 In normal situations, it rests statioary in 2nd gear, but it will use 1st gear when the vehicle starts moving and throttle is applied or if L position is selected in gear selector.The W4A 018 (type 720.1) was derived from the W4B 025 (type 722.1) for vans up to 5.600 kg (12,345 punds) and off road vehicles, the W4B 035 from the W4B 025 (type 722.1) and K4A 040 (type 722.2) for light trucks up to 13.000 kg (28,660 punds).The main difference is the use of straight toothed planetary gearsets instead of helical toothed ones for better fuel efficiency at the price of lower noise comfort.