What is the average penis size for a sixteen year old and do maltese/europeans have larger ones as i am half maltese and told by family i should?

There is no: "average", as sizes vary greatly from one study to another. However, the mean of an erect human penis is approximately 12.9–15.0 cm (5.1–5.9 in) in length. Flaccid measurements are unreliable. Your heredity may have some effect, but is probably more wishful thinking and unsubstantiated bragging by your family and relatives. Be happy with what you've got, it's all you'll ever have.