Stable income: Somewhat stable

Car renting as a side hustle can be moderately stable for most people who try it. From my research online and personal experience, there is a decent baseline income potential, but it can be unreliable at times due to fluctuations in demand. Some months may bring similar earnings, while others could be unpredictable. I'd rate it a 2 out of 3 because while it offers income opportunities, there are factors like seasonal variations and market conditions that can impact earnings.