When AdBlue was first introduced into cars it was assumed that the dealer would fill up the tank at each service. However, as service intervals have extended, it’s quite likely that at some point you’ll need to top up the tank yourself. The time between top-ups obviously depends on the size of the tank and how many miles you cover, but it’s also impacted by driving style. Just like with fuel consumption, rapid acceleration, interspersed with sharp braking, will use more AdBlue than a smoother driving style.
Your car will let you know as you use the AdBlue reserves in the tank, and will prompt you to fill up when the liquid gets below a certain level.