NHTSA Complaint #11460488 — 2014 BUICK REGAL

2014 Buick Regal GS AWD sedan, second owner. Car was purchased as a certified used from Buick dealer in 2018 with 40,xxx miles. Car now has 137,xxx miles, no longer under extended warranty. Have had all regular maintenance done and have records. Aside from normal wear and tear, no prior issues with car. Car engine suddenly started to run rough, Check Engine light came on while driving 65 mph, sudden loss of engine power and car died on the highway causing congestion and vehicles to swerve on highway, loss of steering control, pulled over. Car was able to be restarted but running rough, engine light on, severe reduction in power. Talked with nearest dealer, they said to not drive car. Had local GM mechanic do inspection, computer codes indicated loss of compression on cylinder 3, misfire. Compression check and bore inspection indicated loss of compression on cylinder 3, valve failure/damage, oil in the turbo, requiring complete rebuild or replacement engine and turbo. Review of TSB from GM indicated this is a known issue, engine to be replaced.