I bought a Nissan sunny 16sr in 95 and fell in love with the car. It eventually didn't fit the job so I bought a van and kept it. It sat for 7 years outside unstarted. I eventually had to move it or scrap it under duress, so I decided to find it storage space. It took me 10 minutes to unsieze the brakes, and £3 petrol and she started in 5mins with a jump and it drove. Question is, is it still worth restoring as it is mechanically sound and has very little rust, which are both surprising. 

I would definitely restore it if there is no corrosion and it seems to be mechanically sound.

It will only go up in value over the years and would be a great car to drive around occasionally and take to shows in the future