This is the explanation that I provided last time on why Beko products may work better in the cold environment of a garage.
"If you Google best freezers for garage, you will find an article by Which? magazine that confirms this as a potential problem. It applies to all freezers and fridge freezers. The European std rating is an SN code that is designed to operate at temperatures down to 10 degrees. So a cold winter will breach this.
The article goes on to say that many people operate them no problem, and that the different refrigerant used by Beko (and by no other manufacturer) seems to enable it to operate at lower than designed temperatures."