Used cars classifieds scraping
If you want a complete and accurate database of cars sold in your country, used cars listings are NOT a good place to source data from, because they are variable data, every day new cars are posted for sale while others become inactive, many car models are duplicated and some car models are missing because none is on sale today.
But if you want to analyze most popular car models, their average price, age, mileage, etc, or training an image recognition software with amateur images labelled with car make and model, I can help you extracting data from used cars classifieds websites.