Having just done my first trip down narrow tracks with the sound of Ferns and plants dragging down the side of the jeeps paintwork - BOY AM I GLAD JEEP LEFT THE MUDGUARDS AS UNPAINTED PLASTIC - they obviously knew what jeeps were supposed to be used for.
My last vehicle was a Renault Scenic RX4 - that had the bottom half of the doors and the fenders covered with plastic guards- Brilliant, no scratches at all - no dick head could dent you car with their door or a shopping trolley , and a quick wipe over with a plastic treatment like 303 Aerospace protectant and it all stayed looking like new.
If you could buy clip on plastic covers for the doors on the jeep imagine how popular they would be - you could remain shiney on the street while enjoying the bush without damage