If you are using it everday for work then you really need to get it rustproofed thoroughly. Get some waxoyl or dinitrol into all the cavities,
sills and doors etc. Also underneath check the underseal is intact and not dried out. Its work spraying it with some diesel as this softens it up making it effective again. If you dont do this then rust will soon become a major issue. I know of someone who had a Bis new, and three years later it was scrapped due to extensive rusting. Personally, I wouldnt use a 126 everyday during winter... they do need lots of maintanance which is not nice in winter, and honestly would recommend something else for those months.