NHTSA Complaint #11548832 — 2017 FORD MUSTANG

June 2022, approx. 53000 miles, misfire codes. Replaced spark plugs. Codes continued intermittently. January 2023 car was inspected due to heater inop at 61228 miles. Coolant low and misfires. No repairs, just coolant added. I topped off coolant 3X until April of 2023 at 61631 miles, white smoke and damp smell from exhaust along with continuing misfires. Dealer stated water intrusion, engine and turbo bad. No warranty, less than 50% of cost covered by manufacturer. June 2023 car was returned to me. Back at dealer 4 days later, 61691 miles, rear end shudder. Bad rear differential. Manufacturer covered less than 50% of cost. All maintenance was performed at or earlier than warranty required including rear differential service at 33283 miles with Ford.