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An empty roof box does not weigh much, but its height, shape and placement increases air resistance so much that fuel consumption increases by approximately 10%.
Always remove roof racks and roof boxes when not in use.
Make study more fun and easier than ever. Play through the entire licence theory with our new game The Licence Game!
Test your knowledge with a free theory test. It works on all devices and the questions are designed to simulate the real theory test.
