What Does a Drivetrain Include in a BMW?

A BMW drivetrain is an integral part of its function and performance. It is responsible for transmitting power from the engine to the wheels. If something damages the drivetrain, it means you may have to look for replacement parts including a used engine.

The term "powertrain" is also used interchangeably with the drivetrain. However, they do not refer to the same thing. Such tidbits of information are imperative when you look for a used BMW engine for sale. Here’s what all comes under a drivetrain and how it works.

What is the Difference Between a Drivetrain and Powertrain Components?

A powertrain is not a single component of a car. It is an assembly of parts that move the wheels in conjunction with the engine. Powertrains typically include transmissions, differentials, wheels, axles, and constant velocity joints. The engine is the only feature that separates the powertrain from the powertrain. The engine is one of many moving components in the powertrain.

All moving parts in the engine and its components, including drivetrain parts, are part of the drivetrain. Its sole function is to convert kinetic energy into forwarding motion to turn the wheels and move the car.

The drivetrain is therefore very important to BMW. Failure of any of these parts can cause strange rattling noises and vibrations inside the vehicle. Take a closer look at drivetrain components.

5 Important Parts of the Drivetrain

The drivetrain consists of many important

• Transmission: This system transfers power from the engine to the wheels while allowing the driver to change gears as needed.
• Differential: Differential refers to the case that contains the axle gears and the differential itself. This is usually centered on the axis.
• Distributes power to all four drive wheels. With a curve. This component is located on the drive wheel axle. With front-wheel drive, the car rides on the front axle, and with rear-wheel drive, it rides on the rear axle.

• Axle Shafts: Axle shafts are located on each side of the rear differential.
• Axle shafts help transfer power from the differential to the rear wheels.
• Constant Velocity Joints: A constant velocity joint (CV) is designed to turn in any direction while keeping the drive wheels moving, allowing the axle to move with the vehicle.
• Wheels: These circular structures are metal hubs that are permanently attached to your BMW's frame. When the tire is mounted on the wheel, the tire contacts the road surface. The wheels are the final part of the powertrain and use the power of the engine to move the car.

How Does the Drivetrain Work?

This is the order in which the powertrain generates and outputs power.

The engine supplies energy to the flywheel. The flywheel works with the transmission to control the power sent to various drivetrain components. A drive shaft connected to the gearbox rotates rapidly to power the differential. A differential then distributes the power from all the driveshaft components, and before you know it, the wheels are spinning, and the car is in motion. As you can see, all these powertrain components need to work properly for your BMW to run smoothly.

Bottom Line

The drivetrain is an essential component of your BMW. If you sense something is off with your drivetrain, it’s time to have inspected it and figure out the root cause. In case your diagnosis point toward engine trouble, you can easily get a used BMW engine with a warranty to resolve your issue.

I'm Sherry Lin, a writer, automotive enthusiast, and a car nut from Southern California. I love reading about cars and writing about auto parts, used engines, motors, and transmissions.