One problem related to gas recirculation valve (egr valve) has been reported for the 2011 Audi A4. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Audi A4 based on all problems reported for the 2011 A4.
It appears that due to a manufacturing/engineering defect, the timing chain on certain Audi and Volkswagen models fails after a certain number of miles. This timing chain failure has been determined to cause substantial damage to the vehicle's engine, in many cases requiring a complete engine replacement. Regrettably, this is what recently happened with my 2011 Audi A4. In fact, there was a fairly high-profile class action filed against Volkswagen (civil action no. 16-2765 (jll)(jad) that was recently settled. (see https://timingchainlitigation. Com/home/faq#faq6). Unfortunately, the settlement is extremely flawed and leaves vehicle owners inadequately compensated if their vehicles are above a certain number of miles or if the owners missed the deadline for filing claims. The timing chain issue constitutes a significant and dangerous manufacturing/engineering flaw that should warrant a recall of all affected vehicles. The engine failure that can occur as a result of the timing chain issue can easily lead to auto accidents and possible fatalities. I urge the dept. Of transportation to take this matter very seriously and investigate. A full recall and compensation to affected vehicle owners should be ordered.