Diet Pepsi Price at Taco Bell (2026)
A Diet Pepsi costs $3.4 at Taco Bell in United States (updated October 2026).
Taco Bell's Diet Pepsi® is priced at $3.40 in the United States right now (October 2026). That's about 2% below the typical Taco Bell drink item — the 16th-cheapest of 37 we track. It's available at around 50 Taco Bell locations across the United States. Prices are sourced from delivery platforms and refreshed regularly. Check the full Taco Bell menu or compare drink prices on MenuPriceToday.
How this compares in Drinks
37 items tracked| This item | $3.40 |
| Drinks median | $3.47 |
| Cheapest — Aquafina® Bottled Water | $2.43 |
| Most expensive — Tropical Punch Rockstar® Energy Refresca - Medium | $5.97 |
| vs Drinks median | −2% |
Compare Taco Bell prices across 20+ countries — Fast-Food Price Index →