BG Automotive Share: Auto Repair & Service BG Automotive Visit Website Request Info 659 20th Ave Longmont CO 80501 Longmont, CO 80501 720-684-6212 About Map About BG Automotive Your local Automotive Super Hero's. Team BG is here to serve you for all your automotive needs. What's Nearby? Distance: 5 10 15 20 25 50 mi.