Chase Saphire Reserve AVIS Car Agency Perk
Have a CSR CC and used Chase portal to apply for 'AVIS Preferred' Discount Status which allows 30% plus car upgrade where available.
'AVIS Preferred' status free car upgrade is NOT applicable when in Europe as you must be 'AVIS Preferred PLUS'.

After clicking 'AVIS Preferred' Offer on Chase portal I was redicted to AVIS web site and after completing information I was upgraded to 'AVIS Preferred PLUS' which means in Europe where available I might get a free car upgrade.

Since I have a corporate discount code applicable only for the US I get free vehicle insurance(CDW,LDW, Loss of Use) and car upgrade I was previously classified as 'AVIS Preferred'.

Now through Chase CSR you can be eligible for 'AVIS Preferred PLUS' status even though Chase web site says 'AVIS Preferred'.

Nice little perk Chase Card Member Services doesn't know about.