Update after 1st tank: The low fuel light came on at about 850km, then kept driving for another 60km and crusing range dropped from 25km to 0km instantly, kept driving for another 40km+ because my calculation told me my range should be more than 1100km with 5.5L/100km fuel consumption and 65L tank. Since this is my first tank, I don't dare to go any further and refuelled at about 953km. The refuel volume is about 56L, which means there is still 9L in the tank! My conclusion is the low fuel indicator in TCH is even more conservative than Honda Civic Hybrid and its cruising range reading is very unreliable. Next time I could go 200km more after the light is on depending on the fuel price cycle.