Reviewed By Douglas B (MECHANICSVILLE, VA) Reviewed for a 2015 Toyota Prius —3/24/2018 6:57 AM
Noticed it does help a little with the gas mileage and merging while going down the highway. Hasn't been on a car long enough to get a accurate measure for the mpg wish it was tucked up underneath the car more. hangs down a little too much. I do have the car Lowered, that help hide the exhaust. Have factory ground effects, I haven't put it on yet so I don't know if there's Clearance issues yet. Does make the car a hair louder, but will probably never noticed unless you listen for it.