Parts for your 2020 Mazda 3-Cv joint

2020 Mazda 3 CV Joint – What it does and how to look after it

Technical sources confirm the 2020 Mazda 3 (BP) uses CV joints. Mazda’s Workshop Manual for the BP-series Mazda3 details front drive shafts with outer and inner constant-velocity joints and routine boot inspection in the Drive Shaft (Front) section. The Mazda Electronic Parts Catalogue (BP) also lists front drive shaft sub‑components such as outer/inner joints, boots and clamps. On AWD variants, the rear drive shafts likewise use CV joints. So yes—CV joints are fitted and relevant on the 2020 Mazda 3.

A CV joint’s whole job is to transfer engine torque smoothly to the wheels while the suspension moves and the wheels steer. On the 2020 Mazda 3, the outer joint (at the hub) lets the wheel turn on full lock without shudder, and the inner joint (at the transmission or rear diff on AWD) manages length changes as the suspension bounces. When they’re healthy, you get quiet, vibration‑free acceleration and long tyre life.

They’re tough, but the rubber boots that seal in grease and keep out grit are the weak point. During regular servicing—every 10,000–15,000 kilometres—have the CV boots inspected for cracks, splits or grease sling. If a boot is torn, act fast: a cleaned and re‑greased joint with a new boot can save the axle. Leave it too long and the joint will wear, leading to a full replacement.

• Common signs it’s time for attention: clicking or clacking on turns, vibration on acceleration, grease sprayed inside the wheel or under the guard, and clunks on take‑off.
• Replacement tips: use quality joints or complete shafts, fresh high‑moly CV grease, new clamps and a new axle nut. Torque everything to spec and consider a wheel alignment check if the knuckle or strut was disturbed.
• For Aussie and Kiwi conditions—gravel roads, corrugations, salty air—inspect boots more often, especially after beach driving or floodwater exposure.

A complete driveshaft swap is often the most cost‑effective fix once a joint’s noisy. For minor boot damage caught early, a boot‑only repair is fine. Either way, a tidy CV joint keeps the Mazda 3 feeling tight, quiet and confident through every corner.

FAQs

Does the 2020 Mazda 3 have CV joints?
Yes. All BP‑series Mazda 3 models have CV joints on the front drive shafts. AWD versions also have CV joints on the rear drive shafts.

How long do CV joints and boots last on a 2020 Mazda 3?
With intact boots, CV joints often last well over 150,000 km. Boots are wear items—UV, heat and road debris can age them—so inspect them at each service and replace at the first sign of cracking.

What’s the cost‑effective repair if a CV joint is clicking?
If the joint is already clicking, a complete driveshaft replacement is usually the best value. If only the boot is torn and the joint is still quiet, a clean, re‑grease and new boot can save money.