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by YSFEJ4SWJUVU6 3238 days ago
In certain contexts, certainly.

Modern small cars with small engines can be quite fuel efficient in highway driving, though, and there 40 mpg isn't quite the very top. A month ago or so I did a trip in a 2016 Seat Toledo (petrol, non-hybrid), and the drive computer reported the consumption as 3.9 L/100 km after 150 km of driving at speeds from 60 to 100 km/h, averaging IIRC 78 km/h.

A 80 km strip at 120 km/h increased the average to 4.2 L/100 km.