Diet Pepsi Price at Taco Bell (2026) — Illinois

A Diet Pepsi costs $3.40 at Taco Bell in Illinois, United States (price last updated November 2026).

Taco Bell's Diet Pepsi® is priced at $3.40 in the United States right now (November 2026). That's about 3% below the typical Taco Bell drink item — the 15th-cheapest of 38 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.

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