The seller is obliged to warrant flawlessness. Thus, warranty describes the liability for product and legal faults, regardless of culpability, which already exist at the time of delivery
If such a deficiency becomes obvious within the first 6 months, the basic assumption is that the fault already existed at the time of delivery and can be objected. After that, this assumption is no longer valid and it must be proven that the default already existed at time of delivery. Warranty claims generally expire after 2 years after delivery. For immovable property, the deadline is 3 years.
The guarantee on the other hand is a voluntary commitment that a product resp. a work maintains the agreed characteristics (e.g. functioning, little wear and tear etc.) for a certain time. The guarantee can also be connected to conditions and requirements. Generally, a guarantee is limited. The moment when the possible deficiency occurs is irrelevant in the guarantee. Upon the customer´s request, guarantees must be submitted in paper form or on a lasting digital data carrier. They must contain the reference that additional guarantees are ensured, which exceed the legal warranty and these must be described in detail. Guarantees must contain more rights for the consumer than the legal warranty already includes.