1 and 5 are a bit rich (maybe indicating misfires or bad wires), 3 is a bit oily looking (maybe indicating a valve stem seal), but honestly they aren't bad. You do NEED premium in a euro 500 though and it looks like that hasn't been happening in your engine. Run it till it's almost empty, put in a bottle of fuel injector cleaner and 5 gallons of 93 octane, and go on the highway. Gun it at 70 and keep it floored, it should downshift. Keep the pedal gunned until it shifts into the next gear, and don't be afraid of overrevving an M117 in that fashion, it's something you really should (maybe I should say "Need") to do to keep it clean! Keep doing this until your exhaust doesn't spew out black smoke like crazy.

FYI, it might not stop spewing out black smoke ever doing this. Your exhaust system might be coated with years of crud.