Elma S., Mexico, N.Y.

Yes. In areas that are required to sell oxygenated gas, there will be ethanol regardless of the octane rating. That includes most major cities year-round and some states that have high levels of carbon monoxide during the winter.

Federal regulations allow a gas blend that includes up to 10 percent ethanol (E10), though some areas restrict it to lower amounts. Don’t know what the rule is up in Mexico (N.Y.), but the amount that can be used locally is supposed to be posted on each gas pump.

Nozzle

Parts of the country with good air quality — mainly rural and other sparsely populated areas — may not be required to have ethanol in the gasoline, but local refiners may not produce pure gas just for those areas, so you may not have much choice about using ethanol.

All vehicles sold in the U.S. are equipped and guaranteed to safely run on gasoline blended with up to 10 percent ethanol. If you’re concerned about the effects of ethanol on your car, you can find ethanol-free pumps at www.pure-gas.org.

Learn more

Answered by Rick Popely on July 19, 2010 | Permalink

Search Results

Ask.cars.com Search Results for

Search

See if your question has already been asked and answered

Thank You!

Your question has been successfully submitted to Ask.cars.com. It will now be reviewed by our editors and we'll answer it soon if we think it's a useful question. You will be notified via e-mail when the answer is posted. Ask.cars.com tackles your questions about new cars and the car-buying process. Unfortunately we can't answer questions regarding:

  • Used cars.
  • Most aftermarket products.
  • Mechanical issues. You can visit our friends at Car Talk to discuss your mechanical problems.
Thanks for your interest.

Ask

Have our experts answer any of your questions about new cars.

Email us at tips@cars.com

Maintenance Advice
Get answers from the
Car Talk Community