Tune-ups are major services that include replacement of spark plugs, air filters and possibly a few other items and an oil change. Tune-ups are not a solution for all car issues, but rather preventative maintenance for your car's engine. In older cars, tune-ups were needed about every 30,000-45,000 miles. Nowadays, most newer drive for much longer without tune-up needs.
Traditional spark plugs have to be replaced every 30,000 to 50,000 miles. Platinum-tipped or Iridium spark plugs usually last for 50,000 to 120,000 miles.