A new BP petrol station consisting of 15 parts, found under Decor/Misc. Decor, all cost 0. It includes a car wash ( 4 parts ). I've used the garage parking bays, next to the pumps and one in the car wash. I've doubled up the roof to cover up the 6 pumps. You need the cheat moveobjects on to place all the items. The signs have to fit flush with the colums, so you'll have to rotate them until they fit properly. The same is with the roof logo signs. You might want to add fountains to the car wash ( as in my Caltex car wash ) to make it look more realistic.
BP petrol station (MediaFire)
Parking bays part 2