Sedans rarely have rear windshield wipers because of their aerodynamic design. The sloping rear window of a sedan naturally allows rainwater to flow off due to gravity and airflow while driving.
In contrast, vehicles like SUVs, hatchbacks, and wagons have a more upright rear window, which tends to trap water and dirt, making a rear wiper necessary for clear visibility. Additionally, the cleaner airflow over a sedan's rear helps maintain better rear visibility without the need for a wiper.
