Why Does It Smell Like Rotten Eggs In My Car

If you’re wondering why your car smells like rotten eggs it could be due to a variety of reasons. The most common cause is a problem with the catalytic converter. This part of the car’s emissions system helps to reduce pollutants in the exhaust. If it’s not working properly it can cause a sulphur smell.

Another possibility is a leaking exhaust manifold. This can cause a burning sulphur smell which might be mistaken for a rotten egg smell.

If you’re certain the smell is coming from inside the car and not the engine it could be due to a number of things. For example if you have rotten food in the car that could be the source of the smell. Or if you have a pet that rides in the car their fur could be the culprit.

Whatever the cause a rotten egg smell in your car is definitely not normal. If you can’t identify the source of the smell it’s best to take the car to a mechanic to have it checked out.

Table of Contents

Why does it smell like rotten eggs in my car?

There are a few different reasons that your car may smell like rotten eggs.

It could be a problem with the catalytic converter the exhaust system or the sulfur in the gasoline.

What is the cause of the smell?

There are a few different reasons that your car may smell like rotten eggs.

It could be a problem with the catalytic converter the exhaust system or the sulfur in the gasoline.

How do I get rid of the smell?

If the smell is coming from the catalytic converter you’ll need to take it to a mechanic and have it replaced.

If the smell is coming from the exhaust system you’ll need to have it cleaned or repaired.

If the smell is coming from the sulfur in the gasoline you can try using a different brand of gas.

Will the smell go away on its own?

No the smell will not go away on its own.

You’ll need to take care of the problem to get rid of the smell.

Is the smell harmful?

No the smell is not harmful.

However it can be very unpleasant.

My car only smells when I turn on the heater.

Is this a problem?

Yes this is a problem.

The smell is likely coming from the heater core.

You’ll need to take your car to a mechanic to have it fixed.

I only smell the smell when I’m driving.

Is this a problem?

Yes this is a problem.

The smell is likely coming from the catalytic converter or the exhaust system.

You’ll need to take your car to a mechanic to have it fixed.

I only smell the smell when the car is first turned on.

Is this a problem?

Yes this is a problem.

The smell is likely coming from the catalytic converter or the exhaust system.

You’ll need to take your car to a mechanic to have it fixed.

The smell seems to be coming from the passengers floorboard.

Is this a problem?

Yes this is a problem.

The smell is likely coming from the heater core.

You’ll need to take your car to a mechanic to have it fixed.

Will the smell go away if I use a different brand of gasoline?

Maybe.

If the smell is coming from the sulfur in the gasoline using a different brand of gas may help.

However if the problem is with the catalytic converter or the exhaust system changing the gas will not help.

I noticed the smell after I filled up my gas tank.

Is this a problem?

Maybe.

If the smell is coming from the sulfur in the gasoline it may just be a temporary problem.

However if the problem is with the catalytic converter or the exhaust system changing the gas will not help.

I noticed the smell after I had my oil changed.

Is this a problem?

No.

The smell is not coming from the oil.

I noticed the smell after I had my car detailed.

Is this a problem?

No.

The smell is not coming from the detailing.

I’ve had the smell for a while and it’s starting to make me nauseous.

Is this a problem?

Yes.

If the smell is making you nauseous you should see a doctor.

What should I do if the problem is with the catalytic converter or the exhaust system?

You’ll need to take your car to a mechanic to have it fixed.

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