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Discussion Starter #1
Today I was able to hit 30.3 MPG on a 23.5 mile trip. I was impressed, as I normally only average about 24 or so. 2017 XLE AWD.

IMG_20200111_200548.jpg
 

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Discussion Starter #3
This instance of 30.3MPG was done during a drizzle of rain, in the evening hours, so not much highway traffic.
 

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If I drove my van off a high cliff, I could probably meet and maybe exceed your accomplishment! ;-)
 

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Discussion Starter #7
I haven't read that part of the manual. What's the interval from a non direct injection engine?
 

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On our 2015 Sienna we would get anywhere from 22mpg to 29 on trips. When I changed the OE Firestones out for Michelin our average is 21.5 mpg :(
 

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These direct injection engines do save fuel, but payback is the 60k spark plug changes!
Thank Toyota for putting in the Highlander 296 hp (port-injected and direct-injected) built in engine from 2017 on. The valves do get cleaned, unlike a just direct- injected ones.
 

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2015 Sienna SE, was getting 16 in town and 24+ on the CA Freeway. I went to All American Tires for 4 new tires and the Manager recommended 41-42 PSI in the tires.
Went to 18+ in town and could hit 29 on the freeway @ 68 MPH.
Now, who are we to kid.
If you don't get what you say you get, WHO are you fooling?
Ride is a little harsher, but we are "not wearing out" the outer edges of the tires as we were @ 36 PSI.
When I returned to Toyota for some service, they lowered the Tire Pressure to 36 & mileage went down.
Back up to 42 TP.
 

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Discussion Starter #13
I think I'm going to try 42 PSI. I heard some folks put 42 in the front and 40 in the back, since the front is heavier.
 
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