A vehicle tune-up is the maintenance operation of replacing the spark plugs, distributor points, inspecting or replacing the cap and rotor and possibly replacing the fuel and air filters. Also the adjustment to the point gap and ignition timing all to ensure the vehicle continues to perform well. As vehicle development and engineering develops with more advanced technologies, cars are made by robust and computed systems that removes the human error that causes the need for tune-ups. But that does not mean that routine tune-up isn’t important.

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https://www.spotdem.com/2019/09/08/vehicle-tune-up-what-it-means-and-importance/