Translate the following English sentence to French:
"However, the arguments of the plastics and car industries would be more persuasive if a commitment were to be given to reducing CO2 levels in Europe in other sectors besides these."
Mais le pouvoir de persuasion de l'industrie pétrolière et automobile augmenterait si, en Europe, on ne s'engageait pas en faveur de la réduction du CO2 dans ce seul contexte.