Midas is primarily a mechanic shop that specializes in brake replacement and repair. In order to fill in the gaps between cheap brake repair, they do a lot of oil changes. They often provide some Midas oil change coupons to get customers in the door so they can also look at your brakes and see if they need work.
Midas almost never has a nationally run coupon, at least not since this site has been up and running. In order to find your local deal, you have to go to the Midas home page and click coupons, then enter your zip code to find the closest Midas location to your home.
They do provide lots of different Midas coupons for different services. In just one location (Tucson) I found coupons for oil changes, brake pads or shoes, brake system evaluation, 4 wheel alignment, free tire inspection, batteries, belts & hoses, wiper blades, engine light check, muffler, fluid exchange, and stocks & struts.
Here are a few Midas coupons in various cities of the country: