Slight Concern about MPG

Thank you, that's what I believe too. My thoughts are: (a) It's freakish cold --- affecting MPG (b) 1st. GF-5 oil change.

I believe maybe at around 6.5k I'll get upwards of 31 mpg highway. Keeping my fingers crossed. If not: will be royally pissed off.

Just a note: I have a 2007 Rolla. I get 36 to 38 mpg easy on it. I am NOT comparing with CX-5 but just throwing out a note about my driving habits. It's good to solid when it comes to MPG.

I have 40K miles on mine and it doesn't get anywhere near 31mpg unless you do 50-55mph. Doing 70, you get around 28-28.5 on road-trips across Texas.
 
Maybe there is something we can do to improve fuel efficiency at speeds?

The front bottom of the cx-5 has engine splash shield and also there is underbody cover in the mid sides which helps the aero dynamics. The exhaust pipe/driveshaft section and rear pumper area is exposed. The rear section from just eye balling the area and the bumper, it seems that at speeds it could act as a parachute effect.

-How about making a splash shield/flat underbody cover for the rear bumper to direct the flow air out the rear, instead of what looks to now just go up to behind the bumper?
-Also, cover the middle section as well where the exhaust is. But maybe leave a couple holes or slits to allow exhaust piping heat to escape/cool?

Out of the two above, I would say the rear section is “more important” but if you can do both even better! This will not only potentially improve MPG’s at highway speeds, but may also improve handling slightly as well at those speeds.

Yes I know, you shouldnt have to do this as your car should be meeting the EPA. But since its not, so why not try to improve what you already have?

In addition to the above, how about also covering the bottom half of the bumper completely or leave a couple holes/slits for a little air to flow through? Possibly use all black plastic or transparent plexiglass/something similar for aesthetic purposes.

We can complain until the end of time. How about doing something about it?!

Other things I was thinking about are, we have two catalytic converters. Assuming its a little restrictive running both. How about removing one? It would probably be best to remove the closes one to the motor but that would be hardest so maybe the second one underneath. Assuming both are equal in flow rate.

In addition, I really wanted to remove the Balance Shaft. But after looking at the FSM for the 2.5 motor (thanks Chris) our BS is not the same as the 2.3 motor where it can jus drop out. The 2.5 BS is chain driven! And not only that the oil pump is spun with the same chain. On the Nissan 2003 Sentra SER QR25DE motor the Balance shaft was chain driven as well but the chain can be cut off and balance shaft taken off as no other items were driven by that chain. My MPG’s went from 20 MPG’s to 25-26 MPG’s just removing the balance shaft. I only experienced ever so slight vibration around 3.5k rpms and above.

Edit- Also lighter rims ! Reducing rotational mass means less work/energy the motor has to do/waste to spin the wheels.
 
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I have 40K miles on mine and it doesn't get anywhere near 31mpg unless you do 50-55mph. Doing 70, you get around 28-28.5 on road-trips across Texas.

So your car does get near or around 31 mpg if you do 50-55 mph ?
 
http://www.motortrend.com/news/2015-honda-cr-v-touring-awd-review-update-1/

Motortrend ended up with gas mileage less than EPA for Honda(28.8, when its rated at 33 for hwy), as well as the Rouge. Which was as well stated in this article. So from some of you claim that the CX-5 is the only CUV that can't hit EPA, think again. But we know all 3 vehicles can hit EPA, if not exceed. But this article just goes to show that there are other CUVs not hitting EPA estimates.
 
2016 CX5 with AWD, roof rack, OEM mud flaps and Continental Tires:

I get 30-31 MPG highway while doing 55-60MPH

I get 28 MPG highway once I get above 65-70MPH
 
2016 CX5 with AWD, roof rack, OEM mud flaps and Continental Tires:

I get 30-31 MPG highway while doing 55-60MPH

I get 28 MPG highway once I get above 65-70MPH

Assuming OEM roof rails and crossbars: try to remove the crossbars. Mine are lying in the garage, unless I need them.
 
