The Cadillac XT4 Sport is a compact crossover positioned against Audi Q3, BMW X1, and Mercedes GLB. All of them are entry level premium vehicles. The American competes better than you might imagine, it just depends on what you want out of your vehicle. Tom Voelk checks out a loaded AWD Sport model with self-parking (which works pretty darn well). There is that as-tested price of $58K though…