in scotland which machines breaks the most? (compare maschio gaspardo, amazone, kuhn, horsch, kverneland,vaderstadt, lemken and similar)

That's too broad to answer usefully as posted. "Which breaks the most" across entire brand lineups (Maschio Gaspardo, Amazone, Kuhn, Horsch, Kverneland, Väderstad, Lemken) covers completely different machine types, drills, cultivators, ploughs, mounted vs trailed sprayers, each with different failure modes. Reliability also varies hugely by specific model, age, dealer support network, and how the machine is used (soil type, acreage, operator).

To give you something actually useful, tell me:

1. Which specific implement type you're comparing (seed drill, power harrow, plough, sprayer, etc.)
2. Which specific models, if you have them in mind (e.g. Väderstad Rapid vs Horsch Pronto vs Kverneland u-drill)
3. Whether you're asking about breakdown frequency in general use, or you're chasing a specific recurring failure on a machine you already own
4. Roughly what soil/ground conditions and annual acreage, since that drives wear rate more than brand in a lot of cases

If you're actually troubleshooting one machine that keeps breaking, give me the brand, model, and what's failing (which component, what symptom) and I'll dig into documented failure patterns and fixes for that specific machine rather than a broad brand guess.