The e-Four (e4) system in the TOYOTA ALPHARD 30 series hybrid is actually an AWD (All-Wheel Drive) system, not a traditional 4WD (Four-Wheel Drive). This is because the e-Four system doesn’t have the mechanical components like transfer cases, driveshafts, and differentials that are typically found in traditional 4WD systems. Instead, it uses an electric motor to provide power to the rear axle, thus achieving all-wheel drive functionality.

Why do some people believe this vehicle’s 4WD isn’t truly 4WD but rather AWD?

• • The operation of the e-Four (e4) system: The e-Four system uses an electric motor to power the rear wheels. Traditional 4WD systems usually require mechanical connections (such as driveshafts and differentials) to distribute power to all four wheels, whereas the e-Four system distributes power to the rear wheels through an electric motor. This makes it different from a traditional 4WD system.

• • Different drive modes: 4WD systems are typically found in off-road vehicles or those requiring very high traction, and they provide greater pulling power, especially at low speeds. On the other hand, AWD systems are more commonly used for city driving, and they don’t have the strong mechanical linkage that traditional 4WD systems have. They are suitable for a variety of road conditions but are not necessarily designed for extreme off-road scenarios.

So, it’s not that it isn’t a “4WD” in the traditional sense, but rather a new kind of 4WD.

The e-Four system provides the benefits of four-wheel drive, but due to its different operation and structure, it functions more like a modern all-wheel drive (AWD) system rather than a traditional 4WD system.