A comparison study from MVTS found that Range Energy's RA-01 electric trailer provided fuel economy improvements on average of 36.3% (3.82 mpg) versus a standard tractor-trailer...
The NextGen EkoStinger, a one-piece aerodynamic fairing for Class 8 tractor trailers, achieved a fuel savings of 5.72 gallons per 1,000 miles or 5.30% in on-vehicle tests.