No I dont have Sync 3 - my truck is an XLT, not a Lariat or Platinum - I specifically DID NOT want a moon roof and all the Platinums and Lariats on the lot seemed to have Moon Roofs or some sort of roof opening and I wanted a metal solid roof - cheaper, stronger, and quieter, or at least that's what I thought. Mostly cheaper and less likely to have breakage issues.
I have had very little success with voice commands in a moving vehicle - so I didn't get that upgrade either. My iPhone connects seemlessly with Bluetooth very quickly, but also with a charging USB cable from the truck to a nice dash mount hooked on the an air conditioning vent. I should get a picture of it - I bought the mount - A Grip All in One Mount from Verizon and it works ok - keeps the phone face visible but below the upper surface of the dashboard, and easy to reach for touch commands on the phone surface. I think Siri will work but I confess I do not use Siri mostly because I refuse to use Siri, or Alexa. Call me an old curmudgeon.
I do rather like the the OEM GPS in the truck, despite its location in the dash which. is remarkable because I routinely dislike OEM GPS units, and I routinely use my Garmin 3597, which I greatly prefer to any OEM GPS I have ever used - I strongly prefer the screen position of sitting up on top of the dash, rather than down in the dash requiring one to look away from the road with OEM GPS units. ( I have used Garmin GPS units on motorcycles and cars since its introduction in the 1990s so I feel very comfortable with them and the 3597 is one of the best they ever made IMHO. It does respond to voice commands, but again I refuse to do that )
The truck does pretty well with fuel I think - I drove to Denver and back in a nasty winter storm for the lunar eclipse, and averaged 17.66 mpgs in 20ºF weather with snow flying while driving ~2200 miles at 75+ mph in some fairly significant winds. Road surfaces were secure except for a brief part of the trip along the Colorado Kansas border when I had to drive much slower 50-55mph.
The fuel milage is much better at 60-65mph. The fuel economy is affected by wind; the truck has a significant sail effect. Fuel in Denver was $1.79 at Costco. My fuel bill for the whole trip was $251.53 which is much less than a few years ago in a Tundra. Gas is cheaper now, but the milage was a bit better than the Tundra too.
At 55 -60mph I think one will average close to 20 mph depending on terrain, wind, and the weight of one's foot. I think the fuel economy is very close to my 2015 4Runner or better, and I usually - but not always - do running fuel mph talleys when travelling.
How do you get 6 seats? 2 in the front row, and a bench in the rear is what I have. I do like the very large console between the two front seats - gives me a place to stash a few tools, compass, binoculars, maps, and a free small treats with caffeine.