Skip the auto shop - Our mechanics make house calls

What Are the Dangers of a Vehicle With a Bad Exhaust System?

bad exhaust

Your car’s exhaust plays a vital role in several different things. It affects engine performance. It reduces noise while driving. It also protects you from potentially lethal carbon monoxide fumes. If your car’s exhaust has seen better days, there are several potential dangers that you might be facing.

The dangers of a bad exhaust system

  • Carbon Monoxide Poisoning: If your car’s exhaust is leaking badly enough, or in the right place, it’s very possible that carbon monoxide will enter your car. If the windows are rolled up, this can actually be lethal. Even with the windows down, it can make you feel very sick.

  • Low Fuel Economy: Your engine needs a working exhaust system to perform correctly. If your exhaust is leaking or otherwise damaged, you will experience reduced gas mileage.

  • Poor Performance: Exhaust system back-pressure is necessary for your engine to run right. If there’s a significant leak in the system somewhere, it reduces backpressure, and can negatively affect your engine’s performance. You might experience spitting and sputtering, a lack of power, or even stalling in a worst-case scenario.

  • Check Engine Light: If your exhaust system isn’t up to snuff, you can bet that your Check Engine Light will come on and stay on. While that might not be cause for concern right away, it means that you won’t be notified if something else goes wrong.

  • Emissions Testing: As a final note, you must have a working exhaust system in order to pass emissions testing. If your car doesn’t pass the emissions test, you won’t be able to legally drive it until the problem has been repaired.

As you can see, there are several potential dangers from a vehicle with a bad exhaust system. It’s not just about noise – it’s about reliable performance and protecting your health.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

Insurance Requirements for Car Registration in Kentucky
The Kentucky Transportation Cabinet requires that all drivers in Kentucky carry liability automotive insurance, or “financial responsibility” in order to operate a vehicle legally and maintain vehicle...
How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...
The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Shutterstock.com Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore....


Related questions

Q: How Do I Prepare for My Car's Emissions Test?

The purpose of emissions test is to assist in keeping the air breathable and clean by requiring that vehicle emissions systems are working properly. When the emissions system is working properly, the amount of harmful pollutants that are emitted into...

Q: Not sure what the issue might be?

Hi there. Sounds like there is an exhaust leak on the exhaust system. Check the exhaust manifolds and the exhaust coupler seals (referred as donuts) and see if they are leaking. Replace any gaskets that are leaking. If you need...

Q: Is a Vehicle With a Bad Exhaust System Dangerous?

In most states in the USA, if you have an exhaust leak, you will fail that state’s annual safety inspection. The vehicle will then be rejected for safety due to exhaust gases such as NOx, carbon monoxide, and many other...