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post #1 of 70 (permalink) Old 03-27-2013, 09:30 AM Thread Starter
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MPG Sport Mode vs Eco Mode

Has anyone compared the MPG in sport mode vs eco mode? I really like how the car drives in sport mode but was wondering if the gas mileage was alot worse driving in sport mode all the time vs eco mode.
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post #2 of 70 (permalink) Old 03-27-2013, 09:48 AM
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Originally Posted by mtanberg View Post
Has anyone compared the MPG in sport mode vs eco mode? I really like how the car drives in sport mode but was wondering if the gas mileage was alot worse driving in sport mode all the time vs eco mode.
I would like to know this also..........
I would suspect the way a person drives and how much city vs highway mileage one encounters would make a big difference if it's worth the sacrifice to run in Eco mode.

Sport mode is so much more fun to drive.

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post #3 of 70 (permalink) Old 03-27-2013, 11:34 AM
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I will be taking a trip next month about 4 hours and will test it in ECO one way and Sport on the way home. Will post results if no one has tried it yet. We travel in normal mode mostly but I am also curious.

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post #4 of 70 (permalink) Old 03-27-2013, 12:05 PM
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Originally Posted by molina67 View Post
I will be taking a trip next month about 4 hours and will test it in ECO one way and Sport on the way home. Will post results if no one has tried it yet. We travel in normal mode mostly but I am also curious.
I would think there would be virtually no difference between ECO and SPORT modes in sustained highway driving. If you're cruising at 65-70 in overdrive, it should be the same.

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post #5 of 70 (permalink) Old 03-27-2013, 12:26 PM
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I would think there would be virtually no difference between ECO and SPORT modes in sustained highway driving. If you're cruising at 65-70 in overdrive, it should be the same.
There may be a difference if climate control is being used. In ECO mode, the output (and draw) of the AC compressor is significantly reduced. It will be interesting to see molina67's test results.

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post #6 of 70 (permalink) Old 03-27-2013, 12:49 PM
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I suspect the biggest gains with Eco mode will be in city driving........

btw - when it's darn hot out I will pay.......I need comfort not a system tapering off the AC to save a little MPG.
Most modern systems cycle the compressor anyway......not sure how much more this system would save.

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post #7 of 70 (permalink) Old 03-27-2013, 03:04 PM
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Not scientific but here is what I have observed in my 4 weeks of a 42 mile one way daily commute on combination of twisty rural roads and straight highway:

Normal mode...... 27.5 mpg

Sport mode....... 26.5 mpg

Have not tried the pure eco mode. I see that as an option only for straight, flat cruising.

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post #8 of 70 (permalink) Old 03-27-2013, 03:48 PM
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Originally Posted by JuneBug View Post
I would think there would be virtually no difference between ECO and SPORT modes in sustained highway driving. If you're cruising at 65-70 in overdrive, it should be the same.
I've read that sport mode engages the AWD continuously wtih a minimum of 10% of torque being sent to rear wheels all the time. If that is true then sport mode will impact your mpgs regardless of the type of driving
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post #9 of 70 (permalink) Old 03-29-2013, 03:24 PM
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I first thought regular/ sport/ eco modes were kind of a gimmick, and eco mode would only help lead footed drivers. I've been using eco mode on my drive to work. Since I hit about 12 red lights on the way, there is no need to drive fast, and found regular and eco weren't that different. I drove to a ski area yesterday and put it in sport mode; on the way back I switched it to eco and it felt like I dropped a cylinder and handling was way worse. When you need it, sport mode is a huge driving improvement. Also, I (almost) got stuck behind a stopped bus this week. There was a small opening in the next lane. When I gunned it in eco mode, there was almost a 2 sec lag before the power kicked in. I think its great to save gas, but be aware there may not be enough power to get you out of a bad situation in eco mode. (To the above post...) my understanding is that in sport mode, 10% of the power is sent to the rear when starting from a dead stop, and when cornering, not all the time.
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post #10 of 70 (permalink) Old 03-29-2013, 03:36 PM
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When I test drove an LE, it was in Eco Mode from the previous driver. I didn't know. When I left the parking lot to accelerate onto a major road, I though likewise; it was missing a cylinder. It was smooth enough, but I had to press half way to the floor with the accelerator before the RAV moved past a crawl. To say it shocked the shiite out of me would be an understatement, especially after driving my 4.3 V6 to the dealership. I quickly realized the problem, as I had read about the different driving modes. What surprised me was the fact that I had also read that after the engine is shut off, any mode reverts back to Normal. Such was NOT the case in the LE I drove.

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