Volkswagen Passat B7 Problems | Weaknesses of the Used Volkswagen Passat B7

Should you buy a used Volkswagen Passat B7? Pros and cons, maintenance costs and common problems of the Volkswagen Passat B7.
Transmission problems: 6-Speed manual, 6-speed auto and a DSG transmission were installed on B7 Passat
Engine reliability: 1.4, 1.8 and 2.0 TSI turbocharged gas engines, a non-turbo 3.6 V6 and 1.6 and 2.0 diesel engines