May 14, 2008
Navistar Releases Over-the-Road and Wind Tunnel Testing Results of International ProStar
WARRENVILLE, IL – Navistar has released results of extensive testing confirming that the
International ProStar is the most aerodynamic and fuel-efficient Class 8 truck
on the road, the company said. Recent tests demonstrate that the International
ProStar is 7.3 percent more aerodynamic and seven percent more fuel-efficient
than Freightliner’s Cascadia, ProStar’s closest competitor. Navistar’s
researched revealed that at 120,000 miles a year, each ProStar can save
approximately $5,800 annually in fuel over its nearest competitor.
Navistar
is conducting and publishing ongoing testing results. Both over-the-road and
wind tunnel tests use rigorous TMC and SAE testing procedures, regarded as the
highest standards of testing in the transportation industry. Wind tunnel tests
were conducted at the National Research Council Institute for Aerospace
Research in Canada utilizing SAE J1252 wind tunnel testing practices.
Navistar
estimates that the International ProStar’s aerodynamic design can save 1,400
gallons of fuel annually per truck over competitive aero trucks (based on
20,000 gallons of fuel used per year and seven percent fuel savings; 120,000
miles per year at a six mpg baseline). At the national average price of diesel
($4.15 as of May 7, 2008), saving 1,400 gallons of fuel would save each
customer about $5,800 per truck annually.