A small vehicle repair shop in a barn at 3250 Old Sonoma Road was gutted by fire Tuesday night, CalFire reported.
The fire destroyed a pickup truck, two cars, two tractors and five ATVs, as well as a forklift, CalFire said.
The blaze, which was contained at 9:45 p.m., drew units from CalFire, Napa County Fire Department, Napa City, American Canyon Fire Protection District and Schell Vista Fire Protection District.
The fire, which was reported by a passerby on Old Sonoma Road, damaged a nearly electrical power pole transformer, but did not threaten any other structures, officials said.
CalFire said the fire was under investigation. No estimate of damages was given.