For general knowledge. My recent back-to-back road trips FC on 2.0l SX:

1. Trip south to JB, lowest speed 100km/h, highest speed 140km/h, average speed 120km/h, lowest FC number is 7.2 l/km

2. Trip northwest to Cameron, lowest speed 30km/h (Tapah - Cameron road), highest speed 160km/h (short distance), average speed 100km/h, lowest FC number is 8.3 l/km.