AC cooling issue for Tjet

I have a Linea tjet 2016 . When compared to Punto the ac is not that effective. Is this a common issue? What is the solution?

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Have you seen this thread?
http://www.teamfiat.com/threads/fiat-linea-t-jet-a-c-issue.12430/

 

Yes I have. Found initial batches had cooling coil issue.

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This is one experience, so it doesn't seem to be a common problem. Having said that, there are multiple variable which can cause this difference in experience of cooling. Not limited to these.
By Design:
1. Linea's cabin bigger in volume than Punto.
2. Difference in ac compressor size in both cars. ( Petrol Tjet and 1.3 MJD)
3. Blower size and ducts.
Although Fiat should have considered this for sure.
By Manufacturing / Usage
1. Issue in one of the components of ac as compared to perfectly working A/c in Punto.
We need more details from you to be able to pin point a reason for the difference in cooling experience.