Freightliner® Cascadia™ Is More Aerodynamic than Other Class 8 Vehicles

Independent Company Conducts Testing in State-of-the-Art Wind Tunnel

Download images for this press release

PORTLAND, ORE. – Aug. 29, 2007 – The Freightliner® Cascadia™ is officially more aerodynamic than other Class 8 commercial vehicles, according to Auto Research Center, Inc. (ARC), an independent aerodynamics research team based in Indianapolis used by vehicle manufacturers, NASCAR and other racing teams.

ARC researchers compared the Cascadia with four other similarly spec’d Class 8 vehicles – the International ProStar, Kenworth T660, Peterbilt 386 and Volvo 780 – using Freightliner’s state-of-the-art wind tunnel, the only aerodynamic testing facility in the world built specifically for Class 8 vehicles.

Testing took place in June and July. Researchers measured wind drag on the front, sides and back of the tractor, as well as the front of the trailer. There was a tractor-trailer gap of 48 inches. The amount of drag for the Cascadia was consistently lower and better than competitors. The ProStar recorded 7.8 percent more drag than the Cascadia; the 780 showed 9.6 percent more drag; the T660 showed 18.8 percent more drag; and the 386 showed 22.9 percent more drag.

“My overall conclusion from this test is that based upon the results, the Freightliner Cascadia is the most aerodynamic of the five tractors tested,” said Mike Camosy, ARC operations manager, in a written report.

“We read our competitors’ claims on aerodynamics and wonder if they were based on comparisons with older models or against models with very different specs. It didn’t appear to be scientifically based,” said Michael Delaney, senior vice president of marketing for Freightliner LLC. “Aerodynamic efficiency isn’t a function of looks – it’s about measured air flow resistance. We were confident the Cascadia would prove to be superior in this area when solid science was applied.”

“Customers don’t want to hear marketing people talk about aerodynamics; they want to hear it from independent sources, which is why we waited to talk about it until valid tests could be performed by outside experts. The results proved what we expected. It’s always great to have the facts independently validated.”

“The Cascadia had already accumulated 2,500 hours of aerodynamic testing over 16 months through our engineering group so we were pretty confident going in,” added Delaney. “The Cascadia is fuel efficient, quiet, comfortable and a kick to drive. It really is a smart choice for better business and lifestyle.”

Using anticipated fuel costs and differing applications, the Cascadia’s efficiency could save customers as much as $950 to $2,750 a year per truck, Delaney said. Fuel savings were calculated assuming each truck was driven 144,000 miles per year, with fuel at $3 per gallon, driving 60 mph.

Freightliner Trucks introduced the Cascadia in May. For more information or to contact a Freightliner dealer near you, visit or call 800-FTL-HELP.

Freightliner Trucks is a division of Freightliner LLC, headquartered in Portland, Oregon, and is the leading heavy-duty truck manufacturer in North America. Freightliner LLC produces and markets Class 3-8 trucks and is a part of DaimlerChrysler’s Truck Group, the world's leading commercial vehicle manufacturer.

For more information about the Cascadia, visit

Download images for this press release

Related Press Releases