Via Frugal Travel Guy, Avis is offering bonus Delta miles at airport locations through December 31, as follows:

• Rent for 3 days and receive 2,500 bonus SkyMiles. Use coupon number MUAA132.
• Rent for 4 days or more and receive 5,000 bonus SkyMiles. Use coupon number MUAA133.

It appears that these coupon codes will generate the promised bonus miles, and that they are compatible with whatever standard discount (“AWD”) codes one normally uses, though I can imagine that some discounts you’d find online could in practice void the bonus is those codes normally exclude mileage earning.

That’s important, because the offer does also include a ‘discount code’ that promises 25% off rates, though in my experience these codes don’t usually deliver as promised, and sometimes yield rates that are more expensive that what I normally find using my own standard discount code from my company. So as always, shop rates, and forunately you should still be able to earn the bonus when you do.

Sadly this offer doesn’t include one-day rentals, those are where the real mileage values kick in that can make renting a car for no other reason worthwhile. These just happen to be valuable if you’re renting a car anyway, 2500 Delta miles for a 3-day rental is enough to make me give up my standard Avis crediting to Virgin which provides 1000 miles flat regardless of rental length.