Audi A6 owners have reported 2 problems related to emission control (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Audi A6 based on all problems reported for the A6.
Ran obd reader myself and at mechanic and found the following; p0456 evap emission control system (very small leak) | leak detected and p190f00 coolant pump for charge pressure cooler | electrical malfunction in load circuit. Mechanic informed that the vehicle needs a software update regarding the p0456 code as no leak was found. Also that only Audi performs this update. Regarding the p190f00 code informed me that there are several recalls regarding this issue as it has been causing some severe symptoms such as engine shaking, loss of power, squealing, whining noise near or at timing belt area at start up, delayed reaction at acceleration ( takes a while to reach desired speeds), temp gauge lowering despite warm up, warming of vehicle taking longer, unable to drive over 30-40mph and rpm won't go above 2000-2500 rpms. Acceleration is not as responsive as it should be.
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all problems of the 2012 Audi A6
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Vehicle lost all power under normal driving on level road. About the 8th time in the past 6 months. Initially corrected by replacing the oxygen sensors which caused engine to run "lean". Unknown cause of current problem. Big safety issue if power is lost while attempting to enter traffic or highway or loss of power during travel on highway. Engine does not stall, rpms drop when accelerator is depressed and returns to "idle" rpms when releasing accelerator. Constant "check engine light".
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all problems of the 1996 Audi A6
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