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Why Is Blue Smoke Coming From the Exhaust? (Explained)

Updated: Jan 9

Exhaust smoke is a common sight on the road, and it can come in a variety of colors. White smoke is generally caused by water entering into the exhaust, while blue smoke indicates an issue with the engine, usually oil leaking into the exhaust.

Blue smoke from the exhaust is a sign of an oil leak in the engine. Have the vehicle checked for issues like leaking valve seals, damaged piston rings, or worn cylinder walls. Continuing to drive with an oil leak can cause further damage to the engine.

In this article, we'll take a closer look at the causes of blue smoke from the exhaust, as well as some possible solutions for fixing it.


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smoke coming from a car exhaust tip

Causes of Blue Smoke From the Exhaust

There are a few different reasons why blue smoke might be coming from your exhaust. Some of the most common causes include the following.