Skoda Octavia l&k 2005 diesel consumption high

Hi!

I recently noticed that with the engine warm my instant fuel consumption on idle shows 1.2 l/h, while the Octavia with the same engine hade only 0.7 l/h. AC admittedly on,

What kind of readings are the rest of you getting? I am wondering if I should take the car to the dealer if this is unusually high.

Edit: after turning the AC off I got a reading of 0.8 l/h with more or less cold engine, so it seems to be OK after alll