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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 San Marcos, CA. 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 1215 Grand Avenue for the ultimate SONIC experience!
Old-school fast-food chain offering drive-in service & made-to-order burgers, sides & shakes.
Hours
| Friday | 10 AM–1 AM |
| Saturday | 9 AM–1 AM |
| Sunday | 9 AM–12 AM |
| Monday | 10 AM–12 AM |
| Tuesday | 10 AM–12 AM |
| Wednesday | 10 AM–12 AM |
| Thursday | 10 AM–12 AM |
Menu Photos
Order and Reservations
Order: Order online
Related Web Results
Sonic Locations in San-marcos, California
Sign In. locations/all locations/California/. San marcos. 1215 Grand Avenue. San Marcos, CA. Open until 12:00 AM. Drive-thru, Delivery, Online Ordering. Order …
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Sonic Drive-In, 1215 Grand Ave, San Marcos, CA 92078, US
Get more information for Sonic Drive-In in San Marcos, CA. See reviews, map, get the address, and find directions.
Reviews
Michael Lickver
You can do the drive through or pull up to a ordering space. The food is delicious. One of the best fast food chains, but albeit on the pricier side for fast food, but you get quality. Their burgers are loaded with quality meat, fresh vegetables, and tasty ingredients. Their tater tots are crispy on the outside and soft and warm on the inside. Their shakes and Sonic Blasts are delicious. This is my new favorite fast food.
… moreHeather Nugent
Horrible BLT Sandwich. 1 tomato, 2 pieces of bacon, limp lettuce and 6 tater tots. Im not expecting a 5 star meal but come on this is disgusting and not worth $13. SONIC…DO BETTER!! YUCK!!
… moreTylor Harkins
Came to get a shake at 9:55 pm and it took 25 mins for me to receive it through the drive thru. There was only one car ahead of me that order two drinks. It should not take almost 30 mins to receive one shake . And they brought me the wrong order when they finally approached me. The car behind me got there 2 drinks and hot dog before me.
… moremohsen safabakhsh
Got my kids out of school and plan was to go to Costco business center next door so we decided to go against our healthy choices and eat at Sonics. Placed our order and waited about 10 minutes and no problem. Once the order came right off the bat the fries looked very old and dry, when I took a few and ate them they were perhaps sitting under the neon lights for a long long time. Next I opened our cheese burgers, Sonics#1 from the menu board, which includes onion, lettuce, tomato, pickles etc. however, no tomato, and no lettuce, look at the pictures. The burger looked really sad and depressing. Called in and Melissa came in. She was very nice and apologetic, and rushed to make it right. Waited another 5 minutes and she came back and gave us our burgers with the missing vegetables, however, they were the same burgers and no signs of tomatoes, or lettuce. Called and the manager came in and got my money back and went on our day. Won’t ever try and make this mistake again. Sonics you lost a new customer for good.
… moreKodi Santiago
Mexican kid with the tree line tattoo on his left forearm, and ear ring and nose piercing. Homeboy had this zesty agressive energy towards me you aint scaring anybody with them little shiny jewelry and the tattoo that every white girl gets once they graduate highschool. Worst service and rude
… moreJames Benet
Nice location, service was very good, clean and professional. Onion rings were good and burgers better than Burger King and most of what McDonald’s offer. Hotdogs were a bit too spicy and or condiment rich with sausage being small. In the days of costco offering a better hotdog for less than $2 we were expecting more. Grade A location, you are doing it right!
… moreDivisionary
It was great food that they served us. They should work on their customer service a little bit. Overall though, it was a good experience.
… moreSarai Cruz
Zero stars an hour and and a half before closing they weren’t answering drive through or parking station no greeting or be there shortly after waiting for 30 minutes and we can see them inside on February 6th-7th 2026 night shift.
… moreMaddie Vikki
I recently visited Sonic and had a very disappointing experience. I waited for about 10 minutes in the self-order spot without any response, even after pressing the button several times. After that, I decided to go through the drive-thru, where I waited another 10 minutes, and despite there being no line, the people behind us were served first.
When we finally received our milkshakes, they were warm, which was incredibly surprising. I honestly can’t understand how that happens. Thankfully, the person who assisted with the refund was friendly and helpful, making the process easy. I ended up going to Dairy Queen instead, which was a much better choice. Unfortunately, I can’t recommend this Sonic location based on my experience. Maybe they were having a bad day, this was my first bad experience there unfortunately.
… moreWhen we finally received our milkshakes, they were warm, which was incredibly surprising. I honestly can’t understand how that happens. Thankfully, the person who assisted with the refund was friendly and helpful, making the process easy. I ended up going to Dairy Queen instead, which was a much better choice. Unfortunately, I can’t recommend this Sonic location based on my experience. Maybe they were having a bad day, this was my first bad experience there unfortunately.
Pete Shipman
Arrived at the kiosk (dine in car) pressed red button for service person replied be right with you then watch 4 cars pull up to drive thru order get their meal and leave during this time I pressed button 2 more times with 0 response myself and the guy next to me left due to lack of service
… more