AdBlue technology by BMW: reduced emissions without additional service appointments

The active tank is connected to a second reservoir, the so-called passive tank. With its additional capacity of approximately 4.5 gallons, this passive tank offers a plentiful supply of the urea solution required within the car. The average range provided on this supply capacity is indeed sufficient to have the tank system replenished as part of normal scheduled maintenance. From the active

Post Title → AdBlue technology by BMW: reduced emissions without additional service appointments