They usually make trouble.
Large ones as big as a baseball or a small car, will leave pits about as big as they are. They may shatter into fragments upon hitting the ground, and the fragments may get scattered over many thousands of square feet. Very large bodies may leave craters hundreds of yards cross. There may, or may not, be large chunks left over depending on the composition of the meteor. For the Arizona Crater, only small fragments of a large body perhaps a hundred yards across, is all that survives. The impact energy can be high enough to cause fires due to the frictional energy shed by the body. Most of the energy gets dissipated as bulk kinetic energy which just means that the impact can propel lots of ground into the air which rains down upon the surroundings in a thick blanket of heated, even molten, rock. This requires truly spectacular impacts of kilometer-sized bodies.