There are 2 owner-reported fuel system complaints for the 2013 Chevrolet Sonicin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
GM PART NUMBER 95027313 OUTLET DUCT CONNECTING THE AIR BOX TO THE THROTTLE BODY HAS SHREDDED IN 30,000 MILES OF USE. THIS PROBLEM CAUSES THE ENGINE TO RUN LEAN (ODB2 ERROR CODE P0171) RESULTING IN SIGNIFICANTLY REDUCED FUEL ECONOMY, POOR ACCELERATION, ROUGH IDLE, AND POTENTIAL FAILURES TO A NUMBER OF COSTLY SENSORS AND COMPONENTS, AS WELL AS ALLOWING DIRTY, UN-FILTERED DIRECTLY INTO THE ENGINE. A QUICK GOOGLE SEARCH REVEALS 26,000 SEARCH RESULTS INCLUDING FORUMS AND MESSAGE BOARDS WHERE COUNTLESS SONIC OWNERS REPORT THE SAME ISSUE. THIS IS A WIDESPREAD PRODUCT DEFECT AND GM NEEDS TO PROVIDE A REPAIR SOLUTION FOR OWNERS OF THIS MODEL VEHICLE. THE PART HAD DETERIORATED TO THE POINT, WHERE THE CHECK ENGINE LIGHT ILLUMINATED. THE CONSUMER NOTICED THE FUEL ECONOMY OF THE VEHICLE DROPPING STEADILY FROM THE ADVERTISED 29/CITY/40 HIGHWAY TO AN AVERAGE OF ABOUT 25 MPG HIGHWAY.
TL* THE CONTACT OWNS A 2013 CHEVROLET SONIC. AFTER THE VEHICLE WAS FUELED, IT FAILED TO START. THE DEALER STATED THAT THE VEHICLE WAS OUT OF WARRANTY. THE VEHICLE WAS NOT REPAIRED. THE CONTACT REPLACED THE FUEL TOP, BUT THE ISSUE STILL PERSISTED. THE MANUFACTURER WAS NOT NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 10,000.
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.
Data synced from NHTSA on Apr 26, 2026