There are 2 owner-reported engine complaints for the 2014 Acura RLXin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
2014 Acura RLX Advance suffered an Engine Failure from internal bearing defect. The vehicle was meticulously maintained by Acura dealerships, and had extensive service records. While driving, the engine produced a knocking sound, then abruptly shook and died. The Engine has seized, and exactly has the same problem with Honda/Acura 3.5l V6s recalls. Diagnostics after Engine failure included inspecting Engine Turning over, Timing Belt (which was pristine) to rule out any other causes.
TL* THE CONTACT OWNS A 2014 ACURA RLX. THE CONTACT STATED WHILE DRIVING AT VARIOUS SPEEDS THERE WAS AN ABNORMAL KNOCKING SOUND COMING FROM THE ENGINE COMPARTMENT. THE VEHICLE WAS TAKEN TO (AUTONATION ACURA STEVENS CREEK 4747 STEVENS CREEK BLVD, SANTA CLARA, CA 95051) TO BE DIAGNOSED. THE CONTACT WAS INFORMED THAT THE TIMING BELT SHIM NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE CONTACT WAS INFORMED THAT THE WARRANTY WAS EXPIRED AND ALL REPAIRS WAS THE RESPONSIBILITY OF THE VEHICLE OWNER. THE APPROXIMATE FAILURE MILEAGE WAS 44,000.
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 May 4, 2026