49 ...
Bought my first Z a 1987 300ZX N/A brand new at 24 and had her up until this year when I gave her to my son as his graduation present ... she had 228,000 K and ran like a top and I hope he can keep her up
Got the 370Z a couple months ago and have been VERY pleased so far
I also ride a 09 Yamaha R1 and do track days with it