John We had a test drive in an Msport X1 (no xline available to test) and liked the sports seats (the test had the alcantara option) . My wife commented that they supported her back better. I found they held me in firmly as I threw the car around corners ;-)….all in the name of testing! Both my wife and I are not that tall/big so the seats are a good fit. If they are anything like my dad’s 330e seats then we can’t wait for the car.
Same experience as you AlanBang (see above). Sorry to disappoint you, but the Sport Seats in the X1 are not the same as the Sport Seats in the new 3 Series. Those in the 3 series are bigger, less hard and far more comfortable than those in the X1.