Renault to bring emissions-system updates to improve its diesels image

The French automaker has developed some updates to cut emissions levels on real-world driving conditions for its Euro 6 diesels.

Following Volkswagen’s diesel scandal, the French government formed an independent technical commission to verify whether local car manufacturers have not installed equivalent devices in their cars. In January, fraud investigators have inspected three of Renault’s sites to look if the French carmaker has used any sort of cheating devices, for the officials to summon the company afterwards to give further explanations on why emissions from some of its models exceeded the limits. The results of the inquiry enforce Renault to recall more than 15,000 of its small Captur crossovers – 110-horsepower diesel models – to adjust their pollution filtering systems that are activated only in temperatures between 17 degrees and 35 degrees Celsius. The Diamond brand also committed at that time to make voluntary emissions-system updates for about 700,000 vehicles from this summer.

The French automaker recently announced it developed those promised improvements aimed to reduce the nitrogen oxide (NOx) emissions on its diesel EURO 6b models for real-world driving conditions and they will start implementing them from July. Two changes to the anti-pollution systems have been made: extension of the operating range of the exhaust gas recirculation systems and performance improvement of the NOx trap which allows, in addition to the EGR, the storage and processing of nitrogen oxide at regular intervals.

The new Euro 6b diesels will include these features as standard and the existing ones will progressively include the updates in production, starting from July 2016. From October, Renault said that customers having already taken delivery of a Euro 6b diesel can request for these changes to be applied free of charge via a visit to their dealer.