I looked at 4 05 z's at 4 dealerships. They all had a tear about 6 inches on the driver side.
I figured I could just tape it for now and get a new top in about a year.
I also used it as a negotiating tool.
10 months of owner ship and the tear grew to over a foot. I sewed it but two other rips appeared in the back a few months ago and continue to grow. Professional replacement $2000
The worst is the oil issue.
I have to either oil change every 1100 miles or add another 5 quarters to get by to 3000.
It appears oil is getting into two of the cylinders.
It destroyed two spark plugs. If you car blows out heavy smoke when you crank it don't buy. Nissan does not back up their products.
The car in and of itself is fun to drive, looks great, good sound system, sub-woofer behind seat feels like a massage.
Back up your products.
It is hard for a consumer to know if it has an oil problem.
You cannot find out the flaws by one test drive.
The problem is obviously not due to the used car dealership or owner.
The problem is the design and build.
Nissan should take responsibility.