One problem related to steering rack and pinion has been reported for the 2013 Audi A4. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2013 Audi A4 based on all problems reported for the 2013 A4.
Electric cooling pump defect that bled onto the power steering rack rendering the car inoperable - light came on and said do not drive defective steering. $3770 to replace both the rack and pinion and the cooling system. This was done in may. No refund has come through after several attempts. Recall says remedy not available yet - I need the money now.