Poor mpg on 2015 Corolla LE Eco

[AliciaS]

I am at my wits end, neither the Dealer nor Toyota itself can find a problem and I only gt 19 to 21 mpg on my 2015 Corolla LE Eco.
The on board display shows similar low mpg as my calculated mpg.
Does anyone have the same problem. This is the first on a long line of Toyota's that I've owned that does not get me outstanding mpg.
Before you say anything, I follow and has always followed all recommendations to save gas.

 

[briar]

if the engine seems to run smooth but yet your mileage is that bad, I would suspect a dragging brake.

After some normal driving, stop and feel of each wheel. If one is obviously hotter than its opposite side you've likely found the problem.
(both fronts should feel about the same, and both rear should feel about the same)

 

[Muhammad Ali Khan]

Do you feel any performance issue in your car. Driving another car with same specs will give you that idea.

 

[Blkhillsguy]

In winter, I've already taken a huge nose dive. It's the winter gas. I've averaging 23 mpg at most. And in the summer I'm getting 35-38 mpg.

 

[AliciaS]

Thank you for your input, but I live in South Florida, our temp seldom goes below 75 even in winter.
I am open to any other suggestions.

 

[AliciaS]

if the engine seems to run smooth but yet your mileage is that bad, I would suspect a dragging brake.

After some normal driving, stop and feel of each wheel. If one is obviously hotter than its opposite side you've likely found the problem.
(both fronts should feel about the same, and both rear should feel about the same)

Thanks Briar, I tested the temp after a 5 mile drive, the wheels were just slightly warm and equal. Any other suggestions?

 

[FinalGear]

Alicia S,

Rotate those tires, check those spark plugs, make sure your overdrive button isn't engage, make sure your air intake isn't clod up, remove all those dead weights, etc

 

[AliciaS]

The car has been meticulously maintained above manufacture's requirements. Everything has been checked.
I think I got a lousy car.

 

[AJN]

Wow, seems to be to much gas going somewhere. dont' see how it could burn it all unless over revving. When going down interstate at 65 are the rpms below 2000. It should be. If over or between 2000 and 2500 your over revving for some reason. That would burn to much. Driving around town you can't gauge the RPM's but on interstate you can.

 

[briar]

Thanks Briar, I tested the temp after a 5 mile drive, the wheels were just slightly warm and equal. Any other suggestions?

Alicia,

Everything else I can think of should be setting an error code that Toyota would had seen.
It has been a couple decades since I have been an auto mechanic by trade so I don't have the specific knowledge needed to know what else could be doing it without setting a fault code.

I would be curious to see what the plugs looked like, are they sooty, are they tan... etc.

Most chain autopart stores will pull up the engine fault codes for free nowadays. Might be worth the time to swing by one and ask them to read the codes for you. They record intermittent as well as critical faults. It takes less than ten minutes to do.

Might be time to contact Toyota USA and ask for help.

wish I could be more help,
Briar

 

[AliciaS]

Thank you Briar. I did contact Toyota and the rep. that was assigned to me, changed for a bag of s**t you would be minus a god bag.
He referred to the dealer's findings which were no findings, suggested that I learn how to calculate the mpg and when I asked if my only option was to trade the car, he said that was an option open to me. I told him that he should be aware that after being a Toyota customer for more than 30 years, if my only option was to trade it would not be for a Toyota. he answered that as a consumer I was entitled to choose any car I wanted.
Great Customer Service!

I will try your suggestions.

 

[AliciaS]

Wow, seems to be to much gas going somewhere. dont' see how it could burn it all unless over revving. When going down interstate at 65 are the rpms below 2000. It should be. If over or between 2000 and 2500 your over revving for some reason. That would burn to much. Driving around town you can't gauge the RPM's but on interstate you can.

Thanks i tried it at 65 in the highway the revs stay below 2000.

 

[AliciaS]

Followed you suggestion, rpm just below 2000 at 65 mph.
I don't think that is my problem. It is a bit frustrating when other Corolla owner are getting much better mpg. I didn't buy an SUV because I did not want 20 mpg. Well my car has no problems, says Toyota.
Thank you.

 

[Warren]

Get a Used Oil Analysis done. You may have piston ring issue where too much fuel is getting past the rings (blowby). You can do a preliminary novice test by smelling the dipstick for trace fuel as well. Either way, it would take lots of blowby to effect mpg. Also check the air filter/filter housing to see if leaves or excessive debris is blocking passage of clean air. Tire (to low) pressure can also have a negative effect on mpg. Good luck with your dilemma, I'm confident you'll find a solution.

I live in the Kendall area (near Miami, Fl) and drive 75% city. My mpg is 28. Just for reference.

 

[Farmercorolla17]

Wow, that's LOW mpgs!
Inspect the MAF sensor....and swap with a good one to find out.

And did ya look at the plugs?

I know toyota changed to hotter spark plugs since 2014, with the prius and corolla engine.


Hopefully it's not an ecm or transmission issue
Good luck!

 

[Cesar Castro]

I get about 42MPG highway and 20MPG city. I have the same model 2014 LE ECO.

 

[AliciaS]

It is that 20 mpg in the city that I find hard to swallow. You are the first person to tell me they get this low mpg. I've not taken the car in a highway, but we do plenty of expressway driving.

 

[Cesar Castro]

It is that 20 mpg in the city that I find hard to swallow. You are the first person to tell me they get this low mpg. I've not taken the car in a highway, but we do plenty of expressway driving.

I get this low mainly because I do remote start and a lot of Idling. So per week I get about 25mpg. You should go on the highway and test it out to see what you get. Also, reset the average mileage indicator before doing so on the dashboard.

 

[Robert Lies]

Wow that is bad. This is high mpg driving on a 2015 let cvt

 

[Cesar Castro]

Wow that is bad. This is high mpg driving on a 2015 let cvt View attachment 2177 View attachment 2178 View attachment 2178 View attachment 2177 View attachment 2178

That's impressive to be honest. The most I get on the highway is 42MPG. Any special maintenance or tricks that you use ?

 

[Robert Lies]

That's impressive to be honest. The most I get on the highway is 42MPG. Any special maintenance or tricks that you use ?

That was on the highway,cruise on at 55.