Cars Q&A

If your objective is performance, then a spark plug change itself will amount very less on a new car and you will have to do a lot more. The best way to go racing is to buy a old car (FIAT Palio 1.6 GTX will be a top choice) and then tune it up. If this is not what you want, best to keep it going as it is, you must change all the 4 plugs once you cover 20Km or and at that a manufacture recomended make will be best, I had gone for NGK and it was quite ok. changing a plug for fuel efficiency now is a bad decision and you will not recover what you spend on the plug.