Just as I passed the 86,000km mark, I saw something I never thought I'd see: A check engine light. This was common in my old Pontiac, which is why I own a code reader, but I never expected it this early. I contacted Nissan, and it turns out that I'm out of warranty for check engine lights; it's pretty pathetic at 3 years, 60,000km.
Lucky for me, it's an easy thing to fix, and a blast of WD-40 seems to have done the trick. If not, they're only around $40 refurbished from overseas.
Photos and text in my blog here: http://mymicra.com/?p=550