Hello, I’m not so long a smart owner, since March I drive a 4.5 year old fortwo (each at 35,000km) and love it very much… I’ve now let myself be persuaded to a review (free smart workshop), also because it’s oil change, winter tires have to be on it and at all, I know so far only that he drives well and was groomed by the previous owner (now with the maintenance indicator at -77 days). The friendly fitter told me now that the spark plugs should be changed every year with the smart (costs 83€ extra), that he would definitely recommend to me. As an old Ossi woman this is quite suspicious – new spark plugs without reason? How are your experiences? Does this have to be or is the money tailoring?