What will happen if you drive smoothly?

Possible Answers:

a. You'll reduce journey times by about 15%

b. You'll increase fuel consumption by about 15%

c. You'll reduce fuel consumption by about 15%

d. You'll increase journey times by about 15%

Think you know the answer to this theory test question?

Crown copyright material is reproduced under licence from the Driver and Vehicle Standards Agency, which does not accept any responsibility for the accuracy of the reproduction. The Driver and Vehicle Standards Agency does not endorse in any way any advertisement displayed on this website.