The Model 386 successfully merges conventional Peterbilt styling with aerodynamic performance. It has been recognized as fuel efficient and environmentally friendly by the EPA's SmartWay program.

With the versatility of a range of detachable Unibilt sleepers, and available as a Class 8 truck or tractor, the Model 386 is well suited to meet the needs of fleets in numerous applications including line, regional, bulk and tanker hauling. It features Peterbilt's lightweight, all-aluminum cab with bulkhead style doors, lap seam construction and aircraft grade fasteners for long-life durability and watertight, rattle-free operation. The Model 386 is available with three premium cab interiors, and driver productivity is maximized through an ergonomic working environment that features LED backlit gauges, easy-to-reach switches, and ample lighting and storage.