Suzuki is the latest carmaker to come clean and admit its chosen methods for calculating official fuel economy readings have, in some instances, been flawed.
Instead of using the Japanese industry method, Suzuki has instead ‘estimated’ fuel economy readings based on previously-gathered data using similar parts configurations.
The carmaker also conducted some tests designed for ‘real world’ outdoor environments “on top of a hill, close to the sea”, potentially benefitting from prevailing wind conditions in a test designed to measure wind resistance.
The announcement comes during a month that has already seen a similar declaration from Mitsubishi, and an accusation from Korean authorities that Nissan has used an emissions ‘defeat device’ in its diesel-powered Qashqai.
Mitsubishi’s President and Vice President have resigned over the issue, and Nissan announced that it would take up a 34 percent stake in Mitsubishi soon after the deliberately-inaccurate fuel figures were exposed.
Following the Mitsubishi saga, Japan’s transport ministry began cross-checks against other carmakers in the local market, and Suzuki is the next to fall foul.
Suzuki CEO Osamu Suzuki apologised on behalf of the carmaker for the debacle, but added that the ‘real’ economy figures weren’t too far removed from those that had been stated.
The CEO also said that 2.1 million vehicles will be affected, but Japanese authorities are yet to determine what action, if any, will result from the findings.
Both Mitsubishi and Suzuki may yet face fines from the transport ministry, which has ordered a full disclosure from Suzuki before the end of the month.
Suzuki said a ‘business as usual’ approach will ensue for now, as all models affected by the announcement remain on the market.
Suzuki said models sold outside Japan were not affected.
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