Buyers search a model and a budget. That combination is the entire market, and a dealership whose individual stock pages are indexed appears for hundreds of phrases nobody could plan in advance.
Body style and transmission are underestimated searches. An automatic estate, a seven-seater, something with a tow bar: these are how families actually shop, and very few dealers write for them.
Part-exchange is its own intention. Somebody valuing their current car is at the start of buying the next one, and answering that question first puts the dealership in the conversation early.
Stock pages have to appear and disappear cleanly. A sold car left indexed generates the worst kind of visit, and a page that vanishes without redirecting wastes whatever it had earned.