Burning Smell From Car: Explained

Be it burning plastic or burning rubber, a burning smell coming from your car isn’t just unpleasant – it's a warning sign.

Read on and learn about the different types of burning smells your car can produce and what these mean for your vehicle’s health.

Burning Oil Smell From Car

If you can smell hot oil, this usually means that oil is leaking and settling on a hot part of the engine or exhaust system.

You should check your dipstick for an indication of your car’s oil levels and look under your car for any signs of a leak.

Be sure to have the problem repaired by a professional mechanic soon, or else your vehicle could be in for a lot more damage.

Car Smells Like Burning Oil But Isn't Leaking

If your car smells like burning oil but there’s no leak, then any of these issues could be the cause:

• Seized brakes

• Low engine oil

• Overfilled engine oil

• A burning clutch

• Failing electrical components

A professional mechanic will be able to determine the cause and provide a solution for you.

Burning Smell From Car But Not Overheating

If you can smell burning from your car but it isn’t overheating, then any of the following issues could be the cause:

• A clogged catalytic converter

• A loose belt

• A coolant leak

• A burning clutch

• Seized brake caliper

• Rodents in the engine

• A bad alternator

• A faulty AC compressor

• A fluid leak

• Old engine oil

Different engine and exhaust system faults can result in different types of burning smells.

A mechanic will be able to determine the cause of the smell for you.

Car Smells Like Burning Rubber

If you smell burning rubber, then there’s probably a serious issue that needs some attention.

A burning rubber smell can point to any of the following problems: 

• An overheating clutch

• Worn out brakes

• Leaking coolant or engine oil

• A damaged drive belt

• An electrical fault

• Debris in the engine

How to fix it 

How you get rid of the burning rubber smell will vary depending on the underlying cause. 

If your clutch is slipping or faulty, then a clutch replacement may be required.

Certain brake components may need to be professionally replaced if they are sticking, like the brake calipers or brake pads.

If the drive belt is to blame or you’ve noticed any leaks, likewise, a professional mechanic will need to take a look at the problem.

You could also smell burning rubber if your tyres are over-inflated or misaligned – so proper inflation and correct wheel alignment is key.

If your tyres are damaged, you will need to invest in a replacement.

Regardless of the issue, you should not drive your car if you smell burning rubber, as the issue could lie with a vital component that could compromise your safety on the road.

Car Smells Like Burning Carpet

If you can smell burnt carpet during normal driving, then your brakes are probably to blame.

Your brake pads could be dragging if something has broken or become misaligned.

As brakes are an essential component for your vehicle’s safety, you need to have this checked by a mechanic right away.

Car Smells Like Burning Plastic

A burning plastic smell can occur if a plastic part comes loose in the engine and is affected by extreme heat.

Worn brake pads – or brand new ones that are still to be used – can also be the cause.

In the case of new brake pads, you should open the windows to let the fumes out.

Burning Smell From Car Heater

If you smell burning plastic coming from your car heater, then the issue could be an overheated clutch or brakes.

The issue could also be burning oil.

To fix this problem, you will need to have the failing part replaced.

If the smell is non-plastic burning, then it is possible that leaves or other materials have built up in the heater box – though the cabin air filters in most modern vehicles should prevent this.

A professional mechanic will be able to advise you further.