Can you travel in Oman without renting a car?
You can visit Oman without renting a car, but the independent version becomes narrower. Muscat is manageable, drivers can solve gaps, and some transfers exist; the classic wadi, mountain and desert trip is much easier with wheels.
Answer
Oman without a car is not impossible, but it changes the deal. You can base in Muscat, hire drivers, join tours and keep the itinerary simple. That may be the right choice if you dislike driving or want a softer trip. What it does not give easily is the self-directed Oman many travellers picture: stopping at viewpoints, leaving early for a wadi, changing plans when heat or weather shifts, or linking Nizwa, mountains and desert smoothly. Without a car, spend money on good logistics rather than pretending the route will behave like a train-friendly city break.