Loving 2022 prius prime, but expected higher mpg

As normal as normal is these days at 85 and keeping up with traffic.

 

If you're scoring 45mpg while spending significant time at 85mph, you're kicking butt.

 

Yes, this would be normal MPG for HV operation per your statement. Plus, you will get lower MPG in colder weather since the ICE (gasoline) is used for heating the cabin. Your MPG will increase in warmer temps and with conservative driving.

 

try some conservative longer trips just to be sure there's nothing wrong. the epa tests are fairly conservative

 

You are not going to get good fuel economy at 85 mph obviously, as the air drag increases with the square of the speed.

You should get around the EPA highway value at 65 mph.

You should get around 70 mpg at 55 mph.

Try setting the A/C at 68 ℉ in the winter and at 78 ℉ in the summer. That will vastly improve the fuel economy.

 

A higher tire pressure also helps. I use about 41/40 psi front/rear.

 

If you are doing 500miles at 85mph, 45mpg is very good. Anything faster than 72mph, there is no EV, unless you are in a very long downhill.

Posted via the PriusChat mobile app.

 

Try a bottle of chevron fuel cleaner.

 

I bought my 22 Prime last March, and have taken three 2600 mile R/T highway trips so far. In the warmer months I got 49 MPG (gas only) running 75-80 avg (GPS - the speedo is 2% high and inflates miles and MPG). Last trip in cold weather was around 44 MPG, but I was going a bit faster most of the way. My old '13 Prius only got about 38 MPG under best conditions. Oh, that last trip was with winter tires, too.

 

Calculating your mpg is the best way to see your accurate mpg; Toyota has a propensity to exaggerate the dash displayed mpg (by a reliable ~7% on 3rd gen). It's good to track your tanks, see what helps/hinders mpg. Some tactics that will help:

1. Keep the speed down; be the slow-and-steady right laner.
2. Maintain a good following distance in traffic. This often allows you to avoid braking in minor slowdowns, which robs your momentum.
3. Plan your trips, consolidate errands. Avoid short, impulse drives, especially if something's walking distance.
4. Minimize AC use.
5. NEVER sit parked with the car on. If you have to wait in the car, just shut it off, crack the windows.

Set your display up to show the Hybrid System Indicator (HSI). This is 3rd gen, and a little simplistic, but explains the basics:

 

In comparison testing. Any PHV or even HEV that can score 48 MPG or better will be equal to an all electric vehicle. If driven the same and at the same speeds/acceleration. This is in terms of charging costs or for an HEV refueling costs.

So if you drive a bit normal 65 MPH to 70MPH, you will be equal or less than the cost of an EV.

Heck the standard Prius is often better performing than the PHEV if driven at speed. I regularly obtained 70 MPG while doing 70 MPH in the standard Prius. But I get worse in the Prime.

This is likely because the Prine is heavier by about 300 lbs.

 

Really disappointed that I can’t hit 1000!