2026 Kia Carnival MPV (minivan) in the U.S. — including both the standard gasoline and hybrid versions:

🚗 2026 Kia Carnival – Gas (3.5 L V-6)

• City: ~18 mpg

• Highway: ~26 mpg

• Combined: ~21 mpg
  These figures are essentially carried over from the prior model and are the best available estimates for the 2026 gas-powered Carnival. 

⚡ 2026 Kia Carnival Hybrid

• City: ~34 mpg

• Highway: ~31 mpg

• Combined: ~32–33 mpg
  The hybrid version uses a 1.6 L turbo engine paired with an electric motor and delivers significantly better fuel economy. 

📊 Summary Table

💡 What This Means

• The gasoline-powered Carnival delivers fuel economy typical of a large family minivan: good for long freeway trips but naturally lower around town. 

• The hybrid version significantly improves both city and highway efficiency due to the electric assist, making it a stronger choice if fuel economy is a priority. 

If you want, I can compare these mpg figures with competitors like the Toyota Sienna or Honda Odyssey so you can see how the Carnival stacks up.