My car was diagnose with ignition coil damage. Even after replace with new ignition coil, damage again. Further investigation, found out other parts also affected. GMR honored and replace the affected parts without me paying a single cent. Thanks Dennis Tang for following up my case. Even after replacement of part, they ensure no faulty only release the car. The authorized workshop that I went is MKT Sri Damansara. Thumbs up for the warranty service provided. I'm glad that I bought it. For those whom are looking for used continental car, I highly recommend to buy their warranty program for ease of mind!