After about 4 months of having it, the head blew, and was very expensive. It was kind of my fault that it got that bad, but the water pump went out first which is what eventually led to the head going too.
After that, there were really no problems, except I did have to replace the calipers and strut bar (was making a really bad noise when it went over bumps and things).
I still love it though, and consider it very reliable.
My 240sx is very sporty and classy looking. It has been compared to a Lexus, and a lot of people comment on how great it looks. It is definitely one of my very favorite cars.
With a little more added under the hood (and a little more to the body, it does need a paint job. The clear coat is "bubbling" more and more every day, I swear), it would be an even hotter car, and I recommend it to anyone. Great car!!
I have had 4 s14's and 2 sc300's 5 spds. I have a love for the 240 but it is not in the same level as a lexus!! However for the money is a great car that people should consider.