What Car? Q&A - Introduction

Are old-fashioned bumpers better than moulded ones? What's the law on dirty numberplates? What causes that awful 'boom' in your car when you’ve got the windows down? For the answer to all these queries and more, What Car? Q&A is the only place to come.

Our dedicated team is here to answer any query you have, on absolutely any automotive subject. Click here to submit your own question to the Q&A team. We publish a selection of your questions – along with our answers – here every week.

Don't forget you can also turn to the What Car? Helpdesk with motoring problems or disputes you might be having. Click here to e-mail the Helpdesk.