Does the type of spark plug matter?

Stick with the plugs that the car was designed for! Trust me, I'm a mechanic and fancy gadgets really don't help....and cause more problems then they fix

Platinum spark plugs are already pretty good. Changing the spark plus will most likely not change much of anything.

The argument for more electrodes is more sparks or "better" spark than the single electrode. Platinum plugs are less likely to corrode and tarnish than standard plugs. This is why tune ups were so crucial 15 years ago. New spark plugs actually made a difference because tarnished plugs have colder sparks.

Poor spark leads to incomplete combustion, which leaves some fuel not burned. This reduces the horsepower produced by the engine but does not change the fuel consumption. Improving this with better spark actually improves power and fuel efficiency. Will it improve your fuel efficiency? Probably not. If your plugs are properly gaped, and your check engine light isn't on, and your car doesn't stall, your plugs are working great.

Here is the test. If you are mechanically inclined, just pull the spark plug and learn what a worn out plug looks like. I don't particularly recommend excessive removal of spark plugs because eventually your will cross thread one and be in for a $500 repair or you crack an insulator and then have to replace the plug.

Any improvement wouldn't be all that noticiable.... perhaps also a slight improvement in power..... but the Splitfires & Bosch plugs, providing you get the correct ones (and don't "mix & match" the 2 different brands) for your car should be better products anyway since standard parts cars come from the factory with are usually a compromise between performance & keeping the costs down.

Dont mess with success. Your originasl plugs worked fine with your engine all these years. If you overspend and try new gimmicks to increase mileage just for what? More gas mileage? Dont think you will get more than you already have. More performance? Dont think so! Keep with what works in the car. If you get an increase in mileage, dont expect 40mpg. More like 33.6 for an average instead of 33.5

If the plugs are for the motor in your car, it doesnt matter if they are standard or platinum. Standard and platinum whether it came with platinum or not are just grades of plugs. Platinum (and Iridium) plugs are made from more corrosion resistant metals and therefore last longer (and cost more). You can put standard plugs in a car originally equipped with platinums as long as they are the proper plug.

The only thing the fancy plugs help is the bottom line for the company that makes them. I have seen those split type plugs cause cars to run worse!!Stick with the plugs the car was designed for!

Looks like everyone agrees, Stick with the ones the Manufacturer put in it. On a suzuki probably NGK or Nippendenso.

Hard to say, although it certainly wouldn't hurt. Any increase you might experience would be marginal though. Be sure you bought the correct plug for your vehicle. There are many different ones with many different lengths and heat ranges.

through many years in the auto industry, i would highly recommend which ever plug the vehicle was born with. no one can make a better plug for that vehicle because if the could, they would have gotten the contract for it to start with.

I'm not knocking the split fire plug there great but not for your car, burns too hot and will cause additional trouble and expense...