Drafting
This is one of the most controversial hypermiling techniques as it involves driving close behind another vehicle, usually a van or lorry, essentially using the forward vehicle’s body to shield their own car from wind and so reduce drag.
Tailgating is illegal, and by doing this hypermilers are inviting a crash, as their reaction times and braking distance are severely reduced at this range.
Following too closely is responsible for five percent of traffic collisions, while sudden braking makes up a further five percent of accidents.
