Nissan admits to irregularity in emissions testing process

Nissan admits to irregularity in emissions testing process

9th Jul 2018 4:28 pm

Carmaker’s internal investigation reveals that inspection reports for emission and fuel economy were based on a deviated testing environment.


Japanese carmaker Nissan has reported that proactive initiatives by it to prevent testing irregularities have revealed just that – misconduct in reporting emissions data.

The brand stated that there have been irregularities in its exhaust emissions testing procedure in Japan and submitted related information to the Japanese ministry of land, infrastructure, transport and tourism.

The brand alleges to have discovered ‘nonconformities’ in its final inspection process back in September 2017 and has since carried out an internal investigation into how the discrepancies came about.

Reuters reports that both Nissan and sister brand Renault's shares have fallen since the announcement.

A statement released by Nissan admits that emissions and fuel economy tests “deviated from the prescribed testing environment” and the “creation of inspection reports based on altered measurement values”.

The misconduct was discovered through “proactive initiatives to prevent recurrence of such issues”, although the company wouldn't explain why these initiatives were launched when they were.

Nissan has commissioned a law firm to investigate the issue and implemented its own preventative measures to ensure that a similar issue doesn’t occur in the future.

Nissan has clarified that none of its cars strays from its advertised fuel economy and emissions figures and that it will continue to search for areas of non-compliance, taking the necessary steps if more are uncovered.

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