fuel efficiency
noun[U]
NATURAL RESOURCESukus(alsofuel economy)
therelationshipbetween theamountoffuelacaruses and thedistanceittravels:
Hybrids can give up to 40%betterfuelefficiency,dependingon how they aredriven.
ameasureof how muchenergyisproducedby anengineinrelationto theamountoffuelthat it uses:
Dieselenginesgenerallyhavebetterfuelefficiencythangasones.