Engine temperature only at 70-80°C. Thermostat or temperature sensor?

On my Audi A3 the temperature display only shows 70-80°C. In summer, very rarely even 85°C. I asked two garages. One was told it could be the thermostat. The other asked me if the ventilation was warm (it is warm), and then suggested it could be the temperature sensors. They also said that with a…

Cause of cold start problems with the 1.6 TDI CAYE?

My 1.6 TDI is currently starting very poorly. The outside temperature is around 5 degrees Celsius. The engine has about 180,000 km on the clock. It starts right away after preheating without any long chugging, but after about a second, it begins to stutter loudly. It refuses to respond to the accelerator at all and…

Does the VW Passat R-Line 240 PS TDI (BiTDI) BMT DSG 4 Motion cause problems?

Hello everyone. I'm considering buying the VW Passat mentioned in the title. However, I've often heard that the 2.0 BiTDI is a bit problematic. Do you have any experience with this? Would a 2.0 TDI with 190 hp be better and therefore more robust? Is 175,000 kilometers already quite a lot for the 2.0 BiTDI…