I was driving past the local garbage dump when I remembered that I always wanted to weigh my car. Pulled up on the scales, they asked what I could possibly need to drop off in such a small car so I said I just wanted to weight my car lol. Not sure how much they liked that but I got my car's weight finally.
After factoring out my weight I got 2250 lbs in an NB1, with no a/c, but a rollbar, and removed spare tire and all extra stuff in the trunk. I had a 1/4 tank of gas at the time.
How much does your Miata weigh? If you don't know, go out an weigh it! I plan to do the same with my NA whenever I actually get it on the road again.