Mitsubishi Motors' Improper Mileage Tests Date Back to 1991

  • Carmaker taps three former prosecutors to begin investigation
  • Panel's probe to take three months, Mitsubishi Motors says

What Can Mitsubishi Do to Repair Its Image?

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Mitsubishi Motors Corp. said it has improperly tested the fuel economy of its cars for the past quarter century, deepening a crisis that’s already wiped out half its market value.

The automaker formed a panel of three former prosecutors to investigate improper testing that goes back as far back as 1991, including the falsification of fuel efficiency data, according to a statement Tuesday. The company said last week it hadn’t been complying with Japanese testing standards since 2002.