Mitsubishi Motors used non-compliant data far longer than disclosed: source

By Naomi Tajitsu TOKYO (Reuters) - Mitsubishi Motors Corp used fuel economy testing methods that were not compliant with Japanese regulations since 1991 - much longer than previously known, a source briefed on the matter said. Japan's sixth-largest automaker has lost half of its market value - some $3.9 billion - since it admitted last week that it overstated the fuel economy of four domestic minivehicle models, including two produced for Nissan Motor Co . The automaker has also said it used tes