Big problem to skip a service? Ask the experts.

I bought a 2 year old car 1 year ago. Since the car is not the bank but mine, it is also open to me what I do with it. The last service was made at 25,000 kilometers. Now soon the 50,000 kilometers are reached and I should do the next service. Since I see the car as a utility object and am not willing to put in a lot of money, I thought about leaving out the service and making the next one only in one year at about 70,000 kilometers. Is it a problrm if you leave out a larger service or a car has to be able to handle it? What I totally forgot: With my car is soon the inspection of the pickerl, in Germany called TÜV. So it is not completely meaningless to do the service now, if the Tüv/Pickerl is checked everything? Then I throw out 2x money to the window. Have the foot only for 2 years. So I don’t have so much idea and hope on your understanding.