2025. CX50 hybrid...
This week: 22 mpg
Last week: 28 mpg at 200 mile return drive on highway
Three weeks ago: 31mpg
Four weeks ago: 33 mpg...
Ok, I know it's cold weather, but this CX 50 HYBRID is gettin crappy gas mileage...
Should've kept my VW Passat TDI: 43 MPG on the highway...
Very disappointed...
GDP

 

Welcome to the forum

 

The problem with threads like this is the members don't take the time to really fill out their profile so in this case not knowing what state you live in it's hard to answer your question?
So we all must pull teeth to get basic information to help answer your sort of question?
There is naturally generic answer as to why ,,,,, but then this MPG has been thrashed out on at least a dozen or more threads on this forum as well many other Mazda forums.?
Then you join and crap on your Mazda and state negative attributes first perhaps getting some valid answers.
Platform specific vehicles like this one don't like when a new member(s) joins and is so unjustifiably negative.

BTW I can tell its not your Mazda that has the any problems! lol

I have one of the most cared for and tuned Mazda ion this forum and my MPG is now as usual lower during the winter months. This is a common fact that has gone on for a few decades having to do with the USA and gas formulas in this case most all states are currently using a WINTER FORMULA. otherwise also call WINTER-BLEND/

And if you live in a few states like California, it is the worst fuel available for this time of year to achieve the best power output and at least maintain the average MPG normally computed during other seasons of the year. Some platform and engines ECUs programing are more sensitive to the careful balance of MPG vs lower emission, and the effects are registered more predominately in the lower MPG.

Other Mazda are affected more specifically Skyactiv engine from about 2013 to preset gas engines that the engine and transmission break in period which can be up to 10-15k miles.

The cautionary thing to do if you are under the engine and transmission break in period is to go to Mazda and have them scan the complete ECU to be sure nothing is going on even if your check engine light has not been activated.

Lastly try changing to a top tier gas use. Chevron, Shell be the first top 2 best choices.

Lasty use the instant MPG dash monitor and learn to drive better. No one can improve as much by tailoring your throttle control habit by monitoring the instant MPG.
Some may recall auto manufactures having a vacuum gauge in some models that on function was to improve MPG usage.

 

I've owned my CX-50 Turbo PP for about six months, 7900 miles, and I too am disappointed with fuel efficiency.

Around town, I can baby it and get 26 MPG, but if I drive it like a normal person, 23 at best. If I do a flat 55 MPH on the highway, I can get 28 MPG, as long as the road is flat and there are no stops. But no one does 55 on the highway. At interstate speeds of any steady speed between 70 and 80, I am rewarded with 23 MPG.

I've been running 87 octane since new but switched to Chevron Premium for the last two fill-ups. The numbers haven't changed, but at a dollar more per gallon, I'll go one more tankful, then go back to 87.

My 84 Towncar did almost as well and was a hell of a lot more comfortable.

 

Your response is indicating a couple things. Your engine and transmission are not fully broke on.
If switching from 87 to 91 saw now difference in mpg then your driving habits need to be changed.
maybe use the instant mpg and try readjusting your Throttle pattern of use.
Maybe an old driver of 56 years can learn something new ….oh wait maybe that why the saying you can’t teach old dogs new tricks?

 

I never get fuel economy threads like this. There is no method or data given. Are you using the computer mileages? Are you using manual math? How many miles is this average established over? What are the driving habits? Where is this mileage taken? What is the temp where you are? How long do you remote start or idle? Nothing given at all just random numbers. The first post by GDP admits cold weather then gives one week 33, next week 31 then settles down to 22 for a week. The first two seem normal, final a bit low but nothing referencing data at all. The next post for the CX-50 turbo doesn't even list data outside the estimates. Around town babying it 26, normal personing on it 23. The estimates are 23 city 29 highway 25 combined average. That 23 is exactly what is claimed. Then a claim of 28 on the highway. The estimate is 29. It's winter. The person doesn't even know highway isn't freeway. There is a difference (at least in the USA). I don't get it.

 

Welcome to the forum
Interesting way to introduce yourself and firt post after joining the forum?
*Then you don't get around the forums much...

Most really do not know how to drive to gain the highest MPG. And don't understand that it takes several tank fills and driving on the same route to establish what the actual average MPG is.
You read like a person that does both onboard and pencil to paper MPG estimations. Which if you are that is the best way to do it.

 

I wouldn't consider myself new as I been around 4 years with a couple dozen posts. You have even responded a couple threads of mine. Maybe you were referencing the first post guy as it was his introduction complaining about mileage and wishing he kept his other car. Oh forums.


But yeah I do both. I try not to obsess over MPG because it fluctuates so much which is why I wonder about threads like this. I monitor the vehicle counters - the info screen history, drive results, trip1, and I enter my fuel records in an app as much as I remember. I find my vehicle hangs around the claimed averages if not a bit above.

 

Yes I was! I was scrolling back and forth between your post and his trying to catch upon what was said. Only glanced at one post new member. And possibly only caught the 1 like on yours?? IDK . Between coffee and breakfast before I am out the door for work? LOL

I agree
I actually did a specific and targeted EFI/ECU Calibration for road trips that are below 3000 ft and posted 42MPG. If I posted my actual based on a 1000+ mile trip it would have cause KAOS on this forum... lol

 

Campb292,

I am new to the forum, and while I may not know the difference between a highway and a freeway, I was actually driving before there was an interstate system in most of the country.

My brand new 1974 Mazda 808 got over 33 MPG, so I'm not really new to Mazda either.

I remember gas going from 32 cents to over 55 cents overnight. I was going cross country from California to Idaho and wasn't paying attention to the news about the Arab embargo. I spent a few days in the Tri Cities, Oregon, waiting for gas. A few years later, I did a lot of experimentation on my old Buick (heating the fuel lines, etc.), looking for better mileage in a very controlled manner. So I think I know something about accurately determining gas mileage. And as a lifelong aviator and aircraft owner, I've learned a lot about fuel management and how to conserve it. I understand how winds, weight, mixture, and so many other factors impact economy

I post when I want to hear about experiences and I respond when I have information that can help others. Others just like to respond to a post to increase their count or to show how clever they are, while adding nothing. You've added nothing.

Insults, even vague, toward a stranger on the internet... Ask yourself if you'd talk to someone you just met face to face like this. You might want to focus on building your self-esteem in other ways because this isn't working well for you.