There are a number of factors that can affect vehicle balance, including the weight of the engine and transmission, the location of the fuel tank, and the suspension setup. Vehicle manufacturers use a variety of techniques to achieve good vehicle balance, such as placing the engine and transmission in the center of the vehicle and using a rear-wheel drive or all-wheel drive layout.
Vehicle balance can also be affected by the weight of the passengers and cargo. When a vehicle is heavily loaded, the weight distribution can change and this can affect its handling characteristics. It is important to be aware of how the weight of passengers and cargo can affect your vehicle's balance and to adjust your driving accordingly.