RENTAL CAR COUPON ADVICE: get a baseline quote from the merchant's web site before you check the reservation with a coupon code. There are times when the rental car company is running an online special, and the (sale) rate that is quoted without the coupon may be better because coupons are typically applied only to base rates (not sale or promotional rates). If you experience the coupon code giving you a higher quoted rate, this is probably the case - just go with the lowest quoted rate. Listed below are online coupon codes and promotional offers for rental cars.

Avis Coupon Codes and Discount Promotions Avis Rent A Car operates the world's second largest general-use car rental business.

Save up to 10% on Compact through Full-Size rentals! view full details

Special Avis Rates for AARP Members! view full details

Free Upgrade when you book online view full details

15% off Weekly Rentals! view full details

10% off Weekend Rentals! view full details

$50 off Monthly Rentals! view full details

Up to 25% off, plus a Free day when you use your Discover card! (exp December 31, 2009 11:59 PM ET) view full details

Up to $20 off Weekend rentals! (exp December 31, 2009 11:59 PM ET) view full details

Enjoy one day Free on a weekly rental with Avis when you pay with your Visa card! (exp February 28, 2010 11:59 PM ET) view full details

Use your Mastercard and get up to 20% off, plus a Free Single Upgrade! (exp June 30, 2010 11:59 PM ET) view full details

View all Avis Coupons and Promotional Offers, including Hot Products

Budget Car Rental Coupon Codes and Discount Promotions Budget Rent A Car continues to appeal to value-minded renters by offering quality vehicles and a rewarding rental experience at nearly 1,900 rental locations worldwide.

Up to 10% off leisure weekly and weekend rates! view full details

Up to $15 off Intermediate through Full-Size Weekly Rentals! view full details

5% off daily rental rates from Budget! view full details

10% off daily rental rates from Budget! (exp December 31, 2009 11:59 PM ET) view full details

$25 off a weekly rental! (exp December 31, 2009 11:59 PM ET) view full details

Up to 25% off, plus a Free day when you use your Discover card! (exp December 31, 2009 11:59 PM ET) view full details

Free Upgrade when you pay with your Visa card! (exp February 28, 2010 11:59 PM ET) view full details

Use your Mastercard and get up to 20% off, plus a Third Weekend Day Free! (exp June 30, 2010 11:59 PM ET) view full details

Use your American Express card and get 20% off rentals with pickup Sunday - Thursday (exp December 31, 2009 11:59 PM ET) view full details

View all Budget Car Rental Coupons and Promotional Offers, including Hot Products

Dollar Rent A Car Coupon Codes and Discount Promotions Dollar Rent A Car offers a large selection of fine quality DaimlerChrysler rental vehicles in addition to other exceptional rental cars. In the United States, Dollar offers the Chrysler Concorde and the Sebring convertible; the Dodge Neon, Stratus, Intrepid and Caravan minivans and the Jeep Grand Cherokee.

10% off with American Express! (exp January 31, 2010 11:59 PM ET) view full details

5% off your rental! (exp December 31, 2009 11:59 PM ET) view full details

7% off at participating locations! (exp December 15, 2009 11:59 PM ET) view full details

View all Dollar Rent A Car Coupons and Promotional Offers, including Hot Products

Enterprise Rent-a-Car Coupon Codes and Discount Promotions Enterprise offers car rentals from economy to luxury, minivan to cargo van, and pickup trucks, with locations throughout the U.S., Canada, and the U.K.

Sign up for Email Extras to receive rental car discounts, car rental coupons and other special Enterprise offers! view full details

50% off 3-Day (Fri-Mon) weekend rentals at Enterprise.com! (exp May 21, 2010 11:59 PM ET) view full details

Special Rates for AARP members! view full details

View all Enterprise Rent-a-Car Coupons and Promotional Offers, including Hot Products

Expedia Coupon Codes and Discount Promotions Expedia.com is your one-stop source for flights, hotels, vacation packages, cruises, and rental cars.

Last Minute Car Deals from Expedia.com view full details

Expedia Best Price Guarantee: get the lowest price, or they will give you a $50 coupon! view full details

View all Expedia Coupons and Promotional Offers, including Hot Products

Fox Rent A Car Coupon Codes and Discount Promotions Fox Rent a Car is a discount car rental company with locations at airports around the world.

Click for Current Fox Rental Car Coupons view full details

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Orbitz Coupon Codes and Discount Promotions Orbitz provides savings on Hotels, Airline Tickets, Travel Packages, Vacations, Cruises and Car Rentals.

Last Minute Driving Deals from Hertz, National, Advantage and more! view full details

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Priceline Coupon Codes and Discount Promotions Priceline.com delivers huge savings on airline tickets, hotel rooms, rental cars and vacations.

Save up to $20 on Weekend Rentals from National Car Rental! (exp November 11, 2009 11:59 PM ET) view full details

Priceline.com Rental Car Discounts view full details

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Thrifty Coupon Codes and Discount Promotions Thrifty offers cars in airport and local car rental markets.

5% off your rental! view full details

5% off for Seniors 55+! view full details

7% off your rental! (exp December 31, 2009 11:59 PM ET) view full details

10% off when you pay with your American Express Card! (exp January 31, 2010 11:59 PM ET) view full details

$15 off a Minivan, Premium Car, Luxury Car, Convertible, Mid-size SUV or Standard SUV rental! (exp December 15, 2009 11:59 PM ET) view full details

View all Thrifty Coupons and Promotional Offers, including Hot Products

Travelocity Coupon Codes and Discount Promotions Travelocity has great offers on air, hotel, car rentals and more.

Car / Rail Deals from Travelocity view full details

Travelocity allows you to track fares to your favorite destinations! view full details

View all Travelocity Coupons and Promotional Offers, including Hot Products