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Fuel economy sweet spot and the CVT

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Guartho
New Member
Posts: 4
Joined: Sun Jun 12, 2011 9:53 am

Fuel economy sweet spot and the CVT

Post by Guartho » Tue Jun 14, 2011 1:42 pm

We've been doing a lot of MPG testing of our new '05 FWD Freestyle. It's all been from the info panel as I've not done an old-fashioned fill-up+odometer+calculator test yet. Anyway, we've been resetting as soon as we hit highway speeds to get an accurate feel of our real best-case mileage. So far we've tested it on 5 20+ mile legs of trips. All but one of those landed firmly in the 28-31mpg range. Round trips so far have averaged 29 when all legs are averaged together. (Woohoo!)

The one outlier was the leg of the trip in which we attempted to break that 31mpg record by driving 58-60 instead of 65. On that one we never broke out of 27 unless it was the wrong way down into the 26s. Of course we were going the other way then when we got 30 on the same road, but it still got me thinking...

With the CVT, some of the old fuel economy rules may be out the window. On my 5-speed for instance, going 55 instead of 65 moves me from 21mpg to 27! But on the Freestyle the CVT is constantly adjusting gear ratio so how do I find its sweet spot?

ETA: And I see I've put this in the wrong forum, though it is specifically about the CVT. Anyway, feel free to slap the noob.

HHR
Regular Member
Posts: 399
Joined: Sat Jan 15, 2011 11:08 pm

Re: Fuel economy sweet spot and the CVT

Post by HHR » Wed Jun 15, 2011 8:26 am

Wind has a big effect on the fuel economy. I can get 33 mpg going 60 with a 15 mph tailwind. If I turn around into the wind, I will get 25-27.

knowitall
Regular Member
Posts: 1148
Joined: Wed Mar 09, 2011 8:12 pm
Location: Texas

Re: Fuel economy sweet spot and the CVT

Post by knowitall » Wed Jun 15, 2011 8:49 am

Air the tire pressure to the maximum sidewall number to give you 2 to 3 mpg increase.

Your tires will last longer also.

BrettS
Regular Member
Posts: 110
Joined: Sun Jun 14, 2009 6:13 pm

Re: Fuel economy sweet spot and the CVT

Post by BrettS » Fri Jun 17, 2011 12:08 pm

As the others said, wind can have a big effect on economy as well as elevation... if your destination was at a higher elevation (even by a few hundred feet) than your origin it's quite possible to see a few MPG difference between the way out and the way back.

I'd do more testing at 55 before concluding that it's a bad spot for fuel economy.

tmad
Regular Member
Posts: 84
Joined: Sun May 18, 2008 11:44 pm
Location: Northwest Illinois

Re: Fuel economy sweet spot and the CVT

Post by tmad » Fri Jun 17, 2011 10:42 pm

Gave my 'Style a bath (wash) today and it responded with 31.5 mpg on the way home (57-58 mph on a 55mph limit road). Is it me or does a clean car get better mileage? :shock:
Grn/tan 2007 Freestyle SEL FWD

MrDinMN
Regular Member
Posts: 196
Joined: Mon May 15, 2006 3:32 pm

Re: Fuel economy sweet spot and the CVT

Post by MrDinMN » Sat Jun 18, 2011 2:44 pm

tmad wrote:Gave my 'Style a bath (wash) today and it responded with 31.5 mpg on the way home (57-58 mph on a 55mph limit road). Is it me or does a clean car get better mileage? :shock:
I've gotten 31.5 on a long 55 MPH stretch of road...

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