I like it comes with a wider electrode to burn more efficiently the gas.

Gas-Saving: unknown, no tools to test that accurately

Complete junkI wish I never ordered theseStarted to get horrible gas mileage and then started missing firing .will post pictures of the spark plugs

I purchased the E3 spark plugs falling for their amazing gas savings and other miracles they proclaim

However, running really crappy gas will make any vehicle/plug run poorly.

I drive 50 miles one way to work each day, so far it looks like there is better gas mileage, I will drive it for a couple of tanks of gas to make that determination.

Noticed increased horse power no rough idle and better gas mileage.

I can tell stronger smoother power and better gas mileage

I had run on these plugs now for about 5,000 miles and they give my car very smooth acceration and good gas mileage

A little more power and a little better gas mileage

Amazing gas mileage

Great performance and gas saving will buy ahain

Cant wait to see if I get better gas mileage

Had to return the product and get NGK g-powers which worked awesomely in my car