Hot Fudge Sundae vs Vanilla Soft Serve Cup: Sonic Nutrition Compared
Quick answer: Vanilla Soft Serve Cup has 160 fewer calories than Hot Fudge Sundae (300 vs 460). Sodium is 60 mg lower in Vanilla Soft Serve Cup (300 mg vs 360 mg). Sugar is 20 g lower in Vanilla Soft Serve Cup (40 g vs 60 g).
Hot Fudge Sundae vs Vanilla Soft Serve Cup
One serving each, as Sonic prints it.
The short answer
Vanilla Soft Serve Cup has 160 fewer calories than Hot Fudge Sundae (300 vs 460). Sodium is 60 mg lower in Vanilla Soft Serve Cup (300 mg vs 360 mg). Sugar is 20 g lower in Vanilla Soft Serve Cup (40 g vs 60 g).
| Nutrient | Hot Fudge Sundae | Vanilla Soft Serve Cup |
|---|---|---|
| Calories | 460higher | 300 |
| Total fat | 17 ghigher22% DV | 10 g13% DV |
| Saturated fat | 13 ghigher65% DV | 7 g35% DV |
| Trans fat | 0 g | 0 g |
| Cholesterol | 50 mg17% DV | 50 mg17% DV |
| Sodium | 360 mghigher16% DV | 300 mg13% DV |
| Carbohydrates | 73 ghigher27% DV | 47 g17% DV |
| Fiber | 1 ghigher4% DV | 0 g0% DV |
| Sugars | 60 ghigher | 40 g |
| Protein | 8 ghigher | 7 g |
| Protein per 100 calories | 1.7 g | 2.3 g |
| Share of a 2,000-calorie day | 23% | 15% |
“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
Sonic's allergen guide does not list Hot Fudge Sundae as a single item (it lists parts only, or the item is not in it), so we cannot compare allergens here. Check the allergen menu.
This lists what Sonic marks as contained. Cross-contact can happen in the kitchen, so use the allergen menu if you avoid an allergen.
Hot Fudge Sundae vs Vanilla Soft Serve Cup: Questions
Answers use only the numbers in Sonic's guides.
Which has more calories, Hot Fudge Sundae or Vanilla Soft Serve Cup?
Hot Fudge Sundae has more calories: 460 against 300 for Vanilla Soft Serve Cup. Figures are from Sonic's nutrition guides.
Which has more protein, Hot Fudge Sundae or Vanilla Soft Serve Cup?
Hot Fudge Sundae has more protein: 8 g against 7 g for Vanilla Soft Serve Cup.
Which has more sodium, Hot Fudge Sundae or Vanilla Soft Serve Cup?
Hot Fudge Sundae has more sodium: 360 mg against 300 mg for Vanilla Soft Serve Cup.
Which has more sugar, Hot Fudge Sundae or Vanilla Soft Serve Cup?
Hot Fudge Sundae has more sugar: 60 g against 40 g for Vanilla Soft Serve Cup.
Do Hot Fudge Sundae and Vanilla Soft Serve Cup contain the same allergens?
Sonic's allergen guide does not list Hot Fudge Sundae as a single item (it lists parts only, or the item is not in it), so we cannot compare allergens here. Check the allergen menu.
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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).