The number of catalytic converters in a car depends on the manufacturer. However, most vehicles have a single cat converter that is designed to reduce emissions in the exhaust system by breaking down harmful gases.

The most common type of catalytic converters use a combination of chemical and physical processes to convert pollutants into less harmful substances. They use a catalyst, which is made from platinum or palladium, and a substrate, which is usually alumina or zirconia.

They are a very important part of the vehicle's exhaust system because they help to clean up emissions, which can cause problems for the environment and people in the surrounding area. They are also required by law in most countries for vehicles that are driven on public roads.

There are several reasons why a catalytic converter may fail or start to leak exhaust gas from the tailpipe. For one, they can get clogged by soot and other particles. Another reason that a catalytic converter can fail is due to rust and corrosion.

It's a good idea to check your catalytic converter every time you have your vehicle serviced or when you notice any signs of a problem. Getting the right diagnosis is essential in order to prevent costly repairs.

Catalytic converters are required for all new cars sold in the United States. If you drive a car that doesn't have one, you can be fined.

You should also be aware that thieves are increasingly targeting catalytic converters on vehicles. According to a recent report from the National Insurance Crime Bureau, there has been an increase of 1,215% in catalytic converter thefts since 2019.