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I've owned my vehicle for nearly 16 months and up until about two months ago, I was able to see the DTE as 308 miles once I filled the tank. I have noticed the last few weeks that it is saying 281. I have not really changed my driving habits. I still have the same commute to work. I do have a slight lead-foot so I have been utilizing cruise control and keeping my speed within 5 miles of the posted limit. Can someone help me understand what else I need to do?

Maybe I am just not understanding it correctly. If I reset all my mileage trackers each time I fill the tank...why won't the DTE got back to where it used to be a month ago...308? And I must say that I agree with others that this tank is very small. I have to gas up an average of three times a week. But my commute to work is 72 miles round trip. I also hate that there is not warning for the wiper fluid. You have to check it manually. Seriously?
 

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I've owned my vehicle for nearly 16 months and up until about two months ago, I was able to see the DTE as 308 miles once I filled the tank. I have noticed the last few weeks that it is saying 281. I have not really changed my driving habits. I still have the same commute to work. I do have a slight lead-foot so I have been utilizing cruise control and keeping my speed within 5 miles of the posted limit. Can someone help me understand what else I need to do?

Maybe I am just not understanding it correctly. If I reset all my mileage trackers each time I fill the tank...why won't the DTE got back to where it used to be a month ago...308? And I must say that I agree with others that this tank is very small. I have to gas up an average of three times a week. But my commute to work is 72 miles round trip. I also hate that there is not warning for the wiper fluid. You have to check it manually. Seriously?
NO washer fluid light ?

I thought that was only overseas. I have one (page 4-26 on North American owners manual)


Gas Mileage ?

First deep freeze in 16 months ? Not sure how bad weather has been where you are, but warming up and slipping and sliding reduces my gas mileage every winter.
 

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I've owned my vehicle for nearly 16 months and up until about two months ago, I was able to see the DTE as 308 miles once I filled the tank. I have noticed the last few weeks that it is saying 281. I have not really changed my driving habits. I still have the same commute to work. I do have a slight lead-foot so I have been utilizing cruise control and keeping my speed within 5 miles of the posted limit. Can someone help me understand what else I need to do?

Maybe I am just not understanding it correctly. If I reset all my mileage trackers each time I fill the tank...why won't the DTE got back to where it used to be a month ago...308? And I must say that I agree with others that this tank is very small. I have to gas up an average of three times a week. But my commute to work is 72 miles round trip. I also hate that there is not warning for the wiper fluid. You have to check it manually. Seriously?
Have you checked your tire pressure? Might have dropped with the recent deep-freeze.

As for the wiper fluid warning light, that's bizarre. I have one. :confused:
 

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Have you checked your tire pressure? Might have dropped with the recent deep-freeze.

As for the wiper fluid warning light, that's bizarre. I have one. :confused:
Interesting observation. Okay, for those of you who state they have low wiper fluid warning light: Has anyone actually seen it lit? That's the $64,000 question. My owners manual does describe the low wiper fluid light on page 4-26 however there is that pesky asterisk preceding which indicates "some models". Now is that "some models" such as GT versus Sport everywhere, OR maybe some GT models in some markets (countries), OR perhaps just some markets (any trim). From my Acura days, isn't that washer fluid warning light required in Canada? Anyway, my question again is: has anyone ever had it actually light up? Reason is that in my 2017 GT, there is the outline of that indicator light (low washer fluid); it is directly under the gas cap warning light. It has never lit on mine and a few weeks back I let the washer fluid get pretty low to try to see if it would light-up. Nope. So I just filled it as I was going on a 300 mile trip up north and I needed to make sure the washers would work if required. BTW, my washer reservoir jug has a crazy dipstick of sorts attached to the cover to indicate current level, so maybe that's a clue as to the warning light.
 

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Interesting observation. Okay, for those of you who state they have low wiper fluid warning light: Has anyone actually seen it lit?
I have seen it lit. And was tickled to find out that the reservoir holds an entire ~1-gal container of the stuff when I refilled it. No more half-full jugs sliding around in the back!

Maybe you didn't let the fluid get low enough? It does hold a lot.
 

