If original that's a long life. Some have reported getting 7-10 years from an OEM battery.
Hopefully you coded in the new battery using VCDS so you get long life out of it as well.

 

Yep, new battery coded with VCDS. Useful little tool!

 

A decent battery that's somewhat maintained should easily last 10 years. My 2015's lasted 9 years, but I have a 6-minute commute, and leave it sitting for 3-4 weeks every winter. My mother's B5 A4 battery lasted 14 years!

 

I recently bought a 2014 TDI Sport and brought it to my independent VW mechanic last Monday for a quick look. He siad all in all it was a solid vehicle and the only real issue was that the battery was almost toast. Not too bad of a report to get on my 11 year old Touareg.

I bought an OEM replacment battery from a local VW dealer and replaced it this afternoon. When I leaned the driver's seat back to get to the battery compartment I had a suspicion that the battery might be original. The condition of the carpet was pristine and all of the little connecting tabs to the carpet flap were still in place.

I pulled the old battery and I am 99.9% certain it was indeed the original battery to the vehicle, as 14/14 is stamped on the negative terminal. From what I understand about the German made car batteries is that it was built during the 14 week of 2014.

I have to say that I didn't think any car battery could last 11 years. I'm pretty amazed and if I can get half of that out of the new battery I will be happy. Anyway, just thought this was interesting.

I got 8 years on my 2017

 

Can you expand on that statement re coding, what's the downside when battery replaced at local mechanic, please.

You need to reset/reprogram the battery management system for proper charging and battery longevity. The system adjusts the charging profile based on capacity, age, resistance, current draw etc. it’s a very simple 30 second job.

 

Thanks mate