Audi A4 B9 Probleme 2.0 TDI refers to a series of issues and problems that have been reported by owners of the Audi A4 B9, a mid-size luxury sedan produced by Audi from 2015 to 2020, equipped with a 2.0 liter turbocharged diesel engine (TDI). These problems can range from minor inconveniences to major mechanical failures, and can affect various components of the vehicle, including the engine, transmission, electrical system, and suspension. By understanding the potential issues associated with the Audi A4 B9 2.0 TDI, owners and prospective buyers can make informed decisions about the vehicle's purchase, maintenance, and repair.