WIND is a big key factor...

I just drove a 40 mile stretch of road.

65mph speed, flat ground.

Drafting behind a SEMI Trailer... 33.8mpg sustained
In front of the Semi trailer... 31.3mpg sustained
30 mph headwinds...25.8mpg sustained
 
Qur main driving are short trips. Just to go out to eat or go to Wal-Mart, 5.1miles from home,
we have 2 stop signs and 9 red lights.We take a 1200 mile trip once a year and still Avg 31.MPG.
Cant complain at all.Here is a chart for full year.
<a href="http://s108.photobucket.com/user/mariner_03/media/2015%20gas%20milage.jpg.html" target="_blank"><img src="http://i108.photobucket.com/albums/n1/mariner_03/2015%20gas%20milage.jpg" border="0" alt=" photo 2015 gas milage.jpg"/></a>
 
I've had my Cx5 for about a month now (bought it brand new), and i noticed ive been getting about 20 MPG on average and when i fill up the tank only goes about to 275ish. Should i be concerned? Most of my commute is city driving and at the most drive about 10-15 miles to and from work. Just curious as to whats affecting my MPG and if i should be concerned or not.

I wasn't impressed with my the fuel mileage of my 15 2.5L fwd cx5 either. 30k miles later I ended up trading it in on a 15 Durango and the fuel mileage isn't that far off from the cx5 for something much larger than the cx5. I average 20mpg in town with a v6 in the Durango and the cx5 I was averaging around 21-22mpg. The CX5 was a good little car but I wouldn't recommend it for anyone with a family or anyone that needs a backseat to haul anyone over 5 around daily.

Stop & go city driving yields poor mileage and ~ 20 doesn't sound terrible bad. Try to accelerate smoothly and brake as little as possible. You mileage may increase 1-2 mpg as you approach 3,000 miles or so from my CX5 experience. Ed

I didn't really see much of a improvement vs driving it easy vs my normal every day driving. It wasn't worth effort for the improvement. I will say staying 60mph on the hwy helped but wasn't worth my life when everyone around you is going much faster and coming close to hitting you for doing 60 in the slow lane.
 
WIND is a big key factor...

I just drove a 40 mile stretch of road.

65mph speed, flat ground.

Drafting behind a SEMI Trailer... 33.8mpg sustained
In front of the Semi trailer... 31.3mpg sustained
30 mph headwinds...25.8mpg sustained


EPA tests also use gasoline with no ethanol added. Meanwhile many pumps dispense gas with up to 10% ethanol, which is less energetic. Ethanol plus winter blend gas can knock 5-10% of the energy out as compared to what the EPA tests with. Add in cold engines and windy weather and a 4-5 mpg drop occurs - I see a similar pattern on winter trips. Could explain why these mpg complaint threads are more active in winter too.
 
I'll look for it. There is a thread on tbe Mirage forum for high mpg mods. These guys already get 45 mpg without trying, the misers are getting like 60.
 
I conclude that your mileage mostly depends on how you drive. I've no complaints about mileage at all, city or highway. Heck, last August we went from Toronto area to Jersey City and back, averaging 33.13MPG calculated. I haven't ever exceeded the speed limit, enjoying the ride and the landscape. I did almost the same trip in my Tahoe, visiting Brighton Beach in NYC in September. 21.78MPG calculated. I can live with either number.
It takes a lot to push a brick through the air at highway speeds. Think how many minutes are you going to save by driving faster/aggressively and what are you going to do with all that time... Watch your driving, and you'll be OK.
 
Just look at my fuelly. My trips are long highway commutes with traffic keeping speeds in the 60-70 mph range at times. This boosts mileage so long as I keep enough distance to keep off the brakes. Getting over 30 mpg is easy to do in a CX5 in the right conditions and with the right driving style. I do not accelerate slowly but get up to speed smartly and then try to maintain momentum by letting her coast as much as possible. The 2.0 Skyactiv really responds well to this, I had 13 sport and now a 14 Touring.
 
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