Parts for your 2018 Subaru Impreza-Cv joint

2018 Subaru Impreza CV joint — what it does and how to look after it

Yes, a CV joint is used on the 2018 Subaru Impreza. Technical sources including Subaru’s factory Workshop Manual for the GK/GT Impreza (Front Axle and Rear Axle sections) specify outer EBJ/Rzeppa and inner DOJ-type constant velocity joints on the front drive shafts, with matching CV joints on the rear half-shafts for AWD models. Subaru’s maintenance schedules also call for routine inspection of axle (CV) boots, reinforcing that CV joints are a standard driveline component on this model.

On this Impreza, the CV joint lets the driven wheels turn and move up and down while still receiving smooth torque from the transmission and differentials. The outer joint handles steering angles, while the inner joint manages plunge and suspension travel. In everyday terms: it keeps the drive silky through corners and over bumps, without vibration or binding.

During regular servicing, it’s smart to check the CV boots closely. If a boot splits, grease flings out and water/dirt get in, quickly wearing the joint. Catching a torn boot early often saves the joint. Most workshops in Australia and New Zealand will inspect for grease splatter around the inside of the rims, cracked rubber, or play in the shafts every service or about 10,000–15,000 km.

Replacement strategy depends on condition. If the joint is still quiet and smooth, a fresh boot and correct moly CV grease can be fitted. If there’s clicking on turns or noticeable vibration under load, a complete shaft (driveshaft/half-shaft) replacement is typically the most reliable fix, and often cost-effective on labour. Always use quality clamps, new circlips and the correct axle nut, and torque everything to factory spec to protect the wheel bearing and hub.

• Common signs it needs attention:
  • Clicking or popping while turning, especially under power
  • Vibration on acceleration, felt through the floor or steering
  • Grease sprayed inside the wheel or a visibly torn boot
• Good service habits:
  • Inspect boots and clamps at each service, clean and re-clamp if weeping
  • Address any splits immediately and regrease with the correct CV grease
  • After shaft replacement, road test for noises and recheck for leaks

For Australia and New Zealand models (AWD), remember there are CV joints at both ends: front drive shafts and rear half-shafts. Keeping the boots intact and the grease clean is the key to long CV joint life on the 2018 Subaru Impreza.

Popular questions about 2018 Subaru Impreza CV joints

Do all 2018 Subaru Imprezas have rear CV joints?
In Australia and New Zealand, the 2018 Impreza is sold with Subaru’s Symmetrical AWD, so it has CV joints on both the front drive shafts and the rear half-shafts. In some other markets a FWD variant exists, which only uses front CV joints.

Can a damaged CV boot be repaired without replacing the whole shaft?
If the joint hasn’t started clicking and the wear surfaces look clean, replacing the boot and repacking with the correct moly CV grease is fine. Once there’s noise, corrosion or excessive play, a complete shaft replacement is usually the better long-term fix.

What mileage should owners start worrying about CV joints?
There’s no fixed kilometre cutoff, well-kept CVs last a long time. The real trigger is boot condition and symptoms. Have the boots checked at every service, and act quickly on any grease leaks, clicks on turns, or vibration under load.