1) Model: Wira SE 1.5 Manual
2) Petrol Used : Primax 3
3) Engine Oil Used : Synthium 800 (semi synthethic)
4) Fuel : full tank, ~40L (or RM77)
5) Driving Condition : 70% City Driving, 30% Highway
6) Average Speed : max 90km/h for city, max 110km/h for highway
7) Mileage : 550km
8) Modification : None

well, there are several rules that i followed:
1. not overstep your fuel pedal to get more speed in short time.
2. service on time.
3. make sure your rpm is not more tham 3500 at any time (dunno wheter true or not).
4. not speeding

oh btw, my car is just 1.5 years