Do four-wheel drive vehicles consume more fuel than two-wheel drive vehicles?

[McJoseph]

Four-wheel drive vehicles generally have slightly higher fuel consumption compared to their two-wheel drive counterparts of the same model, but not all four-wheel drive vehicles necessarily consume more fuel. Only under the condition that all other factors are equal, such as comparing the two-wheel drive and four-wheel drive versions of the same model, the four-wheel drive version may have slightly higher fuel consumption. Below is some related information about differential locks and crawl mode: 1. Central differential lock: A central differential lock is a locking mechanism installed on the central differential, used in four-wheel drive vehicles. 2. Crawl mode: This can be understood as the vehicle's ability to automatically control the engine's torque output, transmission system, and brakes, allowing the vehicle to pass through rough terrain at a very slow speed, essentially functioning as a mechanical rear differential lock.