Question 1

What is a catalytic converter and what does it do?

Accepted Answer

The catalytic converter is a component of the exhaust system that reduces harmful engine emissions. It transforms toxic gases (CO, HC, NOx) into less harmful gases (CO2, H2O, N2) through chemical reactions. It is mandatory on all modern vehicles to comply with emissions regulations.

Question 2

How do I know if my catalytic converter is faulty?

Accepted Answer

The most common symptoms are: loss of engine power, increased fuel consumption, metallic noises in the exhaust, check engine light on, and MOT failures due to high emissions. If you detect these symptoms, an inspection is recommended.

Question 3

Are replacement catalytic converters type-approved?

Accepted Answer

Yes, all our catalytic converters comply with European type-approval regulations (E-Mark). They are certified to pass MOT tests and meet Euro 4, Euro 5 and Euro 6 emissions regulations depending on the vehicle model.

Question 4

How long does a catalytic converter last?

Accepted Answer

A catalytic converter can last between 120,000 and 160,000 km under normal conditions. However, poor engine maintenance, use of low-quality fuel or injection system failures can significantly reduce its lifespan.

Question 5

Can I drive without a catalytic converter?

Accepted Answer

No. Driving without a catalytic converter is illegal in the UK and Europe, as the vehicle does not meet emissions standards. Additionally, it will fail the MOT test. Fines for driving without a catalytic converter can reach £1,000 and vehicle immobilisation.