AdBlue Maintenance

Some Euro6 Diesel Engines, including Land Rover’s Ingenium series as fitted to the Discovery Sport and Range Rover Evoque from MY 2016 onward, require the use of AdBlue to fully meet the pollution and emissions targets.

AdBlue is a colourless (until some manufacturers add blue dye), odourless and non-flammable fluid that is stored in a separate tank under in the vehicle and topped up via a smaller filler, usually mounted next to the main diesel filler or under the bonnet (check your handbook for exact location). The fluid is injected into the exhaust system while the engine is running to neutralise some harmful gases.

AdBlue is basically a mix of water and urea that can help reduce Nitrogen Oxide (NOx) by up to 90% using a Selective Catalytic Reduction system. The fluid is injected in microscopic amounts into the exhaust gas. The combination of these elements acts to break up the gasses into harmless nitrogen and oxygen.

Adblue is usually store in sufficient quantities to last between regular service intervals so will require no intervention on your part. We will just top it up when your Range Rover Evoque or Discovery Sport is in for its next service. However we do offer intermittent top-ups if required and these can be done while you wait at either of our Maidenhead or Peterborough branches.

If your AdBlue needs replenishing prior to its next service you will see a warning light appear on the dashboard that the level of AdBlue is getting low. You can top it up yourself using one-litre bottles from any car accessory outlet, however your vehicle may require you to fully top up the tank to dismiss the dashboard warning light.

For Land Rover and Range Rover vehicles the warning will appear on the message centre. The first will advise that a top-up is advised. This will progress to an AMBER warning that states the AdBlue needs to be replenished. Following that a countdown will commence indicating how many miles you have left. If you are unable to refill the AdBlue before it runs out your car will then fail to start.


Euro 6 is a piece of European Legislation aimed at making cars more environmentally friendly by limiting their exhaust emissions. The legislation sets restrictions on how much nitrogen oxide (NOx) and hydrocarbon gases may be emitted per kilometre by a road vehicle.

Petrol and diesel cars are subject to different restrictions under the new Euro 6 legislation. For diesel cars, the permitted level of NOx emissions has been brought down to 80 mg/km (from 180 mg/km), while the permitted level of hydrocarbons emissions has been brought down to 170 mg/km (from 230 mg/km). The permitted level of NOx emissions for petrol cars remains at 60 mg/km, while the permitted level of hydrocarbons emissions remains at 100 mg/km.

From 1st January 2015, all newly introduced vehicles must meet Euro 6 standards. This includes any new models on the market, for example: Discovery Sport. Vehicles already on sale must comply with Euro 6 by 1st September 2015, but;

Individual vehicles already on sale that were built by, and dispatched from, the manufacturer before 1st June 2015 can continue to be sold until 1st September 2016. However, the manufacturer must apply for derogation in these instances.

Please contact our Service Team to book your vehicle in to check and top up your AdBlue.