Reducing car emissions is one of the most effective actions we can take to combat climate change and improve air quality where we live. In addition, excessive polluting gases are the third leading cause of failure in vehicle inspection (ITV) tests, so it is wise to keep vehicle emissions under control.
Keeping the car in top condition or practising eco‑driving are highly recommended habits for reducing pollutant emissions and being able to pass the ITV with ease. Let’s explore both approaches in depth in this new article from Ralarsa, your car glass specialist.
Why is it important to reduce your car’s gas emissions?
One of the most important checks a vehicle must undergo to pass the ITV successfully is the emissions test. This test is crucial not only for safe driving but also for protecting the environment, public health, and reducing greenhouse gases.
The aim of the test is to ensure the emissions produced by vehicles are within acceptable limits set by European regulations by analysing the exhaust gases from the internal combustion process.
How does the ITV emissions test work?
The ITV emissions test is a measurement process in which specific parameters are analysed, differing between petrol and diesel engines. The tester will insert a probe into the exhaust pipe and ask the owner to hold the engine at around 2,500 rpm for roughly 30 seconds.
In petrol vehicles, the test mainly analyses carbon monoxide concentration, while in diesel cars it measures the opacity of the exhaust gases. The greater the opacity, the higher the level of pollutant particles.
To pass the test, petrol cars without a catalytic converter registered before 1 October 1986 must not exceed 5% VOL of carbon monoxide. The figure drops to 3.5% for those registered after that date.
For petrol cars with a catalytic converter, the maximum authorised emissions are those specified by the manufacturer, and if unknown, the legal limits are 0.3% for cars registered before July 2002 and 0.2% for newer vehicles.
Tips to reduce your car’s emissions
At Ralarsa, as a workshop specialising in vehicle care, we understand the importance of maintenance in reducing a car’s emissions. Here are some tips to help you pass the ITV successfully:
Keep your car in top condition
Several components directly impact the level of gases emitted:
- Tyres. Under‑inflated tyres can increase fuel consumption by 3%. Lower pressure means more friction on the road surface and, consequently, greater engine effort.
- Catalytic converter. Nearly all modern cars have one – it reduces pollutant emissions from the combustion process. Replace it every 100,000 km to avoid deterioration.
- Exhaust pipe. Make sure it is free from rust holes or broken seals; air leaks alter the composition of exhaust gases, making them more toxic.
- Spark plugs. In petrol engines (and glow plugs in diesels), these should be checked regularly to ensure efficient combustion.
- Oil filter. Oil reduces smoke, and in diesel engines captures combustion residues. Delaying oil changes can saturate the filter and increase emissions.
- Brake fluid. Over time, it absorbs moisture, causing it to heat up more quickly and lose effectiveness, requiring harder braking and producing harmful particles.
Regularly checking these vehicle components and carrying out timely maintenance will help keep emissions as low as possible.
Practise eco‑driving
To reduce vehicle emissions, drive smoothly, avoid sudden braking and acceleration, and use higher gears and lower revs whenever possible.
Run the engine harder before inspection
If you are concerned about emissions before an ITV test, driving at higher revs for around 35 km can help burn off carbon deposits in the exhaust and engine.
At Ralarsa, we share everything you need to know about getting your car ready and keeping it in top condition. With over 40 years at the forefront of the car glass repair and replacement sector, we are ready to give you the best advice on caring for your vehicle and lowering emissions easily and effectively. Visit our blog for more recommendations!
