 This is important not only for mitigating economic costs within a company, but also for reducing the emissions associated to fuel consumption , mainly when the vehicles have petrol or diesel engines .
<coherence>  This is important not only for mitigating economic costs within a company, but also for reducing the emissions associated to fuel consumption , mainly when the vehicles have petrol or diesel engines .
 This is important not only for mitigating economic costs within a company, but also for reducing the emissions associated to fuel consumption .