Fuel injector had to be replaced (under extended warranty) at 85000 miles.
Love this car. For $15000 to get a car of this quality and luxury was a dream for me. The car performs flawlessly so far. Very quick, and very comfortable. I bought it used, it was a lease return, from an Infinity dealer, and they have treated me great since then. My only complaint is that the gas mileage around town is only about 18. On the highway though it jumps to 28, so I love to travel in this car.
I have had my 1994 Infinity J30t for about 3 years. Currently there is about 225,000 k on the car. It looks and runs like new. The only thing that I have had to do above regular maintenance, was replace a lot of parts when the timing belt was replaced last year. The total bill was aboput $1500.00.
My j30 has 324k miles ORIG. TRANSMISSION! it's a 1995 and its just as powerful quick and responsive today as it ever was. Infiniti is the perfect word to describe the longevitiy of these engines.