Apologies came early and often from Hyundai CEO John Krafcik this week.

Last month, an EPA investigation revealed that automakers Hyundai and Kia had exaggerated the fuel economy of several cars in their fleets by as much as 6 miles per gallon. The Korean automakers blamed faulty tests for the errors.

"The whole episode has obviously been a really difficult one for all of us at Hyundai," Krafcik said at the Los Angeles Auto Show, the first major industry gathering since the EPA announced its findings.

Fuel economy currently ranks at the top criteria for prospective car buyers, so talk of the misstatements was a top storyline throughout the event. Not only for what it means to Hyundai and Kia, but potentially for the rest of the industry.

Many automotive officials believe more automakers will fall under scrutiny for their mileage claims on window stickers.

"I think every manufacturer did what we did and went back and said, 'Are these real numbers?'" Al Castignetti, vice president of Nissan tells the Automotive News.

Jake Fisher, senior director of automotive testing for Consumer Reports, expects the repercussions to be more widespread.

"I think we might see more of this," he said. "There are other vehicles that don't really stack up to the EPA estimates."