Question: how much bigger is the bmw x5 than the x3?
Answer: Size: BMW X3 is a compact crossover, while the BMW X5 is a midsize model. Seating: Both models seat up to 5 standard, but the X5 can seat up to 7 with an optional 3rd row. Cargo Space: The X3 gets 62.7 cubic feet of cargo space with the rear seats up, while the X5 gets up to 72.3 cubic feet of cargo space.