Mitsubishi Admits to Cheating on Fuel Economy Tests

Mitsubishi Admits to Cheating on Fuel Economy Tests

Mitsubishi Motors has admitted that it manipulated fuel economy data for about 620,000 Japan-market vehicles. 

Mitsubishi has halted sales and production of the affected cars, which include Mitsubishi’s eK Wagon and eK Space along with 468,000 units of the Dayz and Dayz Roox that it built for Nissan Motor. All of these are mini-cars, built from June 2013.

A probe into other Mitsubishi models, including vehicles in the U.S., is now being launched to see if the cheating is more widespread.

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The discrepancy in emissions was discovered by Nissan engineers during testing, who then approached Mitsubishi with what they had found. “In response to Nissan’s request, Mitsubishi admitted that data had been intentionally manipulated in its fuel economy testing process,” says a statement from Nissan.

President of Mitsubishi Tetsuro Aikawa said that his company “conducted testing improperly to present better fuel consumption rates than the actual rates,” and he added that “the testing method was also different from the one required by Japanese law.”

“We express deep apologies to all of our customers and stakeholders for this issue,” said Aikawa.

After Mitsubishi president Tetsuro Aikawa made the announcement, shares in Mitsubishi Motors Corp fell by 15 percent, knocking about $1.2 billion from the brand’s market value.

Discuss this story at our Mitsubishi Forum

  • craigcole

    While this really doesn’t affect us here in North America, it’s just more bad news for Mitsu.

  • shaongaon

    The Infernal Combustion Engine wins in any event.

  • Papa Rotzi

    does anyone know WHAT the actual MPG impact was? So far it’s just innuendo and NO actual details. If it’s based on over-inflating tires, it can’t be more than 1 or 2 MPG. It’s not the end of the freaking world here. Most consumers drive around on tires that are not even carrying the recommended PSI in them, so I doubt they’d actually notice. Additionally, at least here in the USA, the numbers posted on the Monroney sticker by the EPA/Automakers is a pipedream, and is, at best, a guideline for consideration when comparing similar classes of cars or trucks. A car with a 37 MPG rating and another with 39MPG is the same to me when comparing. I’m more interested in performance, reliability, comfort, handling, looks and quietness. I’m not making excuses for Mitsubishi, or condoning their dishonesty, but let’s discuss the REAL issue – what are we talking about here in real MPG and consumer costs? A 2 MPG difference, over 12,000 miles/year amounts to about 17 gallons of fuel difference. At $3/gal that’s a little over $50/year. Just give each owner a $500 Gas card and move on. And the Gov’t needs to come up with real-world testing and MPG estimates. Until then it’s just a game ALL the automakers play, Hyundai, Ford, Mitsubishi, etc.