Parts for your 2018 Mazda 3-Driveshafts

2018 Mazda 3 driveshafts — what they do and when to service them

Based on technical references including the Mazda 3 (BM/BN, 2014–2018) Workshop Manual “Front Drive Shaft” section and the Mazda genuine parts catalogue for BM/BN models, the 2018 Mazda 3 is front‑wheel drive and uses two front driveshafts (CV axle shafts). There’s no rear propeller shaft on this model because it wasn’t offered with AWD in this generation. So yes — driveshafts are relevant and fitted to the 2018 Mazda 3.

The driveshafts on a 2018 Mazda 3 take engine torque from the transaxle and deliver it to the front wheels while the suspension moves and the wheels steer. Each shaft has constant velocity (CV) joints that keep power delivery smooth through tight steering angles and bumps. Rubber boots keep those joints packed with grease and sealed from grit and water — keeping those boots intact is the big ticket item for long life.

There’s no set replacement interval for driveshafts, they’re a “inspect and replace if worn” item. As part of routine servicing in Australia or New Zealand, it’s smart to check them at each service:

• Look for split or weeping CV boots and any sling of grease around the inner guards or suspension arms.
• Listen for clicking on tight turns, especially under light throttle — a classic outer CV joint warning sign.
• Note shudder or vibration on acceleration, which can point to joint wear or a bent shaft.

If a boot is torn and caught early, a boot kit can save the joint. If there’s clicking, excessive play, rust dust, or the grease is contaminated, a complete shaft (or joint) replacement is usually the better call. When replacing, always use a new axle nut, torque it to factory specs, and check for any gearbox output seal seepage after refitting. A quick road test for noise and vibration is essential, and it’s worth checking wheel alignment if the suspension has been disturbed.

To help the driveshafts live a long life, keep ride height and alignment within spec, avoid hard launches and kerb strikes, and stick to regular inspections every service (roughly 10,000–15,000 km). Treated well, the Mazda 3’s driveshafts often last the life of the vehicle.

Popular questions about 2018 Mazda 3 driveshafts

Does a 2018 Mazda 3 have driveshafts?
Yes. It has two front driveshafts (CV axle shafts) because it’s a front‑wheel drive model. It doesn’t have a rear propeller shaft, as AWD wasn’t offered for the 2018 BM/BN series.

How long do the driveshafts last?
If the CV boots stay intact and the car isn’t driven with damaged joints, many last well over 150,000 km — often the life of the car. Failures usually stem from torn boots that let grease out and water in, lifted or lowered ride heights that stress joint angles, or hard impacts from potholes and kerbs.

Is it safe to drive with a clicking CV joint?
It’s not ideal. Light clicking may let someone get to a workshop, but continued driving risks joint failure, loss of drive, or further damage. Best move is to book it in promptly and avoid heavy acceleration and full‑lock manoeuvres until it’s inspected.