One problem related to emission control has been reported for the 2007 Audi A4. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Audi A4 based on all problems reported for the 2007 A4.
2007 Audi a-4 customer wants to know is there an exhaust gas/ engine problem leak that is causing him to become drowsy while driving. . Customer wants to know if they are test that can be done*.