As an automotive engineer, I can tell you that a car has four catalytic converters for several reasons.
The first reason is that a catalytic converter is an emissions control device that is designed to reduce the number of harmful pollutants that are released into the environment by a vehicle’s exhaust system.
The second reason is that modern cars have multiple exhaust pipes, one for each bank of cylinders, and each pipe needs its own catalytic converter to effectively reduce emissions.
Having one large catalytic converter would not be as efficient as having multiple smaller ones.
The third reason is that having four catalytic converters allows for greater flexibility in the design of the exhaust system. This is because the converters can be placed in various locations throughout the exhaust system, which allows for more efficient emissions reduction and better overall performance of the vehicle.
The fourth reason is that the catalytic converters are designed to last for a long time, however, it is still possible for them to fail. If one of the four catalytic converters fails, the vehicle will still have three other converters that can continue to reduce emissions.
This is important because the failure of a catalytic converter can cause the vehicle to fail emissions testing, which can result in costly repairs or fines.
Which cars have 4 catalytic converters?
- Toyota Camry – The Toyota Camry is equipped with a 4-cylinder or a V6 engine and has four catalytic converters, one for each bank of cylinders.
- Honda Civic – The Honda Civic is available with a 4-cylinder engine and also has 4 catalytic converters.
- Ford Mustang – The Ford Mustang’s V8 engine uses 4 cats to reduce emissions and improve performance. It is available with a 5.0L Ti-VCT V8 engine, which delivers 450 horsepower and 410 lb-ft of torque.
- Chevrolet Silverado – The Chevrolet Silverado is available with different engine options including a V8 engine and has also four catalytic converters.
- BMW M5 – The BMW M5 features a 4.4-liter V-8 engine and four catalytic converters. The engine generates 600 horsepower and 553 lb-ft of torque.
- Mercedes-Benz S-Class – The Mercedes-Benz S-Class is equipped with a V8 engine or a V12 engine and has four catalytic converters.
- Porsche Panamera – The Porsche Panamera uses 4 catalytic converters. It is available with different engines including a 4.0-liter V-8 that delivers 542 horsepower and 568 lb-ft of torque.
- Audi A8 – The Audi A8 is available with a V6 engine or a V8 engine and has four 4 converters.
- Lexus LS – The Lexus LS equipped with a V6 or a V8 has also 4.
- Volkswagen Touareg – The Volkswagen Touareg is available with different engine options including a V6 or a V8 engine and has four catalytic converters.
If one or more catalytic converters fail, can the car still be driven?
If one or more catalytic converters from these cars that have 4 fail, it is possible for the car to still be driven, but it is not recommended.
Even though the car has multiple catalytic converters, the failure of one or more of them can result in an increase of harmful pollutants being released into the environment and the vehicle may not pass emissions testing.
When a catalytic converter fails, the vehicle’s engine may also experience a decrease in performance, increased fuel consumption, and a decrease in power. In some cases, it can also cause the “check engine” light to turn on and the vehicle to run poorly and stall.
Additionally, the failure of one or more catalytic converters can cause damage to the other parts of the exhaust system and engine, including the muffler, exhaust manifold, and engine control unit (ECU).
It is important to have a failed catalytic converter checked and repaired as soon as possible by a professional mechanic, in order to ensure the proper functioning of the vehicle and to avoid causing further damage to the vehicle’s emission control system and other parts of the vehicle.
Even though the car has four catalytic converters, the failure of one or more of them can still affect the vehicle’s performance and emissions.
In conclusion, a car has four catalytic converters for emission reduction, multiple exhaust pipes, greater flexibility in exhaust design, and redundancy in case of any failure.
It is important to note that the catalytic converters are a critical component of the vehicle’s emission control system, and regular maintenance is important to ensure they are working properly.