Newbie - mileage question

I wouldn't be. Yours sounds very normal.

 

FIRST: That's an estimated range - based on what kind of driving the car has in its recent history. If you drive a lot of highway miles, use the gas pedal aggressively, and the brake pedal aggressively, you won't get the optimal miles per gallon. The car really does better in the city, where you've got much lower speeds, and can take advantage of the dynamic braking more. That's true for regular Prius driving too. My wife (who is a teacher) drives mainly highway miles during the school year. Our 2019 Prime was showing a fully charged EV range closer to 20 miles at the end of the school year. During the summer, we used the car for short trips in town, and its fully charged EV range came up to closer to 28 miles. Same car, same battery, different driving styles.

SECOND: The measurement of MPG ignores the electric miles. If you consistently took trips of less than 25 miles, you'd be measuring 999.9 MPG. The standard Prius of that generation is rated at 54 City and 50 Highway. Since the first 20-25 miles are essentially free (according to the way the Prime calculates the MPG), 64 MPG sounds about right for the type of driving you've reported.

I wouldn't be concerned. That's consistent with what I've seen with our 2019 Prius Prime Advanced. With the MPG you've seen, it also sounds like your driving style is fairly conservative, so there's not much to be gained there - especially without pissing off all the regular ICE drivers on the roads behind you.

That tire pressure sounds fine to me. That's what I normally use for the summers around here. For winters, I bump that up by a couple PSI to keep from tripping the tire pressure alarms on cold days.

 

Your missing a few inconvenient truths & facts....

First, your traveling at highway speeds so your battery will deplete faster and it's an old battery with 161K on the clock - so some degradation and beyond it's 150K mile traction battery warranty. Still pretty impressive, I'd say.. I believe Toyota optimized the EV motor around 45 mph. whenever your on either side of the power curve - it gets less efficient. I also run my tires at 40 psi. all around.

Second, those claiming 100+ mpg is doing so on much shorter hops and mainly on shorter EV only trips. I'm one of those and my round-trip commute is 30 miles - 25ish miles on EV and the rest on ICE. I could do the entire trip on EV, if I can find an available charger at work - Usually monopolized by the BEV'er, so I rarely get to charge at work.

Not everything on the internet is true and if they are telling you the truth your not getting all the related facts.....

Hope this helps.....

@Danno5060 I guess we were both responding at the same time....LoL

 

My 2019 Prime does not ignore the EV miles but includes them in the displayed calculated mpg - l/100km readout. So in my case where I do most of my rides fully on EV my car shows l/100kms which started at 4.3l/100kms and is now slowly tracking down and at 2.2l/100kms for 750kms since refill. Fun to watch it slowly tracking down, will it get to minus l/100 so in theory making fuel while I drive?!. So if my car was showing MPG it would slowly track up until it showed the magical 999.9MPG.

Your true MPG

120miles/64MPG = 1.875 gallons

100/1.875gallons = 53.33MPG

but to get true picture bring up the Trip stats to see actual % of distance on EV mode.

 

@Moe_b
Reset the trip meter at the beginning of your day. You'll see your MPG is 999.9 MPG (gallons used will be 0) until the ICE kicks on. From there, it will drop as you actually use gasoline (unless for some reason it kicks the ICE on for some reason).

Calculating the EV MPGe (mile per gallon equivalent) is a complicated calculation, requiring data your car has no way of determining (cost of a kWh of electricity, cost of a gallon to calculate the gallon equivalent of a kWh), so there's little chance that the car can calculate the overall MPGe.

 

the odometer and trip counters are always correct in your distance traveled. MPG is derived from distance traveled divided by gallons used. If the ICE doesn't turn-on, you get a divide by zero error (undefined, mathematically), so Toyota engineers defined it as 999.9 miles/gallon. When your ICE kicks on, You'll see that number drop. After a while it'll get relatively close to actual MPG, because your slowly working off those "free" EV miles out of your calculations.