What Car? Q&A - Introduction

Whatcar.com's experts have been busy answering some keen questions from our readers.

Our postbag this week includes… how to convert your car to LPG, whether it's worth buying an MG TF, what 'Cat D' stands for, and what a number plate actually means.

Click here to submit a question to the Q&A team. We publish a selection of your questions – along with What Car?'s answers – here every week.

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.