Diesel sweepers and scrubbers offer several advantages, including high power and efficiency for heavy-duty cleaning tasks, making them well-suited for large outdoor areas or industrial sites. They generally have longer operating times between refuels compared to electric models, which can enhance productivity. Additionally, diesel engines are durable and can handle intensive usage. However, diesel models tend to emit more pollutants than electric or propane alternatives, raising environmental and compliance concerns, especially in indoor or populated settings. Noise levels are generally higher, which can be disruptive. The maintenance costs for diesel engines are also typically higher, and fluctuations in diesel fuel prices can impact operational costs.