New 2023 Sinnna Fuel Economy for first 500miles?

RMP said:

We got the New Sienna 2023 15 days back - now the odometer is 350 miles but still i see the fuel economy of 28.7mpg what is the issue ?

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If you clocked 350 miles in 15 days, it suggests you may have made a lot of short trips (as a comparison, in 15 days I do 1,600 miles). In the first few minutes of every trip the fuel economy is very low as the engine hasn't reached its optimal temperature.

RMP said:

That makes sense lets see i will look in longer trip

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If you are in the North, you should expect to see lower MPG's in colder weather. If you visit Fuelly, you can look up MPG reports, logged by Sienna drivers. Unfortunately, none of the MY2023 owners has signed up yet, but I don't think it's going to be very different from MY2021 and 2022.

Good luck!

Toyota Sienna MPG - Actual MPG from 2,954 Toyota Sienna owners (fuelly.com)