In Roblox Brookhaven, the Auto Shop can be found next to the Fire Station. The Auto Shop building is a short walk/jog from the player spawn and should take less than a minute to find, especially if players are already familiar with the general map layout.
Upon spawning into Roblox Brookhaven, players will see a small fountain, the Police Station to their left, and a main road directly in front of the player. This main road, called Brookhaven Avenue, is the road players will take to reach the Auto Shop. The direction from spawn is a straight path from the Police Station to the Auto Shop.
First, locate and run past the Police Station. After passing the Police Station, continue running forward in the same direction until you inevitably reach the Auto Shop. Additional landmarks that players will pass is the Hospital and the Fire Station, in that order.
The Auto Shop can be found directly to the left of the Fire Station. If players have run past the Bridge, then they have travelled too far, as the Auto Shop is also found just before travelling under the Bridge.
Check out these pictures for a general layout of the Auto Shop's immediate surroundings: