Mozzarella Sticks (Medium) vs Onion Rings (Medium): Sonic Nutrition Compared
Quick answer: Mozzarella Sticks (Medium) has 20 fewer calories than Onion Rings (Medium) (560 vs 580). Protein is 14 g higher in Mozzarella Sticks (Medium) (22 g vs 8 g). Sodium is 620 mg lower in Onion Rings (Medium) (570 mg vs 1190 mg). Sugar is 16 g lower in Mozzarella Sticks (Medium) (3 g vs 19 g).
Mozzarella Sticks (Medium) vs Onion Rings (Medium)
One serving each, as Sonic prints it.
The short answer
Mozzarella Sticks (Medium) has 20 fewer calories than Onion Rings (Medium) (560 vs 580). Protein is 14 g higher in Mozzarella Sticks (Medium) (22 g vs 8 g). Sodium is 620 mg lower in Onion Rings (Medium) (570 mg vs 1190 mg). Sugar is 16 g lower in Mozzarella Sticks (Medium) (3 g vs 19 g).
| Nutrient | Mozzarella Sticks (Medium) | Onion Rings (Medium) |
|---|---|---|
| Calories | 560 | 580higher |
| Total fat | 28 g36% DV | 29 ghigher37% DV |
| Saturated fat | 11 ghigher55% DV | 5 g25% DV |
| Trans fat | 0.5 ghigher | 0 g |
| Cholesterol | 45 mghigher15% DV | 0 mg0% DV |
| Sodium | 1190 mghigher52% DV | 570 mg25% DV |
| Carbohydrates | 54 g20% DV | 74 ghigher27% DV |
| Fiber | 3 g11% DV | 4 ghigher14% DV |
| Sugars | 3 g | 19 ghigher |
| Protein | 22 ghigher | 8 g |
| Protein per 100 calories | 3.9 g | 1.4 g |
| Share of a 2,000-calorie day | 28% | 29% |
“Higher” marks the larger number only; it is not a judgement. % DV is the FDA Daily Value for a 2,000-calorie diet, shown for nutrients that have one.
Allergens in Sonic's guide
Only in Mozzarella Sticks (Medium)
NoneOnly in Onion Rings (Medium)
NoneIn both
- Milk
- Wheat
- Gluten
This lists what Sonic marks as contained. Cross-contact can happen in the kitchen, so use the allergen menu if you avoid an allergen.
Mozzarella Sticks (Medium) vs Onion Rings (Medium): Questions
Answers use only the numbers in Sonic's guides.
Which has more calories, Mozzarella Sticks (Medium) or Onion Rings (Medium)?
Onion Rings (Medium) has more calories: 580 against 560 for Mozzarella Sticks (Medium). Figures are from Sonic's nutrition guides.
Which has more protein, Mozzarella Sticks (Medium) or Onion Rings (Medium)?
Mozzarella Sticks (Medium) has more protein: 22 g against 8 g for Onion Rings (Medium).
Which has more sodium, Mozzarella Sticks (Medium) or Onion Rings (Medium)?
Mozzarella Sticks (Medium) has more sodium: 1190 mg against 570 mg for Onion Rings (Medium).
Which has more sugar, Mozzarella Sticks (Medium) or Onion Rings (Medium)?
Onion Rings (Medium) has more sugar: 19 g against 3 g for Mozzarella Sticks (Medium).
Do Mozzarella Sticks (Medium) and Onion Rings (Medium) contain the same allergens?
Sonic's allergen guide marks the same allergens for both: Milk, Wheat, Gluten. Cross-contact can still happen, so check with your drive-in if you avoid an allergen.
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Where the Numbers Come From
We are an independent guide, not Sonic or Inspire Brands.
Sources
- Sonic's Fall 2026 nutrition guide: every value for regular menu items.
- Sonic's Fall 2026 allergen guide: the allergens marked for each item.
- Sonic's November 2026 brochure: limited-time items, flagged on the page.
What it does not do
- It adds, multiplies and compares Sonic's numbers. It does not estimate anything.
- It leaves out items that are not in the Fall 2026 guide, and drink add-ins and burger add-ons.
- It does not compare prices, because Sonic publishes none.
- It does not call any item healthier. “Higher” only marks the larger number.
Sonic publishes no menu prices. Prices on Sonic Menu are not Sonic's: where we could, we show a typical pickup price measured by Drive Thru Index across a sample of Sonic restaurant pages (checked November 6, 2026); for a few items we could not measure, a rough estimate of our own. They are not live prices from any single restaurant. Exact menu prices, combo meal promotions, and product availability vary by independent franchise location, drive-in stall vs. drive-thru, and delivery service app markups (DoorDash, Uber Eats, Grubhub).