Will your omega be “correctly warm” at these outside temperatures?

Hello, the temperatures are currently very low in Germany, so I am all the more interested in the fact that the Omega heats up (drive an Omega-B EZ 9/95 special model “Reflection” with automatic climate control), but not so warm that you can take off the jacket, for example. The automatic climate control was maintained at the FOH in the summer, and the cooling capacity in the Omega-B is certainly not “eye height” compared to the facelift or the Vectra-C, but rather a little weaker, but the current heating power is very low. I am very surprised – even though the temperatures are now much below zero degrees. When I drove my wife’s Corsa-B (EZ 9/96) without air conditioning, he has heated so much that I meant it would be a sauna, my omega currently can’t get to the heating power. Is there possibly a defect on my omega, or how are your experiences up to now? Thank you JD