad for internal-combustion vehicles, which are usually most efficient at steady speeds, but less detrimental for EVs, as it allows them to take advantage of regenerative braking.<\/p>\n

\"Lucid<\/p>\n

Lucid Air Dream Edition<\/p>\n<\/div>\n

We’d also suggest that cold weather<\/a> also should be better incorporated into EV range estimates, as it affects the usable number so differently depending on the model. The wind direction<\/a> can have a big impact, too.<\/p>\n

Ultimately, the consistency in range and keeping up with expectations is probably more important than how high the range<\/a> number itself is. But realizing the nature of the EPA number helps make some real-world results\u2014for the Lucid Air<\/a>, for example, or some Tesla models\u2014all the more impressive.<\/p>\n","protected":false},"excerpt":{"rendered":"

EPA fuel-economy ratings have city, highway, and combined categories, but range ratings for EVs only include the latter. There’s a reason for that. A new paper published by SAE International and co-authored by Car and Driver testing director Dave VanderWerp emphasizes that the EPA combined EV range rating isn’t a number reflective of highway driving. […]<\/p>\n","protected":false},"author":1,"featured_media":48158,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[4],"tags":[],"class_list":["post-48157","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-e-cars"],"_links":{"self":[{"href":"http:\/\/autosector.com\/index.php?rest_route=\/wp\/v2\/posts\/48157","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/autosector.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/autosector.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/autosector.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/autosector.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=48157"}],"version-history":[{"count":0,"href":"http:\/\/autosector.com\/index.php?rest_route=\/wp\/v2\/posts\/48157\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/autosector.com\/index.php?rest_route=\/wp\/v2\/media\/48158"}],"wp:attachment":[{"href":"http:\/\/autosector.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=48157"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/autosector.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=48157"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/autosector.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=48157"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}