2024 Prius LE not getting good gas mileage

And?

What do you expect from this post? Do you want someone to change your mind because it doesn't seem like that's on the table. The car isn't for you. Plenty of us get good MPG. It sucks you don't. Maybe it's a skill issue, maybe it's something else. Doesn't matter though because whatever it is isn't going to change it seems.

The car isn't perfect, we each have our own little issues with it but no car is going to meet everyone's expectations. Go return it, get a different car. Life goes on.

 

could the brakes be dragging?

 

Simply raise the seat and lower the steering wheel, and you'll see everything.

40 mpg does not sound right. Perhaps you are miscalculating it? I get over 70 mpg in my 2021 Prius Prime Limited in the HEV mode.

 

Or driving in the B mode with engine braking.

 

o/p was getting about 55 in their 2020, so you might only get 50 in a gen 5

 

EPA rates the 2020 Prius at 52 mpg and the 2024 Prius LE at 57 mpg. So, according to EPA, they should be getting 60 mpg with their driving style.

 

The car is still new. The tires aren't even worn down to where they were for EPA testing, and there have been what, two fill ups. Then there are plenty of other things that could impact fuel economy. Tire pressure could be low. Alignment out of spec. The extra performance can lead to a heavier foot.

 

New or not, there’s no excuse for 40 mpg.
It’s either user error or car problem

 

Mr. Bisco is correct. These new cars don't really need break-in to get good mpg. I got mine with four miles on it, and the mpg was stellar from Day One, as in driving the car home from the dealer lot. A low tire pressure would light the warning lamp. These cars come with excellent alignment from the factory.

Heavy-footed? That is possible. Try driving in the eco mode and make sure you are not switching the gear selector to the B mode with engine friction turned on.

 

if they got 52-57 in their, it isn't likely driving style. i'd think calculation error, or car problem.
that being said, the nature of the post, and the complaints about gen 5 which could have been determined with a test drive, makes me wonder

 

wondering if we'll ever see @sdj make a post #2
guessing probably not.
wondering why @sdj made it's post #1

only been to SJ twice a couple decades ago.
Two dudes tried to push some of their crack my way on the street at night, After I said NO they came back with "don't ya wanna look at it" Ah NO ! ah sheet NO !

 

I don't believe the engine braking is engaged while you are pressing on the accelerator pedal. I may be wrong, but it wouldn't make much sense for it to do so.

 

I have a 2024 Prime, and my gas mileage is about 10% better than it was with my 2012 Gen 3.Of course I'm seeing a decrease in fuel economy during the winter months, but that's expected.

 

It could be a bunch of problems adding up.
Engine breakin
ECU adjusting to the particular engine part interactions
Winter grade fuel
15% ethanol vs 10% ethanol - My dealer used 15% on my new car.
Colder weather causing the engine to run to maintain temperature
Running cabin heat, causing the engine to run more.

My mileage in my Camry is getting better but still less than rated due to a mix of the above issues.

 

You drive only 200 miles per month; 6 miles per day average. I notice when I drive very short distances, the MPG suffers a lot when the engine is cold, and before the engine is fully warmed up, you stop driving. Why don't you reset the MPG screen and take a >30 mile trip and see what you get...You should get at least 50 even on the freeway @75mph. This method should be a more reliable assessment on your fuel economy.

 

I forgot to mention short trips REALLY affect mpg and amplify other factors.

 

Short trips may also allow moisture to buildup in the crankcase oil. I remember a member here driving their Prime without allowing the engine to turn on and come up to temperature have oil that was contaminated with water that had accumulated because it didn't burn off. It looked like a blow head gasket.

 

If it makes you feel any better, it also isn't designed for a larger person.

Or a driver problem, specifically,

A car that is mechanically more efficient can goad a driver into less efficient patterns. Some cars with turbos can be very efficient with short shifting and never letting the turbo scroll up, but lots of luck avoiding that fun.

I've never driven an older Prius, but if they took almost 11 seconds to get to 60mph and couldn't get really awful mileage, they may have taught people some poor habits.

ETA: I learned how to drive in aircooled VWs. These cars taught me that the normal way to accelerate in traffic is all out in red line, in every gear. That's a style that will have some downsides in other kinds of cars.

 

Have a look at the owner-reported Prius mpg stats here:

Toyota Prius MPG - Actual MPG from 9,188 Toyota Prius owners

I would think those who register their mpg on Fuelly tend to also strive for good mpg. Still, it's a mix. You have to go all the way back to gen 1 to see as low as 40 mpg. Gen 4 looks to be the mpg apex, due to some compromise in Gen 5, but the latter is still pretty good, 48~49 mpg range.

Something to note: from personal gen3 experience, and from what I've read here, all the way through Gen 4, the mpg gauge has been "optimistic", to put it politely. With my gen 3 by about 7%. But apparently with Gen 5 they've curtailed the practice, are keeping it honest. Might be a factor, if you're comparing your fourth and fifth gen experience based just on what the dashboard display says.