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Find your nearest AdBlue®

AdBlue® outlets for passenger cars and vans





FindAdBlue App for passenger cars is available for free at App Store and Play Store


What is AdBlue®?

AdBlue® is a water-based and non-toxic liquid that reduces the harmful nitrogen oxides in diesel vehicle exhaust by up to 90%. Vehicle manufacturers are using AdBlue® to meet the Euro 6 emission standard for cars and vans.

AdBlue® is stored in a separate tank in the vehicle. However, unlike diesel fuel it is not burned in the engine, but injected directly into a specially modified part of the exhaust. This begins a chemical reaction which removes the polluting oxides of nitrogen (NOx), converting them into harmless water and nitrogen in an advanced technology called Selective Catalytic Reduction (SCR).

AdBlue® can be used in all weather conditions

AdBlue® freezes at -11 °C, and if temperatures drop even lower, your car has heating systems which ensure the reliable operation of the SCR system.

Top up yourself

You can refill the AdBlue® tank with suitable bottles/canisters or at specially-designed pumps available at an ever-increasing number of filling stations. gives you the information you need to find the nearest filling station offering AdBlue® in a convenient way.

Non-toxic & odourless

AdBlue® is an odourless, non-toxic urea solution which is automatically injected into the exhaust gas system.

IMPORTANT - AdBlue® is not a fuel additive!

AdBlue® must only be poured into the vehicle’s separate AdBlue® tank – never put AdBlue® into the diesel fuel tank. Do not mix AdBlue® with any additives and do not dilute AdBlue® with water. If you put AdBlue® in your fuel tank by mistake, please do not start the engine. Contact your dealership for help.

SCR Technology

AdBlue® is an operating fluid which is injected directly into the hot exhaust gases before the SCR catalyst.In this SCR catalyst, the urea in AdBlue® is converted into ammonia, which reacts at the surface of the catalyst with the nitrogen oxides in the exhaust gas to produce harmless nitrogen and water. This technology is known as Selective Catalytic Reduction, or SCR for short.

SCR is applicable to diesel engines, reducing NOx emissions to near zero. Additional advantages are:

  • Reduced CO2 emissions and improved fuel efficiency
  • Improved air quality relating to NO2, particularly in cities

AdBlue®/SCR technology allows you to enjoy diesel engine performance without worrying about environmental impact.

The size of the AdBlue® tank fitted to your vehicle will depend on the brand and model you have. Therefore the intervals between top-ups will vary. In addition, many factors such as vehicle load, driving style, climatic conditions, traffic flow and road condition can influence how much AdBlue® is consumed. Like fuel, the more economically you drive, the less AdBlue® you will use. As a rough guide, if you drive every day then you will need to top up the AdBlue® tank several times a year. For more information, please contact your dealer.

Selective Catalytic Reduction

Selective Catalytic Reduction

Urea in the AdBlue® (1) releases ammonia (3 - NH3) into the hot exhaust gas and this ammonia reacts with nitrogen oxides (2 - NO and NO2) in the catalytic converter to form harmless nitrogen (4 - N2) and water vapour (5 - H20).

Environmental Benefits

By owning a vehicle with AdBlue® & SCR technology you are helping to reduce harmful nitrogen oxide (NOx) emissions thus reducing your environmental footprint and improving air quality.

Frequently Asked Questions

AdBlue® (also called Diesel Exhaust Fluid) is an odourless, colourless, clean, and non-toxic fluid that consists of 32.5% ultra-pure urea and 67.5% deionised water.

AdBlue® freezes at -11°C. A 32.5% concentration was chosen for AdBlue® because it is the lowest freezing point of a urea-water solution. AdBlue® tanks are equipped with a heater that will defrost sufficient fluid for the emission reduction to operate under all conditions.

The composition of AdBlue® is defined by the international standard ISO-22241, and the word AdBlue® is a registered trademark of the German Association of the Automotive Industry (VDA).

SCR means Selective Catalytic Reduction and is a technology used for removing nitrogen oxides (NOx) from the exhaust of diesel engines. It is based on AdBlue® (also called Diesel Exhaust Fluid), an operating fluid which is injected into the hot exhaust gases.

The high exhaust temperatures convert the urea in the AdBlue® to ammonia (NH3) and this ammonia reacts with nitrogen oxides (NO and NO2) in a catalytic converter to form harmless nitrogen (N2) and water vapour (H2O). The system is carefully controlled by sensors to ensure optimum NOx destruction and efficient AdBlue® usage.

No other emissions control technology is able to deliver the latest requirements for clean diesel engines. SCR technology is particularly well suited to controlling harmful emissions during real-world driving conditions such as fast acceleration and highway driving.

Most cars and vans have a blue filler cap for AdBlue® next to black diesel cap under the fuel filler cover. Some earlier SCR models have the AdBlue® filler positioned in the boot/trunk (near the spare wheel) or engine compartment (similar to windscreen wash). If you are unsure, check your user manual.

Never use containers or funnels to refill the AdBlue® tank that have been used for other fluids such as fuel. This small amount of contamination may damage your vehicle.

This will depend on the size of your vehicle. Typical AdBlue® consumption for cars and vans is in the range of 1.0-2.5 litres per 1000 km. Heavy-duty trucks often use more than 1000 litres per year!

The driving range depends on the individual driver profile, mileage, vehicle load and engine size. Whatever happens, an indicator integrated into the on-board computer will warn you when the fluid level is getting low and you need to top-up. You will get the first alert about 2400 km (1500 miles) before the AdBlue® tank will run empty.

You don’t need to go back to your dealer to refill the tank. Use our AdBlue® search to find a convenient supplier near you.

If the AdBlue® tank reaches empty, the car will not restart once the ignition is turned off! This is not a fault, but a required feature of the system.

If this stage is reached the AdBlue® tank will need a refill of at least 5 litres before the car can be restarted.

  • First you should check that the product you are buying shows the trademark AdBlue® clearly and has a reference to the standard ISO 22241.
  • We strongly recommend you use an AdBlue® pump designed for cars and vans, or buy an AdBlue® bottle with a sealed connector to your vehicle (usually with a screw adapter). This will prevent any spillage.

We do not recommend you refill at the AdBlue® pumps that exist in many filling stations for commercial vehicles (trucks and buses) as the flow rate is too high for passenger cars and you may experience difficulties.

In addition, many truck AdBlue® nozzles need to be released by a magnet in the filler neck of the vehicle, which is not present in passenger cars.

The good news is that there is a growing number of filling stations across Europe which offer low-flow AdBlue® pumps for passenger cars. Refilling with such a pump is as easy as refilling diesel fuel, and much cheaper than buying AdBlue® in a bottle.

If AdBlue® comes into contact with your vehicle’s paintwork, simply wipe it off and if necessary rinse the area with water.

If you ever spill some AdBlue® on your clothes or hands, just rinse out thoroughly with water.

Vehicles generally do not have this option. For each vehicle there is typically only one AdBlue® tank size that has been designed to optimize package and weight restrictions. If you are concerned about running out of AdBlue® on the road, you could keep a sealed bottle of AdBlue® in your vehicle.

AdBlue® is a registered trademark of the VDA (the German Association of the Automotive Industry). It is manufactured by many different chemical companies such as Yara and BASF, and only licensed manufacturers and distributors may use the name "AdBlue®".



FindAdBlue App for passenger cars is available for free at App Store and Play Store