Renault "has committed to recalling a certain number of vehicles, 15,000 vehicles, to check them and adjust them correctly so that the filtration system works" in all temperatures, Segolene Royal said on RTL radio.
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"New cars must meet the norms," she said, adding that the adjustment could be quickly done. "To correctly adjust an engine takes half a day," she added.
Renault promised Monday to come up with a "technical plan" over coming weeks to bring down harmful emissions from its vehicles after a government-appointed commission said its diesel cars failed pollution tests.
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The commission, set up in the wake of the scandal engulfing Germany's Volkswagen, tested vehicles from a total of eight foreign and French brands, finding carbon dioxide (CO2) and nitrogen dioxide emissions (NOx) from Renault cars to be too high, as well as those in some non-French models.
Renault sales director Thierry Koskas insisted the company was not cheating but acknowledged a problem had emerged between test and real road conditions.
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"In test conditions, we respect emissions norms," he said, presenting the group's 2015 results.
"But when we are no longer in test conditions, there is indeed a difference between real conditions and control conditions, that is a fact," he said.
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