My w203 is now 9 years old(owned from new) and has always been serviced at Mercedes, 40K on clock. I am only covering about 1500 miles per year now. The B service due is now showing on dash. The car drives great,auto box still very smooth on gear changes. The cost of B service is quite alot and I am aware mercedes may say the ATF and other things may need changing due to the mileage, which will bump costs up. With the car driving fine and the small mileage I am driving has anyone out there any advice on whether I should just get the basic B service done or spend alot more money for all the extras. Has anyone any experience(good or bad) of running automatic gearbox for more than 40K without automatic fluid change. Look forward to any advice.