What is a main feature of a cab configuration that differentiates a crew cab from an extended cab?

A crew cab is characterized by its configuration that includes four full-size doors, which allows for easier access to both the front and rear seating areas. This design enhances passenger convenience, making it easier for individuals to enter and exit the vehicle, especially in situations where rear passengers might need to access their seats frequently. Crew cabs typically provide more spacious interior room compared to extended cabs, which generally have smaller rear doors and potentially limited access to the rear seats.

In contrast, while extended cabs may offer some seating capacity and cargo flexibility, their door configuration is distinct; they often feature smaller rear doors that make access to the rear seats less convenient. The primary distinction lies in the full-size doors of the crew cab promoting accessibility and enhancing usability for families or groups who need to regularly use the back seats.