2026 Lexus IS luxury sport sedan — based on official estimates and carry‑over EPA data: 

🚗 2026 Lexus IS – EPA Fuel Economy (City / Highway / Combined)

🟦 Lexus IS 350 (V6, AWD or RWD)

• City: 20 MPG (approx)

• Highway: 28 MPG (approx)

• Combined: 23 MPG (EPA estimate)

These figures come from the EPA ratings carried into 2026 for the IS350’s 3.5 L V6. The combined rating of about 23 MPG (city ~20 / highway ~28) is typical for this sport‑oriented sedan with a naturally aspirated V‑6. 

📌 Notes:

• The 2026 IS lineup focuses on the IS350 V‑6 — Lexus dropped the smaller 4‑cyl IS300 and the previous IS500 V‑8 for this refresh in the U.S. market. 

• Real‑world fuel economy can vary with driving style, trim (RWD vs AWD), and conditions, but the EPA numbers are a reliable baseline. 

If you want, I can break this down into RWD vs AWD specific MPG estimates as well!