Mitsubishi used tests that were outlawed since 1991
MITSUBISHI Motors used fuel-economy testing methods that were not compliant with Japanese regulations since 1991, earlier than the automaker has stated, a source briefed on the issue told Reuters.
Mitsubishi last week admitted to falsifying fuel-economy data for four minivehicle models in the Japanese market.
It has also said it used testing methods which were not compliant with Japanese standards going back to at least 2002 to calculate fuel economy for other vehicle models.
The source declined to be identified due to the sensitivity of the issue.
The news was first reported by the Nikkei business daily.
A Mitsubishi spokesman declined to comment.