Does anyone actually get the posted 22/24 mpg?

I have the 275 Nitto Terra Grapplers G3's and the standard roof cross bars... and am running at 17.2MPG... after getting my high pressure fuel pump replaced. I'm not overly aggressive in my acceleration and was 21+ before I started having issues... back to the dealer I go

What is the dealer going to do to help address it?
 
3,000 mile update from Minnesota.
  • (0-500) miles: 24.2 MPG
  • (500-1000) miles: 25.1 MPG
    • fall driving, warm temps, no snow
  • (1,000-2,000) miles: 23.0 MPG
    • getting colder, some snow on the ground
  • (2,000-3,000) miles: 20.3 MPG
    • Very cold weather, more idling to warm up vehicle, crappy winter blend fuel
    • Minnesota's worst month for MPG, cars just don't like this weather.
This is on a 1958 with stock 18" Yokohama 245/70R18 tires and no roof rack. Mostly easy highway commuting miles.
 
The dealer stated that I'll get better MPG after replacing the fuel pump because I was "eating gas" and I have seen no improvement. My assumption is something else is going on...

Ugh this sucks, good luck hope they can find the root cause. 😕
 
1958 here, 680 miles in, 22.8 MPG. Everything is still stock, but new tires coming next week. We’ll see what changes after that.
 
Driving the posted speed limits between Cherokee County, North Carolina and Ooltewah, Tennessee, using cruise control the entire trip, Miss Daisy 🌼 just got 24.4 mpg.

Stock Michelin’s, 93 octane, ethanol free, with the air dam/brake still on the roof.
 
Got a new personal best yesterday of over 29 MPG on a short trip of 18 miles in Eco mode under ideal highway conditions. All stock with 20 inch factory wheels and roof rack crossbars. The LC could smoothly maintain cruising speed of 60MPH at 1,500 RPMs and 65 MPH at about 1,700 RPMs.

Overall, not too much of a compromise when it comes to driving style. Just needed to stay conscious of when and how to use the battery assist to nudge it along without revving up RPMS. So relied primarily on the tachometer rather than the speedometer.

This experiment is consistent with the measured results I have seen at the gas pump. About 21 MPG city and 25 MPG highway and a single tank range of about 350 miles for mixed use driving.

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Got a new personal best yesterday of over 29 MPG on a short trip of 18 miles in Eco mode under ideal highway conditions. All stock with 20 inch factory wheels and roof rack crossbars. The LC could smoothly maintain cruising speed of 60MPH at 1,500 RPMs and 65 MPH at about 1,700 RPMs.

Overall, not too much of a compromise when it comes to driving style. Just needed to stay conscious of when and how to use the battery assist to nudge it along without revving up RPMS. So relied primarily on the tachometer rather than the speedometer.

This experiment is consistent with the measured results I have seen at the gas pump. About 21 MPG city and 25 MPG highway and a single tank range of about 350 miles for mixed use driving.

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Seems very doable in my experience. I have one of my instrument layouts with the iForce meter (electric motor output) on one side and the turbo boost on the other. I've found that by following the Car Care Nut's advice for hybrid driving (pulse and coast) I can pretty easily get into the mid to upper 20's if it's 50 degrees or above though I acknowledge that this kind of driving might not be everyone's cup of tea to the point of being frustratingly slow at cruising speed or taking too much attention away from other things. There's also the issue of classical physics - if you're a jackrabbit the mass of the LC (plus cargo, heavy offroad tires, etc) has to overcome a significant moment of inertia, if it's cold out thermodynamics are against you, if you can't drive 55 then there's the ole square of the velocity acting on the cross-section of a brick to reckon with. Life is a series of compromises...
 
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