How does additional passenger weight affect fuel efficiency in the Toyota Prius?

Home > Gari Forums > Toyota Forums > Toyota Prius Forums > Toyota Prius Dimensions and Weights Forums

How does additional passenger weight affect fuel efficiency in the Toyota Prius?

The Prius is designed for efficiency, but extra weight from passengers and cargo can reduce fuel economy. Discussing real-world impacts and best practices for maintaining fuel efficiency when fully loaded can be useful.

Qalb E Momin asked on 12 Feb 2025 16:19:55 pm

1 Answer

29 views |

Car Mechanic Expert - on 12 Feb 2025 16:25:27 pm

More passengers and cargo increase overall weight, leading to higher fuel consumption.
Fully loaded, the Prius may lose 2-4 MPG compared to driving with just the driver.
To maintain efficiency, owners should:

Reduce unnecessary weight empty trunk when not needed.
Keep tire pressure optimized for better rolling resistance.