Car Fuel Saver Auto Save 10-30% on Gas Economizer,Energy Economy Gas Saver,Plug and Play Portable Car Fuel Saver for Car Trucks,Fuel Shark for Car Vehicles Black Compact (2 Pcs)

Works great takes a couple of days before you see it start to work. It does work. I have a 2023 Ridgeline I am getting 24 miles to the gallon

I have been using it for weeks and no noticeable difference in gas saving and I made it got gas at the same price each time on fill up and even checked levels of the gas I put in was within a penny of each fill up...

Que realmente funciona, ya había tenido uno y se descompuso años despues y cuando lo usaba notaba un real ahorro de combustible , recien volví a comprar estos y decididamente si ahorran.

This device does not seem to have ANY effect on gas mileage.I just drove 650 miles and the mileage was less than usual. It is too late to return it or I would get rid of it.

Bien

It doesn’t work at all

Simple to use feel it s working once put in car charger

This was false advertising