MUAA074 expired in 08.

I've been using MUAA133 for 5K bonus SkyMiles and AWD D005297 (convention/corp rate requiring no id) for great savings and 5,500 SMs with each rental. Minimum is 4 days for rental. Any AWD will work. Avis promotes using K817600 for a 25% discount but I have never had that AWD beat D005297.

You can find more on MUAA133 and MUAA132 (3 days) here.

# 2500 bonus miles valid on a qualifying rental of three consecutive days at participating Avis airport locations in the U.S. and Canada. Please mention coupon number MUAA132 to receive bonus miles offer.
# 5000 bonus miles valid on a qualifying rental of four consecutive days or more at participating Avis airport locations in the US and Canada. Please mention coupon number MUAA133 to receive bonus miles offer.
# Bonus miles offer valid on all car groups.
# An advance 24-hour reservation is required.
# Offer may not be used with any other coupon, promotion or offer except your AWD discount.
# The savings of up to 25% applies to the time and mileage charges only.
# Taxes, concession recovery fees, vehicle license recovery fee, customer facility charges ($10/contract in CA) and fuel charges are extra.
# Optional items such as LDW ($35.99/day or less except in Louisiana $49.99/day) and other surcharges may apply and are extra.
# Offer may not be used in conjunction with any other promotion or offer.
# Offer is subject to vehicle availability at the time of rental and may not be available on some rates at some times, including some online rates at Avis.com.
# Car rental return restrictions may apply.
# Offer subject to change without notice.
# Holiday and other blackout periods may apply.
# Renter must meet Avis age, driver and credit requirements. Minimum rental age may vary by location. An additional daily surcharge may apply for renters under 25 years old.
# Frequent flyer surcharge of up to $0.50 USD per day, may apply.
# Rental must begin by December 31, 2009