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Why does my Nissan smell bad? 

By Product Expert | Posted in FAQs, Service, Tips & Tricks on Monday, February 26th, 2018 at 4:01 pm
man plugging nose

Have you ever noticed a mysterious odor coming from somewhere in your car? Oh, it’s just that old fish you forgot about after a day on the water. Wait, something still smells funky. Take that trash bag out of your back seat. Man, how filthy is your car? Is there still a bad smell? Well, unless it’s just lingering from your nasty habits, it could be a problem with your Nissan. Keep reading to learn about what causes some bad odors in your car. 


You might also like: Why is my Sentra vibrating? 


Oil leak 

A recognizably putrid stink is burning oil. Oil leakage is a relatively common occurrence and it doesn’t usually mean anything too serious. However, when oil leaks it can sometimes burn when it hits your exhaust system. A sign of burning oil, other than the smell, is a blueish, smoky cloud coming from under your hood. Get the leak patched up and these problems will subside quickly. 

Heater core 

If your heater core is leaking, it may cause a sweet, syrupy smell. This odor will be most noticeable when your heat is turned up all the way. This smell comes from your antifreeze and it can also cause a filmy fog on your Nissan’s windshield. 


How to avoid being in a car accident 


Catalytic converter 

A busted catalytic converter can often result in the stench of sulfur whenever the engine is turned on. The catalytic converter is meant to control emissions and when it doesn’t work right, the inside of your Nissan ends up smelling like old eggs. It isn’t really an indication of a serious problem, it just causes a very unpleasant smell. 

Brakes or clutch 

If you get a harsh smell invading your nostrils when you apply your brakes, it could mean your brakes or clutch have become burnt. Leaving the parking brake on or riding the brakes are common causes for this and a brake replacement or repair will solve the issue. 


Contact us 


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4 Responses to “Why does my Nissan smell bad? ”

  1. Randy Morrow says:

    You car smell tells you whether your car is sick or not. If the smell is normal, then it means your road companion is healthy. Similarly, if the fragrance goes a bit off, then you can guess that your vehicle is suffering from a health malady. Depending on the health discomfort, the smell will vary. Only by servicing the intermediary in an effectual way, you can eliminate that unwanted odor. Servicing should be done at an authorized shop for a better consequence. Since I am the owner of a Volvo, that’s why I used to service my Volvo at a licensed repair point for keeping it safe and serviceable.

  2. Janet Chua says:

    Sometimes bad odor comes from our car. This is due to a variety of reasons. At times oil is leaked from the car, sometimes it burns after hitting the exhaust system. The burning oil is bluish in color and it forms a smoky cloud. Catalytic converter is meant to control emissions. So when it does not work properly, then bad smell comes out from the car. when we get a harsh smell while applying brakes, it indicates that brakes or clutch have become burnt. Leaving the parking brake on or riding the brakes are common causes of this and we can solve this issue by replacing the brakes. For replacement of brakes of your Volkswagen, you may refer to:
    https://santacruzeuropeanauto.com/santa-cruz-volkswagen-repair/.

  3. Amy Zahirski says:

    Sometimes bad car smell comes out from the car. A musty mildew smell comes out from the car due to wet carpets. If turning on the air conditioner forms a musty smell from the vents, then molds or mildews have probably formed in the ac system. Sometimes rotten egg smell comes out from the car. That is due to bad catalytic converter. The root cause is an engine or emission system problem which has caused the converter to overheat. At that time we have to replace the catalytic converter at a trusted and certified auto repair center. For this you may contact:
    https://www.mechanicsdirect.com/contactus.

  4. Koke starr says:

    My Bluebird Mr20 has two major problems.
    1) bubbly dashboard
    2) strong petroleum smell in the cabin day or night. (Maybe coming off the dash)
    – no visible leaks under the car when left standing for extended periods of time.

    Please assist, breathing is difficult , almost impossible with the windows up.

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Adjust Payment Terms ×

We want to help you find the perfect car that fits your budget. Please adjust the options below so we can estimate the most accurate monthly payments.

Estimated Credit Score or Interest Rate

Desired Loan Term (months)

How much will you put down?

All tax, title and vehicle registration fees are additional. See dealer for complete details.