The heater on my 2023 4.4 Autobiography is playing tricks on me.
Around town set on Auto at 22C and all is well .
Venture onto the motorway and slowly the cabin temp falls and have to increase to 25C to maintain heating .
Also the dash vents start to bleed very cold air. Tried shutting them down but you can still feel very cold air escaping.
Any thoughts on this

Oddly, mine does something similar (AB D350). Also the fans semi to be on high all the time. In the L405, there was a setting for Auto that set quiet / gentle fan etc.

Anybody else having anything similar?

I find I have to turn the heat level to 22/23 to get a comfortable cabin temperature and also find the temp can vary when on auto.

Mines also got a noisy fan which is being looked at this week along with the coolant heater replacement. Current fleet:
2020 McLaren 600LT Spider
2020 Mercedes C300 Cabriolet
2023 PHEV 440 SE
1992 Lotus Esprit turbo
2019 Alpine A110