Vortex Generator Experiment
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Joined: Apr 2014
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ML 320 CDI
Vortex Generator Experiment
As you all know by now. Most SUV's have a large cross section vs Sedans. Our w164 is no exception. The main reason why milage suffer - SUVs displace more air. And the faster you go the more air is displaced. One of the most recent innovations I've noticed are "vortex generators" on the backs of semi-trucks. I wont be discussing how it works (you can google that). But i want to share the results of what I got in this video. At first I thought it looks ugly - thats why it took me a full month before i decided to install it. But now - i think its worth doing. If you decide to try this - please collect plenty of mpg logs before you try it. That will give you a better baseline.
Last edited by 20swrt; May 31, 2016 at 12:38 AM.
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From: Nova Scotia, Canada
2023 GLK250, 1987 560SL
In my opinion, the period of time and distance traveled isn't sufficient for a good analysis, unless the numbers are simply overwhelming, which they aren't. Wind speed alone can account for a 10% discrepancy - too many variables.
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Joined: Apr 2014
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ML 320 CDI
I agree with you Marc - there are a lot of factors to consider. I am posting this in the hope that folks might use this data as a baseline of comparison and hopefully they can also post what numbers they get (every fillup). In my case, this is a picture of my first fill-up after installing the vortex generator. This is a photo just before the amber light came on (going up my driveway). I consider this one of my highest milage for city/hwy. Please note 33mph is the average speed. 575mi reached. Photo shows 24.3 mpg - but in reality its more like 26.3 mpg.
Vincent, i dont have much pictures of install process. I just have a few which is included in the video.
Vincent, i dont have much pictures of install process. I just have a few which is included in the video.
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Joined: Mar 2014
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e320
just did some reading about the vortex generators, my internet was not loading your video this morning, i watched it just now
now i see what they are etc and will be interested in following your results with this
thanks for posting about it
now i see what they are etc and will be interested in following your results with this
thanks for posting about it
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Joined: Apr 2014
Posts: 105
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ML 320 CDI
IMO - i wish they sold Airtabs in small quantities rather than 80 pcs.
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