NHTSA Complaint #11580997 — 2016 FORD FOCUS

On March 29 2024, vehicle had rough idle on start, problem remedied with restart. All fluids appeared to be within normal levels with coolant reservoir indicating just below half-full. On March 30 2024, vehicle idled rough on starting. Attempted restarts led to multiple stalls with failure to start after third attempt. Inspection of engine bay found coolant reservoir to be empty. Upon towing to dealership, service department denied NHTSA #23V905 as cause of failure, stating that the engine was showing coolant intrusion into cylinders and needed a full replacement at 57,771 miles. This is similar to NHTSA Complaint # 11570577. The engine showed no driver-visible warning indicators of imminent failure. This is a cause for concern as engine failure while driving will lead to loss of power steering and brake assist systems. These are safety critical systems and can cause an accident if rendered inoperable while in motion.