Are HTML tables bad for SEO?

Is it bad to have HTML table that consists of 600 rows? At the moment I have about 600 rows and 3 columns: month/year | car manufactorer | car model. Every "car model" column have unique internal link. Table also has 10 headings (colspan="2"). Every heading have anchor link.

The table is updated 1-2 times a month. 2-5 lines are added. Sometimes the same amount is removed.

Is such a table good? Is there anything I can optimize? Would it be reasonable to make 10 different tables with 10 different headings?

I would also like to mention that I use Wordpress TablePress to manage the tables.