Parts for your 2018 Subaru Impreza-Driveshafts

2018 Subaru Impreza Driveshafts

Technical sources including Subaru’s factory service manual for the GK/GT platform (2017–2019) and Subaru Australia/New Zealand specifications confirm the 2018 Impreza runs Symmetrical All‑Wheel Drive as standard. That layout uses multiple driveshafts: a two‑piece propeller shaft from the transmission to the rear differential, plus constant‑velocity (CV) axle shafts at each wheel. In short, driveshafts are absolutely fitted and relevant on this model.

The driveshafts do the heavy lifting of getting torque to the wheels while allowing suspension travel and, up front, steering movement. The prop shaft sends power rearward, while the CV shafts (front and rear) use inner/outer joints to keep things smooth and quiet over bumps and through corners. Protective rubber boots retain grease and keep grit out—when they split, joints wear quickly.

There’s no fixed replacement interval for Impreza driveshafts, it’s condition‑based. Regular inspection during routine servicing is the go. Look for split boots, slung grease on the underbody or brakes, and listen for clicking on tight turns (outer CV joints), shudder on take‑off, or a droney vibration at highway speeds (prop shaft centre bearing or joint wear). A clunk when shifting from reverse to drive can hint at excessive play.

• Inspect CV boots and clamps every service (around 12–15,000 km or annually).
• Replace torn boots immediately to avoid joint damage, if there’s clicking or play, fit a quality CV shaft.
• Check the prop shaft’s centre support bearing and couplings for cracks, play, or noise.
• Look for oil leaks at transmission/differential flanges that can contaminate joints.

When replacing a CV shaft, use OEM or reputable aftermarket units and a new axle nut. Torque to spec and stake the nut, recheck after a short drive. If removing the prop shaft, mark the flanges to maintain balance and replace any single‑use hardware. Many Subaru prop shafts are serviced as complete assemblies, if the centre bearing or non‑serviceable joints are worn, swap the lot. A wheel alignment usually isn’t required for shaft replacement, but if the front end was disturbed or there’s uneven tyre wear, get it checked.

Kept clean, sealed, and properly torqued, the Impreza’s driveshafts give long, quiet service—ideal for everyday commuting and those wet Kiwi or Aussie backroads.

Does the 2018 Subaru Impreza have a driveshaft?

Yes. The 2018 Impreza’s Symmetrical AWD uses a two‑piece propeller shaft to the rear differential, plus CV axle shafts at all four corners. Subaru’s factory service information and ANZ model specs list these components as standard equipment.

What are the signs the driveshafts need attention?

Common clues include clicking on full lock (outer CV joints), grease flung around a wheel or underbody from a split boot, shudder on take‑off, and a steady vibration at highway speeds hinting at a worn prop shaft bearing or joint. Any clunks when shifting from reverse to drive are also worth checking.

Can they drive with a torn CV boot?

It’s best not to. A torn boot quickly lets grease out and grit in, which can ruin the joint. If caught early, a new boot and fresh grease can save the shaft. If there’s already noise or play, replace the CV shaft to avoid roadside dramas.