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09.08.2018 23:51:00

Report on Fuel Economy and Emission Testing Confirms No Improper Alteration or Falsification of Test Data by Mazda

WASHINGTON, Aug. 9, 2018 /CNW/ - Following a request made by Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) issued to Japanese automakers on July 9, 2018 after the discovery of fraudulent testing practices at other companies, Mazda Motor Corporation submitted a report to MLIT on the results of an investigation into its sample testing of fuel economy and emissions during final vehicle inspections.

The investigation covered JC081 and WLTC2 testing modes and the key findings of the report are:

  • No improper alteration or falsification of test data in either mode.
  • Test data containing speed trace errors* was found in 72 cases out of 1,472 vehicles tested under the JC08 mode.  The company has identified two reasons for these errors. Firstly, the system was not set up to automatically invalidate results when a speed trace error occurred. Secondly, test procedures left the determination of speed trace errors up to each individual inspector.
  • All test data has been re-examined and the results show there was no effect on specification fuel economy and emission figures. No such cases were found in WLTC mode testing.
  • This incident concerns only vehicles sold in Japan, and export vehicles are not applicable for this incident. Export vehicles are tested in accordance with the regulations of the market to which they are exported.

    Mazda has decided to take the following steps to prevent a reoccurrence:

    • The system will be updated to automatically treat test results as invalid in the event of a speed trace error.
    • Mazda has increased the number of employees who check inspection data, including speed trace errors.

    Mazda accepts that errors were made on a small number of tests and the situation was identified quickly and steps have been put in place to avoid it happening in the future.

    Items investigated and results

    Items investigated

    Result

    No. of vehicles

    Investigated

    No. of vehicles

    Affected

    Percentage

    of total

    Improper alteration of reported
    fuel economy and emissions data

    Not found

    466 units

    JC08: 39 units [1]

    WLTC:427 units [3]

    0 units

    0.0%

    Improper alteration of
    temperature/ humidity data in
    the emissions testing room

    Not found

    466 units

    JC08:39 units

    WLTC:427units

    0 units

    0.0%

    Data judged valid despite deviations from stipulated test conditions

    Speed trace deviation

    Found

    1,875units

    JC08:1,472 units [2]

    WLTC:403 units [4]

    72 units

    JC08:72 units

    WLTC:0 units

    3.8%

    JC08:4.9%

    WLTC:0.0%

    Temperature/humidity
    deviation

    Not found

    466 units

    JC08:39 units

    WLTC:427 units

    0 units

    0.0%

    Failure to calibrate emissions
    gas analyzer

    Not found

    5,310 units

    JC08:5,285 units

    WLTC:25 units

    0 units

    0.0%

     

    Mazda Canada Inc. is responsible for the sales and marketing, customer service and parts support of Mazda vehicles in Canada. Headquartered in Richmond Hill, Ontario, Mazda Canada has a nationwide network of 164 dealerships. For additional information visit Mazda Canada's media website at www.media.mazda.ca.

    *A situation in which vehicle speed deviates more than the permitted amount from the speed trace pattern prescribed by the test mode

     

    SOURCE Mazda Canada Inc.

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