Diesel Exhaust Fluid (DEF)
For some of our diesel range, we have introduced new technology to our engines to improve air quality and meet EU6 emissions legislation, which further reduces the levels of NOx emitted by the exhaust system.
What is Diesel Exhaust Fluid?
Diesel Exhaust Fluid (DEF), or often called AdBlue, is a combination of urea and de-ionised water, which is stored in a separate tank in the car.
Put simply, AdBlue is injected into the exhaust system to react with harmful nitrogen oxides (NOx), turning them into nitrogen (N2) and water (H2O).
This technology has been used for several years in commercial trucks, and in recent years has seen increasing adoption in passenger car engines.
AdBlue is sold at most fuel station forecourts, and Volvo dealers can also supply refills.
How much will the car consume?
Consumption varies and is dependent on your driving style. From the factory, all cars requiring AdBlue will have a full tank (Volvo AdBlue tanks range from 11.5 to 16 litres). However, it is likely that a mid-service top up will be required, together with further refills when the car is serviced.
What happens if the car runs out of fluid?
There is a gauge in the car, and a warning light will illuminate from when there is only enough fluid remaining for 1,500 miles of driving. When the light first illuminates, up to 10 litres of fluid can be added to the tank.
If the car runs out of fluid during a journey, then the engine will continue to run but will not restart after it is switched off. At least three litres/1,500 miles of AdBlue have to be added to enable continued running of the car. However, in an emergency, one litre can be added to provide a range of 50km (31 miles) to enable a larger top up.
How easy is it to refill?
It is straightforward if top-up bottles with an AdBlue tank connector are used. Fluid can be purchased in varying sizes and must meet ISO-22241 specification. The most popular top up for customer use is the 1.89-litre version. For the Volvo range, the top-up location is next to the fuel filler.
If a top up is carried out using containers without the correct connector, then there is a high risk of spillage.
AdBlue must not be added to the fuel tank. If you have accidentally added AdBlue to the diesel fuel tank, do not start the engine, and contact either Volvo Assistance or your Volvo dealer.
Refer to your vehicle handbook on instructions on how to fill the car’s AdBlue tank.
AdBlue refill for £29.10*
*At participating Volvo dealers, an AdBlue refill is available for a recommended retail price of £29.10.
Is the fluid hazardous?
Although AdBlue is non-hazardous, if it comes into contact with any part of your body, or if it is consumed by accident, please refer to the advice on the packaging and seek medical advice. If AdBlue comes into contact with the car’s paintwork, simply wipe it off and rinse the area with soapy water. However, AdBlue can stain upholstery and clothing – if spilt, it should be removed immediately using cold water and a damp cloth.