The Peterbilt 386
was designed to be more aerodynamic while still keeping some more traditional styling features inside and outside the cab. The 386 generally gets around .3 to .5 mpg better then the 389 without compromising style and function. The improved aerodynamic design will reduce operating cost while the Detroit 60 series engine reduces your overall maintenance and repair cost. When you compile all these factors, its no wonder why the Peterbilt 386 is a top choice for trucking companies everywhere.