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Old 05-13-2014, 08:42 AM   #1
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Gas Mileage Towing the X17Z - 10 MPG

Hi everyone,

We just got back from our first trip with the X17Z and it was fantastic! We'll be going back up to Maine for Memorial Day.

This was my first time towing anything and as you can imagine I was surprised about the gas mileage I was getting - 10 MPG.

Our tow vehicle is a 2011 Mazda CX-9 Grand Touring AWD. It's properly maintained, good tire pressure, V6 270+ HP, AWD, etc. I was averaging 60 MPH for a 100 mile trip, all relatively straight and flat.

I realize the CX-9 isn't the tow vehicle of choice, but is 10 MPG something I should just get used to? We brought our two small kids and a small dog in the vehicle. The trailer had no water, tanks empty, but included the "normal" stuff you pack for a weekend.

Here's a picture of the rig all setup leaving the campground.


- Scott
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Old 05-13-2014, 08:57 AM   #2
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I just traded in our x17z, but we were getting about 10 mpg average towing with our GMC Sierra half ton pick up with a 5.3 liter V8. Average speed slower than 60 mph and towing in the northern Adirondack mountains. The 17z pulled harder than I expected. We started out towing it with a Colorado 3.5 liter 5 cylinder truck, but soon realized that it was not big enough. Jayco advertises that the Z can be pulled by small SUVs. That may be true but it sure is hard on them. Just my experience. Your mileage may vary :-)
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Old 05-13-2014, 08:58 AM   #3
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I just traded in our x17z, but we were getting about 10 mpg average towing with our GMC Sierra half ton pick up with a 5.3 liter V8. Average speed slower than 60 mph and towing in the northern Adirondack mountains. The 17z pulled harder than I expected. We started out towing it with a Colorado 3.5 liter 5 cylinder truck, but soon realized that it was not big enough. Jayco advertises that the Z can be pulled by small SUVs. That may be true but it sure is hard on them. Just my experience. Your mileage may vary :-)
BTW, I towed it with the water tank full.
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Old 05-13-2014, 09:11 AM   #4
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I just towed our newly purchased X23J (5000lbs+) for our first real camping trip. I was ranging anywhere from 9-16mpg depending on the wind direction. That's with the truck described below in my signature area.
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Old 05-13-2014, 09:21 AM   #5
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Seems like everyone gets around 9-10 mpg no matter what camper/truck combo they have lol.
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Old 05-13-2014, 09:25 AM   #6
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Seems like everyone gets around 9-10 mpg no matter what camper/truck combo they have lol.
Wind drag plays a big role also, especially at higher speeds.
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Old 05-13-2014, 09:41 AM   #7
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As said in the other thread, keep in mind that you are towing a box down the road and by doing so you have the aerodynamics of a brick. To get an idea of what strains your vehicle is up against, hold up a 4'x4' sheet of plywood and run into the wind.

Quote:
Originally Posted by Rick56 View Post
Jayco advertises that the Z can be pulled by small SUVs. That may be true but it sure is hard on them. Just my experience. Your mileage may vary :-)
Being hard on them is going to be true anytime you push the towing capacities of any vehicle regardless of size.

We towed our old Kiwi 17a, ancestor to the X17Z, with a '03 Trailblazer that had a 4.2l I6 and 3:42 gears. It towed like a dream, even though mountains out west. When we got the X20E I was pushing the limits of that Trailblazer and yes, I could really tell the difference. Adequate at best and certainly not up to towing it through mountains.
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Old 05-13-2014, 10:34 AM   #8
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Originally Posted by Daytripper View Post
Seems like everyone gets around 9-10 mpg no matter what camper/truck combo they have lol.
X2 for the gassers. x23B and 05 Pathfinder, I average from 8-11mpg going 65mph, depending on wind and terrain...
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Old 05-13-2014, 03:03 PM   #9
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Thanks, everyone! Would trying 93 octane gas make a difference? Currently we only use 87 octane.

It pulls nicely at 60 MPH so I'm not concerned with the vehicle at all. I guess I was hoping for 12 MPG or so, but it's not that great on gas to begin with so I'll drop that dream haha.
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Old 05-13-2014, 03:07 PM   #10
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I used to get 12 when I towed my old Kiwi 17a with my Trailblazer. But that was on flat land with no wind.

Your computer is programed to work a specific way. If it encounters higher octane it will simply adjust the operating parameters to keep the emissions working properly. So 93 is a waste of money unless your Mazda's owners manual says premium can be used as an option.
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