2017 Encore having one piston replaced. Can this result in future piston/engine problems. 8000. miles
I seriously doubt that anyone can answer that . All I can offer is to have all scheduled service done at the dealer for the remainder of your warranty . Keep a regular schedule on checking oil level ( at least once a week ) . At the end of warranty if you are still worried then trade or sell.
If this is warranty work and you are talking about an engine piston… Replacing one piston is something I would do to repair an engine. I am surprised a dealer would do that rather than replacing the entire engine or at least the “short block” or bottom of the engine with all new pistons.