Cobalt makes an excellent boat. I will guess that is the base engine. With boats more HP is always better. If you can afford a larger engine get it. If you think a smaller engine will save you fuel you are wrong. If that's a used boat and it's in good shape and you like it and the price is right I'd go ahead a get it with that engine. Unless you like to load your boat to it's maximum and still expect great hole shot.