What is your DTE after fill-up?

Over two years of driving PRIME, I have filled the tank total of 48 times so far. I have kept accurate record of gallons filled, cost, miles driven, mpg displayed in between fill-ups. As you know with EV drive included in the distance, the displayed or calculated mpg has no meaning, unless you did all of the drive on HV. One thing I did not pay much attention to and did not keep record is the DTE (distance to empty) displayed immediately after the fill-up. In 48 times fill-ups, I only kept 6 records of DTE.

What is your DTE showing immediately after the fill up? I know some of you fill up so infrequently or never fill up the tank. But if and when you do, please report here.

What we know is that for PRIME's DTE, battery charge and EV range is not included into the estimation. If you drive all on EV mode, and never on HV, then DTE distance will not change. If you fill a tank when your battery is empty, and then you charge the battery full, you will not gain ~30 miles of EV range onto the DTE. It is strictly based on HV mode drive only. The initial estimate of the DTE after fill-up must be based on the mpg for the previous tank. Since it is the estimation of the distance to the low fuel light, which comes on when you have ~2 gal of fuel still left in the tank. The amount of gas used for the estimation of DTE must be ~9.3 gal.

Would that mean, if I am getting 574 miles on DTE after fill-up, was my previous tank's strictly HV only mileage, 61.7mpg (574/9.3)?

 

The DTE after my last gas stop was 526 miles. However, I was using grocery points discount on the pump and the pump reached a limit before completely filling up the tank. I had another car that took 16.4 gallons, leaving only 8.6 gallons for the PRIME. It was close, but I probably could have pumped another half gallon to a full.

 

I initially thought that DTE always reported the same number too, but evidently, they are fairly sensitive to some factor which I think is the real HV only mpg from the most recent tank. For my 6 records I have kept, they range from low of 526 to high of 574 all during warm months this year between Jun to Oct. I don't know what the number is like in winter, but I guess it goes down below 500.

 

AFAIK, the DTE displayed on the dash is solely based on your HV mode drive. It does not include any of EV drive you do or EV range you may add after charging. I learned this from @jerrymildred.

The distance shown on DTE is nowhere close to the ACTUAL range you can achieve from full tank of gas in PRIME. It is much shorter. My interest is to find out what others are seeing after filling up the tank how many miles the DTE is displaying and how variable this numbers are from fill-up to fill-up. My guess is this number is related to actual gas only mpg on HV drive you did on last tank of gas, but I am not sure of that.

 

I don't know. I never paid attention to DTE on my Gen3. I have zero record out of total 78 fill-ups, though I have every fill-up recorded with miles driven and gallons filled.

Just looked at my old record. The longest I drove on my Gen3 on a full tank was 552 miles. I know in Gen3 forum there are plenty of people who have done over 800 miles on a single tank. I really doubt their DTE was showing over 800 miles after a fill-up. And you are correct that DTE is not to the tank EMPTY, rather it is to the EMPTY LIGHT ON. People who reports 800 miles on a single tank are driving way beyond the empty light. That sure is one reason DTE is never close to the actual range.

 

Yeah, you still had ~1gal in your tank. What I want on the DTE counter is to count negative miles after it reaches zero showing "--- miles" on display. That way I know how far I run after DTE has reached zero. I have driven my PRIME ~100 miles after the empty gas light came on once, but still only took ~10.3gal to fill.

 

Just filled the tank. It was showing 512 miles on DTE this time. Much shorter than summer time high of 574 miles.