In automobile design, an F4, or front-engine, four-wheel drive layout or Asymmetrical All-Wheel Drive places the engine at the front of the vehicle and drives all four wheels. This layout is typically chosen for better control on many surfaces, and is an important part of rally racing as well as the more familiar off-road vehicle.
|FF | FMR | FR | MF | RMR | RR | F4|
|Front-engine | Mid-engine | Rear-engine|
|Front-wheel drive | Rear-wheel drive | Four-wheel drive | Six-wheel drive|