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Eco speed

Eco-driving on longer journeys is all about speed. Driving at 60mph uses around six per cent more fuel that driving at 50mph, while driving at 70mph uses 15 per cent more. This form of eco-driving is important on motorways, as driving at 80mph uses up to 25 per cent more fuel than driving at 70mph. In any one hour driving at 80 rather than 70, you will have covered just 10 miles more.

Is it really worth 25 per cent more fuel to get there 10 minutes earlier?