I like VW’s and never had issues working on them. Even the MK3 Golf i drove had over 180k miles on it with no issues, granted this was the robust 2.0ABA with the 02A transmission.
VW transmission issues are mainly some of there automatics.
All the service information i have ever needed for VW i have found Alldata to be the most helpful.
But there is always going to be manufacturers that have issues with there products. I can name 3 brands right now that include domestic and import than have a particular transmission that has its faults.
To the original poster, i would look to see what transmission is in that vehicle and do your research.