With my car the HU was due recently and I had it made in order to save time, at the workshop closest for me, ATU. I then got a call, that the badge was not given because of a broken front axle spring and one must now exchange both front axle springs, “naturally” thus also the shock absorbers and “naturally” afterwards carry out an axle measurement. 1100 Euro. That seemed strange to me, because a fast research has shown that a spring onlin e is already available for 20 Euro (with shipping) and according to my knowledge from the technical mechanics and some years as an engineer in the car industry purely technically a complete exchange of the spring legs is by no means necessary if only one spring is defective. Likewise, however, my research has revealed that in the meantime it is clearly often argued that at least “forceful” both springs of one axle are to be exchanged and the follow-up measures as with me from ATU vo Because I didn’t want to wait forever I relied on my own knowledge and changed the spring myself. So 20 Euro material costs and 4 hours of working time – lack of routine and with the simplest tool of course I took longer than the workshop, where this should take at most a quarter of an hour for a single spring. Nevertheless, it was financially enormously worthwhile, because also as an experienced engineer I am very white I then measured the track with home appliances, so ok. Straight-out run and other driving behaviour also perfectly. I had the HU follow-up carried out directly at the TÜV and also confessed to them that I only changed one spring. The badge was issued unreservedly. But now I am very curious if the majority of my fellow human beings actually find it normal, with a simple routine repair of a bil Some wear parts, like the spring here, to get a repair service that costs about half an average net monthly salary. And do you really let this be known with the pairwise exchange of springs + shock absorbers + axle measurement? Or was my mistake simply to go to ATU – they have a very mixed reputation?