Please update your profile with what you are driving as it will help other forum members who don't know your car with their advice. It could be a fuel pump or filter problem on either gas or diesel vehicles, or possibly a turbo problem on the diesel. Depending on mileage the throttle body could be getting dirty. If I had that problem on a gasoline engine and no other indications I'd throw a can of a product called "Seafoam" in the tank, drive the whole tank down and see if it clears it up. It might have thrown a code but with no instrument panel indications maybe not. Good Luck.
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