Car's'r like guns. You gotta buy a new one once in awhile.
I know and I plan to replace this one next year.
It's the biggest POS I've ever seen. I bought it nearly 3 years ago with only 79k miles on the odometer. It looked fine physically, ran well, and had the service records. The spark plugs indicated no obvious combustion chamber problems (nor did the ones I changed a couple months ago). It was a single owner car. I paid cash and was on my way.
Since then, the radiator has failed, the water pump is leaking, it's leaking oil from the front main seal, the AC condensor spontaneously sprung a leak right as the weather turned cool this year (thankfully!), the cat's O2 bung has rusted out, and the airbag sensor failed (I fixed that by pulling the airbag fuse and removing the idiot light's bulb).
The car still has fewer than 100k miles.
I'll never own another Nissan. I'm sticking with Toyota from now on. Of the two I've had so far, both have been reliable and tough.
Chris