Writing an advert for a car.

[-westy-]

The main thing I'd say is that someone reading your advert already wants an MX5. You don't need to tell them why she should buy an MX5 over a TT, and you don't need to tell them all the standard features of an MX5 of that generation.

You need to tell them why to buy your MX5 over someone elses.

This man speaks truth. Mk1 Mx5s are mostly enthusiast owned now, especially supercharged ones, so you really need to sell it to that market - for all intents and purposes, thats who's going to be looking at the ad. I suspect you'll have more luck advertising on forums like Nutz or Miata.net.