Was about to buy a x100d without test drive. Was going to trade my fully loaded 2017q7. Decoded I should test drive first. Had done it a while ago so I had not cared but decided to test drive before purchase. Everything was fine but the seat was just awful. The side bolster is not adjustable. Was very uncomfortable. Got home never had this kind of back pain in my life and I am a chiropractor. I even tweeted Elon to make adjustable bolster so we can have comfort seats.