Toynut

I am aware of in tank fuel pumps. I don’t jump on the gas in my Hellcat powered Trackhawk without at least a half tank of fuel to prevent a lean out condition upon acceleration. The factory calls for 2.2 gallons left in the tank before the refill light goes on. This has not been the case with mine ( and apparently others on this thread). Safety margin aside, the vehicle is at least 3-4.5 gallons short of a full tank if the 2.2 gallon lower limit is reached. When the dealer handed us the new vehicle with a full tank of fuel in it, the MTE indicated somewhere around 450 miles. Every subsequent fill up is off by 100-125 miles or more. Something isn’t adding up, no matter how it’s calculated. Even with the mediocre 20-21.5 mpg indicated, the MTE should trip at 45 mile range or better, and not at 17, if there is a fuel level sensor that is calibrated to light off at 2.2 gallons in the tank. Can’t seem to get more than a head scratch from the dealer tech. The car is not driven aggressively in our suburban environment. I haven’t had it on any long trips yet, but I am curious if there will be a substantial improvement or when the weather warms up come late spring.

Interestingly enough, some of the YouTube videos indicated high 20-low 30 ish mpg in their videos ( mostly California videos).

I agree that there is either a software issue or a problem in the filler neck that prevents a complete fill ( my Jeeps make me upend the pump nozzle to add the last 3-4 gallons on occasion). This Lexus is the first Toyota product I have purchased since the 80’s and plan on a GX 550 overtrail when they release a hybrid version. This issue, as well as the fairly low fuel mileage is not exactly comforting.

Bobfab, I believe that the fact that we both live in colder climates might negatively impact our winter mpg. This might be due to the semi hybrid nature of the drivetrain. I am curious to know if the e-assist from the batteries is diminished due to the cold as well, like a typical EV?

I have 1400 total on my 2024 F sport and getting 20.5 MPG.

I guess that the issue still stands that either the miles to empty range indicator is reading incorrectly ( overly pessimistic about range left to empty) when I theoretically have at least 4 -4.5 gallons left in the tank, or something ( an obstruction in the neck perhaps) is not letting me actually physically fill the tank to it’s full capacity. I have a Hellcat powered Trackhawk that forces me to rotate the butt of the fuel nozzle to a 1:00 O’clock position to add the last 4-5 gallons in the tank on occasion. In my former business life, I owned a pretty large operation of auto parts warehouses and would have annual sales of $2 -3 million in fuel pump category ( many OEM pumps fuel senders failed on domestic vehicles in large part due to the introduction of ethanol fuels in the early part of the century, so I am familiar with bad fuel senders. Finally, I never let my cars run to the fuel empty light lights up ( this is my wife’s car) but, it should give warning at a minimum of 40-50 miles based on her current 20 MPG. I just happened to be driving it that morning.

Hello everyone, first time posting on this forum. I recently purchased a 2024 RX500F sport for my wife and have a question for the embers on this forum. I understand that the vehicle has a 17.2 gallon fuel tank. I recently had a chance to notice that the low fuel indicator only came on at approximately 17 miles remaining range ( instead of 50). I went to fill it up and could only put 12.8 gallons of fuel in it after letting click 4-5 times. I had previously brought this up to the dealership who could not give me an answer ( I thought a fuel sender calibration might be off). BTW, the mpg indicator is reading approximately 19-20 more or less with about 1,300 miles on the vehicle. I