E3 Spark Plugs E3.62 Automotive, Truck, Van and SUV OEM replacement Spark Plug

I put these plugs in a 2003 Malibu LS and it runs great. Prior it had hesitation and gas mileage was ok, but the E3's have smoothed out the acceleration and I'm not stepping on the pedal to get up to speed. This adds up to improved gas mileage.

I've since purchased another set for my Blazer and waiting for them to arrive so I can put them in.

I replaced the original plugs in a car with 100,000 miles. The car does seem to have a bit more power and has better pickup at low rpm with a manual transmission. It clearly gets better mileage than it ever has, estimated at about 5% to 10% improvement which is very worthwhile. They also cost about the same as the OEM replacement, so there is no real downside to these plugs. The package says they will last 100,000 miles, but that is unknown for a while. My 4 cyl. engine was very easy to install, however many 6 cyl. and 8 cyl. engines are very difficult and time consuming to install. If you can do it yourself this is very worthwile, however it may not make sense to have a mechanic replace the plugs unless they are due anyway. These plugs work as advertised and it seems odd that new cars do not come with plugs like these.

This is a 2000 Chevy S10 2.2 liter auto trans running on E85 that the E3 spark plugs went into. With the old spark plugs, driving 55 mph commuting daily to work 35 miles round trip the S10 was getting 19.7 mpg. With the E3 spark plugs the S10 is getting 21.8 mpg. It feels like there is slightly more power available. For so little money invested in these spark plugs I can't think of anything else you can do to get such big returns in gas savings

I installed these spark plugs along with new wires and a K&N Air filter to try to get better gas milage out of my 99 Silverado with a 4.8 V8.
I noticed the truck had more power but gas milage was around 15.5 MPG and now getting 16 MPG. Not as much as I hoped for but if I were to do it over I would still purchased these plugs.