Have you ever seen an ad trumpeting "XX MPG" for a vehicle only to realize that's the
highway rating they're advertising?
The U.S. FTC is looking at updating advertising rules to “focus on information that helps marketers avoid deceptive or unfair claims.”
The rules were last updated in 1975.
One suggestion under consideration is that both city & hwy numbers should be listed in ads.
They're also looking at requiring ads to avoid "qualitative" fuel economy claims that don't include actual numbers, like "this car gets great MPG!"
They're currently seeking comments/input.
Source: FTC may revise fuel economy advertising guidelines | The Detroit News