Mitsubishi Audit of 2013-'17 Vehicles Shows No U.S. Testing Problems | Edmunds

Mitsubishi Audit of 2013-'17 Vehicles Shows No U.S. Testing Problems


CYPRESS, California — A Mitsubishi internal audit of 2013-'17 vehicles in the U.S. has found no testing problems with fuel economy data, the company said on Wednesday.

"Our findings confirm that fuel economy testing data for these U.S. market vehicles is accurate and complies with established EPA procedures," Mitsubishi said in a statement.

The Japanese automaker is at the center of a scandal over inflated fuel economy ratings for its small cars sold in Japan.

Mitsubishi confirmed earlier this week that it had used testing methods since 1991 that did not comply with Japanese fuel economy regulations.

"An entirely different system is used for the United States market to determine what the EPA calls Road Load Coefficient, strictly adhering to EPA procedures," Mitsubishi said.

The audit information has been shared with the EPA, California Air Resources Board and the U.S. Department of Transportation.

The EPA this week ordered Mitsubishi to conduct additional "coast down" tests for its U.S. vehicles.

During coast-down testing, vehicles coast to a stop from 80 mph, so regulators can check such data as aerodynamic drag and friction in the drivetrain. The data is used to program dynamometers to simulate driving on roads during lab tests.

An EPA spokeswoman did not respond immediately to a query from Edmunds asking for reaction to the automaker's internal audit of its U.S. vehicles.

Mitsubishi's current U.S. lineup includes such vehicles as the Mitsubishi i-MiEV electric hatchback and Mitsubishi Outlander SUV.

Edmunds says: Mitsubishi's internal audit is designed to reassure U.S. consumers, but results are not yet in on the additional tests ordered by the EPA.

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