Mitsubishi said it would examine other models made for global markets to verify their fuel economy levels. Mitsubishi measured how much they slowed per second rather than the time it takes to slow by 10 kms (6.2 miles) per hour, as required under Japanese regulations. It also manipulated the equipment used to measure a car’s rolling resistance during fuel economy tests, and used a different testing system from other Japanese automakers. President Aikawa says mishandling of data was `intentional’. Violation may result in the Japanese automaker having to pay back government tax rebates for the vehicles. Mitsubishi Motors’s disclosure may cause further damage to consumers’ trust in car companies’ fuel economy claims.