One of the easiest ways for road warriors to earn extra airline miles is through car rentals. Often you only need to add an extra code to your existing or new reservation to earn thousands of miles.

For example, Avis has a promotion going on right now where you can earn up to 3,000 American Airlines miles with Avis car rentals.

Book Car Rental To Earn 3,000 AA Miles

• Book your qualifying Avis car rental by clicking here
• Use coupon code MUAA077

Bonus Miles With Car Rental Details

Members earn miles based on the number of days booked for their car rental. The table below shows how many miles you can earn based on the number of days for your rental. The maximum number of bonus miles is 3,000 for a 5 day rental. A 2 day rental earns 750 miles while a 3 day rental earns 1,500 miles. 

Terms And Conditions

• 750 AAdvantage bonus miles offer valid on a qualifying rental of minimum two day, maximum two consecutive days at participating Avis airport locations in the U.S., Canada, Europe, Middle East, Africa, Asia, Latin America, and Caribbean. Mention coupon MUAA077 to get this offer.
• 1,500 AAdvantage bonus miles offer valid on a qualifying rental of minimum three day, maximum four consecutive days at participating Avis airport locations in the U.S., Canada, Europe, Middle East, Africa, Asia, Latin America, and Caribbean. Mention coupon MUAA077 to get this offer.
• 3,000 AAdvantage bonus miles offer valid on a qualifying rental of five consecutive days or more at participating Avis airport locations in the U.S., Canada, Europe, Middle East, Africa, Asia, Latin America, and Caribbean. Mention coupon MUAA077 to get this offer.
• Offer valid for rentals through December 31, 2014.

Bottom Line

Earning extra miles through car rentals can be as easy as adding a coupon code to your reservation. This Avis / American Airlines promotion is available until December 31, 2014, so if you have a rental this fall, consider the promotion for a way to earn even more American Airlines miles.