2022 Tahoe RST w/ 3.0L Duramax.
Have about 5K on my truck and have noticed that from delivery till now my MPG city is horrible! I have taken the truck on 2 different small road trip, maybe 150 to 200 round trip, and have seen 28 MPG easy. My issue is I do a lot of stop and go, and shorter drives on a daily basis and can't seem to get anywhere close to the estimated 21 MPG that Chevy claims. I live around 14 MPG or so when using the 50 Mile option for tracking. Have read that the computer is wildly in accurate and about to start doing my own math from a fill up to see if there is a difference. I've been really careful about being heavy on the throttle and have been trying to live at 2K RPMs or less everywhere I go, just curious if anyone else is having a similar experience. For the first time yesterday I also got the "Cleaning diesel filter, continue driving" message so apparently my regens aren't being completed recently.