There are 2 stored owner reports matching the engine leading-label group for the 2011 Audi Q7 in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 2 of 2 matching reports.
Open the full vehicle complaint log (all categories)THIS COMPLAINT PERTAINS TO AUDI'S ADBLUE (NOX) SYSTEM. THE NOX SENSOR FAILED, WHEN THE CAR IS DRIVING OR STATIONARY. THE WARNING ALERT STATES THE CAR WILL NOT START WITHIN 600 MILES. THE NOX SENSOR MUST BE REPLACE; OTHERWISE, THE CAR WILL NOT RUN DUE TO THE SOFTWARE LOCK OUT TRIGGERED BY THE SENSOR. I AM FORCED TO REPAIR THE CAR DESPITE THE FACT THE TDI ADBLUE SYSTEM NEVER WORKED PROPERLY AS ADVERTISED BY VW/AUDI. IN MY VIEW, VW/AUDI SHOULD REPLACE THE SENSOR OR VW/AUDI SHOULD OFFER A REIMBURSEMENT FOR ANY COST RELATED TO THE TDI ADBLUE SYSTEM THAT OCCURRED WHILE THE COURT CASE IS PENDING.
TL* THE CONTACT OWNS A 2011 AUDI Q7. WHILE DRIVING APPROXIMATELY 40 MPH, THE TEMPERATURE GAUGE SUDDENLY BEGAN TO FLUCTUATE FROM HIGH TO LOW AND THEN BACK TO NORMAL. THE VEHICLE DECELERATED AND STALLED. THE VEHICLE WAS TOWED TO THE DEALER WHO DIAGNOSED THAT THE ENGINE WAS FAULTY AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED AND THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 90,700.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Aug 31, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.