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For more than 60 years, SONIC, America’s Drive-In has built the ultimate dining experience with our drive-in restaurants and we proudly serve our guests in Mercedes, TX. We did it by sticking to what made drive-ins so popular in the first place: made-to-order American classics, signature menu items, and speedy service from friendly Carhops full of fun and personality. Cruise on over to us at 620 East 2nd Street for the ultimate SONIC experience!
I missed Whataburger breakfast so I decided to drive to the Mercedes location from La Feria. Y’all let me down. I ordered a breakfast burrito that was supposed to come with the cheese sauce onion tomato jalapeño. I ordered extra cheese sauce on the side and I didn’t get that. I didn’t even get it in the burrito. I told the kid that I wanted my meal to be large, but they only gave me a medium tater tot and a large drink. They took about 20 minutes to get my order out. Then when I did get the cheese sauce, they gave me a very small amount lol. I know it sounds stupid, but I want to enjoy my meal. If I’m spending 30 bucks, I would like to get what I asked for. The burger and the fries that I ordered for my son were good. My other The burger and the fries that I ordered for my son were good. My other son wanted a sonic blast and the Oreos were super stale. He’s only five years old and he eats everything, but he even he noticed that it tasted funny. Sucks that I had to drive all the way out there and not really get what I wanted. Sad times.
AP
Alexandra Prado
Sep 9, 2026
5.0
I had never tried their burgers but decided to give it a shot since I LOVE smash burgers and this is definitely going to be a go-to spot for my burger cravings! The service was excellent as well, the young man who brought out my food was very kind and helpful!
SN: download the app because there are SO MANY coupons and deals to take advantage of and you can also order through the app while you’re there! Super cool!
FF
FC
Aug 17, 2026
5.0
Very nice staff and quick service
LL
lydia lopez
Jul 1, 2026
5.0
I call my order in and by the time I arrive my meal is done and ready for me to head out to work. Saves times and not delayed. Food is well served and delicious
SR
Steve Ruiz
Jun 3, 2026
1.0
I wouldn't know on the food I was waiting 30 min for ice cream and it was dead .id understand if it was busy but dead and waiting 30 min and still I just left.. poor service ..fast food is fast food. But ice cream..come on
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