Parts for your 2019 Subaru Impreza-Driveshafts

Understanding Driveshafts on the 2019 Subaru Impreza

The 2019 Subaru Impreza is a popular choice among Aussies who want a reliable, all-wheel-drive compact car. One question that often pops up when discussing vehicles like the Impreza is whether they use driveshafts and what role those components play. For the 2019 model, driveshafts are indeed relevant but may not be immediately obvious depending on the drivetrain layout.

Subaru's signature symmetrical all-wheel-drive system means power is delivered to all four wheels simultaneously. This setup requires specific components to transfer torque from the engine and transmission to each wheel. Driveshafts are a critical part of this arrangement, albeit some might refer to them as half shafts or axles, depending on the context.

Simply put, driveshafts in the 2019 Subaru Impreza are used to transfer rotational power from the transmission or the centre differential to the wheels. In this car, the Impreza has a transversely mounted boxer engine connected to a manual or CVT transmission. From the transmission, power is channelled through front driveshafts to the front wheels, and through a centre differential to the rear driveshafts which connect to the rear wheels. These rear driveshafts are sometimes called propeller shafts or rear half shafts.

If the Impreza was front-wheel drive only, it wouldn't need rear driveshafts since power wouldn't be sent to the back. But since Subaru's symmetrical AWD sends power to all four wheels for better traction and handling, driveshafts on both ends are essential.

Driveshafts have a few important jobs. First, they must efficiently and reliably transfer rotational force. Second, they need to accommodate suspension movement and steering angles, especially on the front wheels. This is why driveshafts usually include constant velocity (CV) joints that allow for smooth power delivery even when the wheels are turning or moving up and down over bumps.

When it comes to maintaining or replacing driveshafts on the 2019 Subaru Impreza, it is essential to understand their wear points and typical symptoms of failure. Like any mechanical part, driveshafts are subject to wear and tear. The CV joints are the most commonly affected components because their rubber boots can crack or tear, allowing dirt and moisture in and leading to premature joint failure.

Symptoms that might indicate a driveshaft or CV joint issue include:

• Clicking or popping noises, especially during sharp turns
• Vibrations felt through the steering wheel or floor when accelerating
• Grease splattered around the wheel well area or noticeable damage to the CV boots

Regular inspection during servicing is key to catching these problems early. Subaru recommends a thorough inspection of the driveshafts and CV boots at routine service intervals, especially if the car is often used on rough roads or in tough driving conditions.

If a driveshaft or CV joint shows signs of damage or wear, replacing the entire driveshaft assembly or just the damaged CV joint is crucial. Neglecting the issue can lead to total joint failure, causing a loss of power to a wheel and possibly unsafe handling. Replacement parts should be genuine Subaru components where possible to ensure proper fit and performance.

Oil changes and other routine maintenance don't directly impact driveshafts, but keeping all drivetrain components in good condition is essential. This includes monitoring the transmission fluid and differentials since any issues there can put extra strain on the driveshafts. A good rule of thumb is that a well-maintained Impreza with clean fluids and no undue stress on the drivetrain will have driveshafts with a long service life.

DIYers should handle driveshaft issues with care. Removing and replacing driveshafts often requires special tools and knowledge to avoid damaging other drivetrain parts or endangering personal safety. Most owners are better off relying on a qualified mechanic for inspection and repairs related to driveshafts.

Ultimately, driveshafts may not be the most glamorous part of a car, but they are absolutely crucial in making sure your 2019 Subaru Impreza delivers consistent, smooth power to all wheels. Proper maintenance, timely inspection, and replacement when necessary will keep your Impreza feeling sharp and secure on the road. And with that reliable AWD system working as it should, drivers can enjoy the traction and handling Subaru is known for, whether they're cruising city streets or tackling Aussie backroads.