Did you agree to let Honda provide your info to 3rd parties when you bought the car? If not, and you live in Canada, file a complaint with the Privacy Commissioner for a PIPEDA violation.
I have no idea in the US is there are similar rules regarding company’s sharing your personal info with 3rd parties.
News reports say that if you live in the UK you are protected by stronger right to privacy laws than we Yanks have, and while I don't know much about Canadian law, since Canada is part of the British Commonwealth I suspect you're protected better than we are, too.
Of course, when I say "protected", that really only means you have an easier time of it going after the muth**f***ers after they've
already stolen your personal data and sold it, not that privacy laws actually "protect" you in any real sense from a website harvesting personal data from you and sharing it with, or selling it to, whomever they please.
For example, note all the recent news about a company that used social media to manipulate public opinion, a company which used FaceBook to harvest info from people. It was against FaceBook's rules to do so, but there was not anything actually
preventing the company from doing as it pleased with the info it harvested. And of course, FaceBook's Mark Zuckerberg was shocked, SHOCKED that anyone might harvest info from FaceBook users and use that info to target them with fake news or links specifically tailored to their interests!
Okay, I'll stop ranting now.