Business Details
About
Fast Food RestaurantRestaurantAmerican RestaurantChicken RestaurantIce Cream ShopHot Dog RestaurantBreakfast RestaurantBurger JointRestaurant Delivery Service
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 Thornton, CO. 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 3605 East 104th Avenue for the ultimate SONIC experience!
Location
Hours
Reviews
3.1
1,260 reviews
5 stars
375
4 stars
227
3 stars
188
2 stars
126
1 star
344
What are people saying?
AI-generated from recent customer reviews
Customer Service
Numerous reviews highlighted rude and unprofessional staff, with many customers expressing frustration over poor service and incorrect orders.
Order Accuracy
A significant number of customers reported receiving incorrect orders, with complaints about missing items and wrong food being common.
Food Quality
Several reviews mentioned dissatisfaction with the food quality, including stale or poorly prepared items, leading to disappointment among customers.
Management Issues
Customers noted a lack of effective management, with complaints about staff behavior and inadequate responses to service issues.
Wait Times
Many customers experienced long wait times for their orders, both at the drive-thru and for mobile orders, contributing to overall dissatisfaction.
- ESEric S2 days ago2.0Holy crap, they must be on hard times at this Sonic! They just charged me .20¢ for 1 ketchup and 1 mayo packet! They gave 2 packets of salsa that I did not ask for for free and then upcharge the ketchup for crying out loud! I know it's not a lot of money but, it is the principle of the thing... I have never paid for ketchup at a fast food restaurant in nearly half a decade on this planet... Didn't pay for ketchup across town either. Also, 3 people in the car and 1 peppermint, screw you!
- CLConstance LowryDec 23, 20251.0Was at the window with headset on not taking orders just playing on phone. Shit service. Should close this location down.
- CSChristian SzogDec 23, 20251.0Never was acknowledged waited for 15 minutes
- JRJolyn ReneeOct 2, 20251.0Hi I really hope a manager reads this. Please check who you have on staff this evening October 2, 2025. There was a young girl at the drive through window with brown hair and heavy eye makeup with the worst attitude. She got my order wrong and decided to be rude the entire time from ordering to receiving the order. It was so bad I decided to leave a review rather than go back and risk having her spit in my drink. She really should be written up or find a different place to work if shes going to insist on being that way. Because now im leaving a review for the way she represented this establishment.
- AAAlisha ArcherSep 23, 20251.0Employees are rude! Took forever to get the food.