Why can't cars climb slopes exceeding 45 degrees?

[VonChristian]

Except for some special off-road and military vehicles, most cars lack sufficient horsepower to climb a 45-degree slope. Here's an introduction to the climbing gear: 1. Definition: It refers to a gear specifically designed for hill climbing in a car's transmission system. 2. Principle: Achieved through mechanical deceleration, a reduction gear is installed at the front end of the rear axle differential, allowing manual switching! When switched to the low-speed gear, the vehicle's speed is halved while torque doubles. 3. Function: The M gear represents the manual mode in automatic transmission vehicles, enabling drivers to manually upshift or downshift using "M+" and "M-" buttons. This operation better suits actual driving conditions during hill climbing or overtaking.