Why don't sedan cars have rear wipers?
1 Answers
The reasons why sedan cars do not have rear wipers are as follows: 1. Structurally speaking: Sedan cars do not have a suitable position to install a rear wiper. Hatchbacks generally have their rear glass and rear door integrated, with the wiper pivot installed on the metal door body below the rear door glass. When the rear door is lifted, it does not affect the wiper. However, sedan cars cannot install the wiper pivot on the trunk lid (let alone on the glass). It can be imagined that if it is installed on the trunk lid, when the lid is opened, the glass remains stationary, causing a misalignment between the wiper and the glass, making it unsuitable for installation. The Mazda6 sports version and Hyundai Coupe have rear wipers. Although these two models appear to be sedans, they are actually rear hatchbacks, structurally similar to hatchbacks. Therefore, sedans do not have rear wipers because there is no suitable place to install them, unless they are rear hatchback sedans. 2. From an airflow perspective: The rear window glass of a sedan is less likely to get dirty. For straight-back hatchbacks, the airflow separation point is at the rear of the roof, creating a turbulent low-pressure area behind the entire car. Dirt gets swept up and sticks to the rear window glass, making it dirty and affecting visibility. For sedans, the low-pressure separation point is at the edge of the trunk, only dirtying the rear "butt" without affecting the rear window glass. Additionally, due to the airflow, dirt on the curved rear window glass is blown away. 3. The sedan's trunk blocks the dirty water from the rear wheels: Compared to hatchbacks, sedans have an additional trunk at the rear, which blocks almost all the dirty water generated by the rear wheels. This means only the "butt" gets dirty, and dirty water does not splash onto the rear window. Therefore, the presence of the trunk in sedans significantly reduces the necessity of a rear wiper.
