This is just a reminder that Craigslist is now cracking own on keyword spamming in ads.
In essence if you post a Hyundai Sonata and try to include keywords for other makes/models the ad is likely to be blocked. As was the case the past 2 days for this dealer (see attached image) as seen in the image below.
Overall this is a positive change for Craigslist. It will make the postings more relevant in search.
When a user searches for a specific make/model they will be more likely to see the types of cars they are looking for. Craigslist is definitely making an effort to be closer to Autotrader, Cars.com, etc on their offering.