Driving at an appropriate speed

Staying at or within the speed limit increases driver safety (see our own road safety campaign at www.2young2die.org.uk). It also reduces CO₂ emissions and saves money on your petrol costs. At 70mph you could be using up to 9 per cent more fuel than at 60mph and up to 15 per cent more fuel than at 50mph. [Source: direct.gov.uk]