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I have seen it lit. And was tickled to find out that the reservoir holds an entire ~1-gal container of the stuff when I refilled it. No more half-full jugs sliding around in the back!

Maybe you didn't let the fluid get low enough? It does hold a lot.
Probably didn't let the level go low enough. I know I added way less than one gallon and the level was right at the top of the filler neck.
 

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I emptied the washer fluid tank in mine a while back and no light came on. ¯\_(ツ)_/¯

We've been having some awful cold temperatures in Illinois... any chance your DTE drop happened around the same time as our extended cold snap? It could just be the extended warm-up time coupled with the loss of pressure from the tires. The rule of thumb is that you lose ~1 psi for every 10F drop in temps. So, if you set your pressures at 70F and it's been 10F, you've lost 6 psi.
 

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Disregarding the washer fluid thread jack, most of the comments above directly relate to changing the mpg. I suspect the drop the OP noticed is due to the effects of cold weather on engine efficiency, longer commutes in slower traffic, and increased idling. When I lived in Alaska my winter mpg was 3 to 4 lower than in the summer.
 

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I have seen it lit. And was tickled to find out that the reservoir holds an entire ~1-gal container of the stuff when I refilled it. No more half-full jugs sliding around in the back!

Maybe you didn't let the fluid get low enough? It does hold a lot.
To be honest I'd give up a half gallon on that reservoir if I could get it back on the gas tank of my AWD! :laugh:
 

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I'd give up a half gallon on that reservoir for wiper nozzles that work. :mad:
 

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To be honest I'd give up a half gallon on that reservoir if I could get it back on the gas tank of my AWD! :laugh:
That's the only thing which bugs me; the relatively small gas tank
 

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Or not. There is both a low oil pressure warning light and an oil dipstick....


.
Ahhhhhh, not quite the same thing, but I get your point.
 

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The CX3 Hold A lot of washer fluid. I was quite surprised. The light does exist... I've seen it! (Do I win a prize? ha!)
BUT (you knew there'd be a "but" here), does this light exist for certain markets only? I see you reside in Canada. Isn't this warning light required in Canada? I had a Honda Pilot ten years ago, and I recall only the Canada models had a low washer fluid light, not the USA models. My Acura MDX displayed a message, but no light.

BTW, how did you get all the lights to actually light up? Nice work.
 

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BUT (you knew there'd be a "but" here), does this light exist for certain markets only? I see you reside in Canada. Isn't this warning light required in Canada? I had a Honda Pilot ten years ago, and I recall only the Canada models had a low washer fluid light, not the USA models. My Acura MDX displayed a message, but no light.

BTW, how did you get all the lights to actually light up? Nice work.
Haha. True, I looked everywhere and couldnt find that answer... As for the picture, I stole it off google ;)
 

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Isn't this warning light required in Canada?
No, it's not a requirement. If it were, it would have to be on the list of import requirements for bringing a car into Canada. Things like daytime running lights and a metric speedometer are on the list, but washer fluid warning light is not.
 

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If I reset all my mileage trackers each time I fill the tank...why won't the DTE got back to where it used to be a month ago...308?
DTE is based on CURRENT fuel economy, and it recalculates once per second as you drive. So when you fill up and restart the car, the DTE number shown isn't going to be exactly the same every time because it's calculated based on the mileage you were getting at the time. If your DTE has gone down compared to last month it is because your current average fuel economy is not as good. Unfortunately the reasons for a drop in fuel economy are numerous.

As others have mentioned, it could simply be cold weather depending on where you live. It's perfectly normal for mileage to drop slightly in winter conditions. I usually get around 7.8 L/100 kms in normal city driving, but this winter I'm averaging about 8.2. That's about a 5% drop in fuel economy.

Check tire pressures as well. I know it's unlikely a tire would go down without tripping the tire pressure warning light, but it's possible all 4 weren't set correctly in the first place. It's surprising how big an effect just a few pounds can have on mileage.

For the next while it might be a good idea to check the MPG display and write it down whenever you fill up, then reset the display. If you have cold winters where you live then wait to see what happens when it warms up. If your mileage continues to drop then there's always the possibility you have a mechanical problem.

Good luck...
 
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