GM: Pollution control changes caused SUV mileage drop

DETROIT (AP) — A change in pollution control hardware between model years cut the gas mileage on some General Motors SUVs and forced it to correct the figures on window stickers, the company said Wednesday.

GM announced last week that the fuel economy was overstated by one-to-two miles per gallon on the 2016 GMC Acadia, Chevrolet Traverse and Buick Enclave.

In similar cases automakers including Hyundai and Kia compensated owners for the difference in window sticker mileage estimates.

For a front-wheel-drive version, the 2016 fuel economy of the SUVs was revised to 15 mpg city, 22 mpg highway and 18 mpg combined.