What is AdBlue and Why Do I Need It?

What is AdBlue and Why Do I Need It?

Over the years, more and more cars have AdBlue, but a staggering 90% of owners don’t even know what it is! So we thought we would bring you up to speed and cover off exactly what AdBlue is, what it does and why exactly you need it.

What is AdBlue?

First up, AdBlue is only fitted to diesel cars… So if you are a petrol or electric owner, you’re off the hook!

AdBlue is a non toxic fluid, a mixture on deionized water and urea (yep a component found in wee), which your cars uses in the exhaust system to reduce nitrous oxide emissions that diesel cars produce.

What does AdBlue do?

AdBlue is working away in the background ensuring your car is within the regulated test requirements, but you’re also producing less pollution.

It came about when a regulation on emissions came into effect, called Euro 6. The technology has been used in buses and lorries for a long time and it’s effectiveness has been proven and improved over time.

Why do I need AdBlue?

It is an emissions requirement for Diesel cars these days and through SCR (Selective Catalytic Reduction) AdBlue is the liquid used to break down and reduce these emissions.

Where can I get AdBlue?

It’s important that you get the correct grade for your car. This will ensure that you don’t cause any damage to your car’s catalyst (a costly repair).

You can pick it up at most service station, some even have pumps and your owner manual will tell you how you can top it up.

If you do let it run out, most modern cars are designed to stop you from starting the car without AdBlue in it, so you don’t want to play Russian Roulette with this one!

© Copyright 2018 Ewan Lawon Motors Designed by AB Fiftyone


We are deemed an essential service and are still open to carry out essential repairs to keep your car road legal.

If your car MOT is due to expire after 30th March 2020, you will be granted a 6mth extension by the Government. At which time it will be your responsibility to make sure you remember to have it carried out.

We are operating collection & delivery if you are self-isolating, as well as working to social distancing rules in the workshop. We will be taking payment over the phone, or by bank transfer during this time.

Stay safe & look after each other!

NHS & emergency workers are entitled to FREE minor fixes & 20% off repairs