AdBlue consumption varies from vehicle to vehicle, but Volkswagen estimates a Passat will get through about 1.5 litres every 620 miles, for example. Much like fuel, though, the harder and faster you drive, the more AdBlue you’ll use.
Fortunately, because AdBlue is injected into the exhaust gases in such small quantities, you shouldn’t find yourself topping up too often. With most AdBlue tanks holding around 10 litres or more, many drivers will find AdBlue refills taken care of during their car’s annual service.
Jan. 7th, 2018