I had only one issue with my XPS 13 9350 so far - at one point the battery died and I had to send it in. It got replaced quickly and since then it's been fine.
Apple on the other hand will disable your computer if they detect that an unauthorized 3rd party has serviced it (if you bought a recent one with a T2 chip).
One thing I love about the Dell vs the Macbook I had previously is that I can just download a service manual from https://www.dell.com/support/manuals/de/de/debsdt1/xps-13-93... if I want to service it myself.
Apple on the other hand will disable your computer if they detect that an unauthorized 3rd party has serviced it (if you bought a recent one with a T2 chip).