So my G37 has over 15,000 mileage now(about 15,500 now), and I was expecting a maintence light to come on but it hasn't. How do I know if my car needs an oil change or tuneup or not? I bought my car used at about 12,200 mileage so I've only driven 3k so far...any help would be appreciated.

 

It's usually set to come up every 3,750 miles. You will only need a oil change. Won't have to change your brake pads until you hit around 20k depending on braking habit. A major service isn't due until 30k.

 

There isn't a light to tell you that you heed a certain service. Look in the service and maintenance guide that may be with your owners manual. If it's not there you can get one from the dealership.

Welcome to the forum.