Driving out of city definitely good for the car. Now I'm based in Seremban but travel back to KL every weekend. I don't travel much while in Seremban.

Car Type: Proton Saga LMST 1.3 (Carburetor/Magna/whatever) 2004
Driving Condition: Highway 85% City 15%
KMs: 480km
RM: 80 (full tank)
Ratio: 0.167/KM
RM1: 6km

No mod to engine. Average highway speed 110 - 120.