Renault Being Investigated for Possible Diesel Defeat Devices

January 29, 2016

Renault, the French car manufacturer, has recalled over 15,000 of its Captur cars manufactured between July and September 2015. The recall was the result of its admission that its emissions filtering system has failed to work in both hot and cold temperatures. The company must correct the filtration system on these cars, as per the regulations established by the French commission tasked to investigate vehicle emissions.

Unlike the recent scandal involving Volkswagen’s use of defeat devices, which were used in cheating emission tests, Renault has denied any wrongdoing in the matter. According to the company, the cars did not have defeat devices installed in their system but acknowledged that there was a difference between the test results and actual pollution. It has also fixed the problem for the cars that were recalled.

In Europe, emission tests for purpose of vehicle certification are conducted in an environment with an ambient temperature ranging from 20 degrees Celsius to 30 degrees Celsius.

Renault’s director of engineering ,Gaspar Gascon Abellan, said ‘the company has discovered a calibration error in its diesel engine’s emissions cutting system. This meant that the sulphur and nitrogen oxides were not being eliminated, as expected and required by the law.’

Renault has also come under scrutiny since anti-fraud investigators raided its facilities in several areas across France. Inquiries have also continued about the actual emissions generated by its cars, said emissions of which were found to be significantly above test levels.

For its part, Renault has recently announced a software upgrade designed to reduce nitrogen oxides emission from its diesel engines. This will possibly affect up to 700,000 cars already on the road; the cars have the latest Euro 6-compliant engines, which their owners should bring to the company for the voluntary upgrade.