Got an 09 G37 with 225k on the clock. Zero repairs done in its life other than tires, oil changes, and brakes. Literally nothing else. Family member who owned drove this thing like it was a Prius its entire life. Bet its gone over 5k rpms on accident maybe twice lol. Not exaggerating how this thing was driven and cared for. Anyways look like it needs some front end work and a valve cover gasket. Maybe I can run it north of 300. What’s the highest mileage seen on these?

 

Welcome!

The sky is the limit. The main issue with these cars is the galley gasket and I assume at your mileage it could become a problem soon. But once you upgrade the gasket, do a few things while you're in there (timing components, water pump, etc.) the car will be virtually indestructible. If you are from the North, the salt will kill the car sooner than later.