"We're pleased the label clearly demonstrates the Nissan LEAF to be a best-in-class option, reflecting that it's a pure electric vehicle, uses no gas, has no tailpipe and has zero emissions, " said Scott Becker, senior vice president, Finance and Administration, Nissan Americas.

ENGADGET: Nissan Leaf blessed with 99MPG 'equivalent' sticker, roundtable arguments ensue

The firm said that it will more clearly label results from YouTube, Google Maps and its other sites.

BBC: Google offers clearer search labels after EU probe

MPs and pottery firms in Staffordshire have urged the government to introduce new laws forcing manufacturers to clearly label where their products are made.

BBC: MPs and potteries campaign for Made in Britain mark