The purpose of the big orange button on your car's seat belt is obvious: It's how you lock and unlock it. But what's the little black button for?

From how to get into the car and start it to where you'll charge and how, rental agencies should provide more information.

Millions of drivers with 'stop' and 'start' technology in their car are at risk of £80 fines under a crackdown on idling. Unnecessary engine idling is an offence under Section 42 of the Road ...