What happens if you put ethanol in a gas car?
John Kim
Updated on April 01, 2026
Ethanol can cause several types of damage to the engine in your vehicle. Your vehicle's fuel intake components can be damaged. In addition, ethanol can cause damage to the fuel pump in your vehicle. These repairs and replacements can range from a few hundred dollars to more than $1,000 to take care of properly.
What should I do if I accidentally put E85 in my car?
If you accidentally filled up with E85, don't fret! While you may see the engine light turned on, you'll generally be fine once the E85 works its way out of the fuel system. Otherwise, top the gas off with regular gasoline as the tank begins to empty out.What happens if you put E85 gas in a 87 car?
Putting E85 in a Gas CarThe check engine light will most likely illuminate, but you can top off the rest of your tank with regular gasoline and ride it out. A one-time mix-up with E85 gas shouldn't cause any long-term damage.