I am sold. Thanks, everyone for your valuable thoughts. I think I will buy Weathertech mud flaps before winter.
I did a 500 mile roadtrip over the weekend and I got a 20.5 mpg mileage for the trip with the Weathertech mudflaps on. 20.5 mpg sounds less from what Subaru advertises. Could the mudflaps reduce the mileage from the advertised highway mileage of 26 to 20.5 ? Have you experienced any reduction in mileage at all?Had the Subaru flaps on my 2019 Ascent Limited and have the Weathertechs on my 2020 Ascent Limited and much prefer the WeatherTechs. They are longer, wider and easier to install. They also deflect debris better because if the size.