What is the hottest Taco Bell sauce?
Diablo is the hottest by Taco Bell’s own order of mild, hot, fire and diablo; the brand publishes no Scoville figure, and every packet record carries zero calories and a certified vegan tag.
TB Menus review deskReviewed 19 September 2026Prices read 19 September 2026 at 452 restaurantsHow every figure gets here
The ladder, in the brand’s own order
Taco Bell sells its sauce packets in a named order, mild, hot, fire and diablo, and the names are the whole of what it publishes about heat: no Scoville figure appears on the nutrition menu, the ordering menu or the help center pages read. The packets on the menus read: Mild Sauce Packet, Hot Sauce Packet, Fire Sauce Packet and Diablo Sauce Packet.
Every packet carries a record of its own with zero calories and a sodium figure, and the ingredient statements tag each certified vegan. The packets are priced on the ordering menus as add-ons, mostly at no charge; the range read for each is on its page.
What the statements say
Mild Sauce Packet: “Tomato puree (tomato paste, water), vinegar, food starch or xanthan gum, salt, chili spices, sugar, natural flavors, potassium sorbate and sodium benzoate (P), …”, Hot Sauce Packet: “Tomato puree (water, tomato paste), jalapeno, vinegar, food starch, salt, chili spices, minced onion, sugar, natural flavors, maltodextrin, potassium sorbate an…”, Fire Sauce Packet: “Tomato puree (tomato paste, water), jalapeno peppers, vinegar, modified food starch, chili powder, minced onion, onion juice, spices, natural flavors (contains …” and Diablo Sauce Packet: “Tomato puree (water, tomato paste), seasoning (modified tapioca starch, salt, spices, sugar, maltodextrin, garlic powder, onion powder, natural flavors, xanthan…” The record names the packets Border Sauce; the ordering menu names them by heat.
The sauces that are not packets
The creamy sauces sold as add-ons (Avocado Verde Salsa Sauce Packet, Reduced-Fat Sour Cream, Creamy Jalapeño Sauce, Nacho Cheese Sauce and Red Sauce) carry no heat name from the brand; the sauces hub lists every sauce with its price.
Questions
What is the hottest Taco Bell sauce?
Diablo, by the brand’s own order of mild, hot, fire and diablo; no Scoville figure is published, and the Diablo guide says what is.
How hot is Fire sauce?
Third of four on the brand’s ladder; the brand publishes no heat figure.
Are the sauce packets free?
The ordering menus read price them as add-ons, mostly at no charge; each packet’s page has its range.
Do the packets have calories?
Zero on every packet record; sodium runs 30 mg for Mild Sauce Packet, 45 mg for Hot Sauce Packet, 55 mg for Fire Sauce Packet and 35 mg for Diablo Sauce Packet.
Are the sauces vegan?
The ingredient statements tag each packet certified vegan.
Can I buy the sauce in a bottle?
The pages read are the restaurant menus, which sell packets; a bottled sauce is not on them.