Parts for your 2020 Subaru Impreza-Driveshafts

2020 Subaru Impreza driveshafts: what they do and how to look after them

Technical sources confirm driveshafts are absolutely relevant on the 2020 Subaru Impreza. The Subaru Service Manual for MY2020 (Driveline/Axle and Propeller Shaft sections), Subaru model specifications for Symmetrical AWD in AU/NZ, and the Subaru parts catalogue listings for “Front Axle Shaft” and “Propeller Shaft Assembly” all show the Impreza uses front CV driveshafts. AWD variants also add a propeller shaft to the rear differential and rear CV halfshafts. Even FWD versions still rely on front CV driveshafts, so the component is always part of the car’s driveline.

The job of the driveshafts is to send torque from the CVT transaxle to the hubs while allowing for suspension movement and, up front, steering angles. On AWD models, a balanced, two-piece propeller shaft with a centre bearing carries power to the rear diff, then rear CV shafts deliver it to the wheels. When everything’s healthy, the car pulls smoothly, corners quietly, and vibes stay low from town speeds to motorway cruising.

There’s no fixed replacement interval for driveshafts, but routine inspection is smart practice at each service. Keeping boots intact and joints greased is the key to long life.

• Inspection tips:
  • Check CV boots for tears, loose clamps, or flung grease.
  • Listen for clicking on full lock (often outer CV wear).
  • Feel for shudder on take-off or vibration 80–110 km/h (possible inner CV, prop shaft U-joint, or centre bearing issues on AWD).
  • Look for rust dust around U-joints and play in the prop shaft centre bearing (AWD).
• Replacement guidance:
  • Use quality shafts and the correct CVJ grease, keep splines clean.
  • Always fit a new axle nut and stake it, torque to the spec in the Subaru Service Manual to protect wheel bearings.
  • Avoid levering on ABS tone rings and seals, cap open joints to prevent contamination.
  • On AWD, mark prop shaft flanges before removal to maintain balance, Subaru U-joints are typically non-serviceable, so replace the assembly if worn. Inspect/replace the centre bearing if perished.
• After the job:
  • Road-test for clicks, clunks, or vibration. A wheel alignment isn’t usually required for shaft replacement, but confirm no ABS warnings and recheck for any fresh grease sling.

Owners in harsher conditions—gravel roads, heavy rain, or lowered suspensions that increase CV angles—should inspect more often. Keeping boots sealed and components torqued correctly will see most Impreza driveshafts run reliably for many hundreds of thousands of kilometres.

Popular questions about 2020 Subaru Impreza driveshafts

How long do driveshafts typically last on a 2020 Impreza?
With intact boots and quality grease, many Impreza driveshafts last 150,000–250,000 km or more. Heavy loads, potholes, frequent full-lock manoeuvres, or torn boots accelerate wear. Regular inspections at service time help catch issues early and stretch lifespan.

Is it okay to drive with a torn CV boot?
It’s risky. A torn boot lets grease out and grit in, quickly damaging the joint. Short, gentle trips to reach a workshop might be unavoidable, but prompt boot or shaft replacement saves the CV joint and avoids a tow later.

What causes vibration under load in an AWD Impreza?
Common culprits include a worn inner CV joint, a failing prop shaft centre bearing, or a tired U-joint. Engine or transmission mounts can add to the feel. A technician will check joint play, boot condition, balance marks on the prop shaft, and mount integrity to pinpoint the source.