According to The Wall Street Journal, Japan's transport ministry said that Mitsubishi is still using altered fuel economy figures after being found out that the figures were off by as much as 8.8 percent. The cars that were affected were all supermini city cars that were meant for locals only.
After being caught falsifying fuel-economy data for the four models, the company was ordered to correct the figures immediately back in April. However, they have yet to do so and the head of the ministry's road transport division, Naoki Fujii said “We cannot help but feel concerned that these points haven't been improved.”
It is said in the article that Mitsubishi is aware of similar data errors dating back to 1991.