2021 Super Great still good even starts aging up, no common problems except low power every 150000km. Low power issue may caused from fuel injectors starts to worn out, or plunger in high pressure pump starts wearing out. For solenoid inside X-Pulse injectors, very rare for cases of short circuit which causes injector opens slowly or fails to open, leads to abnormal idle speed. Also for twin cam valvetrain, to adjust clearances must at specified interval as written in owner's manual. For information about advanced maintenance, create video of engine overhaul including replacement of piston rings, valve seals, also fuel injector & feeder pipe seals. Thanks for detailed truck review, very appreciate it