What Car? Q&A - Introduction

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

In the postbag this week: fleet-friendly 4x4s, London Congestion Charge avoiders, and whether big discounts on websites are dodgy.

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

You can also turn to the What Car? Helpline with motoring problems or disputes you might be having. Click here to e-mail the Helpline.