Hagerty had good things to say about the Miata just lately. You made a better score than I initially thought
1990–98 Mazda MX-5 Miata (+48.4%)(valuation increase)
Average value in #3 (Good) condition: $6100
The first-generation (aka “NA”) Miata made a huge splash when Mazda brought it out in 1989. The cheap roadster had been dead for about a decade, but the Miata revived it and has owned that market ever since. On balance, it’s been just about the best sports car for your money for almost 30 years. But because “Miata is always the answer” and because they’re cheap, a lot of them have been raced, modded, or just generally beat on. This means that nice, collector-grade examples are increasingly rare, and 2018 showed that the charm of those adorable pop-up headlights and smiley grille are in high demand.