Parts for your 2018 Toyota Prius-Universal joints

2018 Toyota Prius universal joints — what’s actually on the car

Short answer: the 2018 Toyota Prius doesn’t use traditional driveline universal joints (Cardan U‑joints). It’s a front‑wheel‑drive hybrid that drives the front wheels through half‑shafts with constant‑velocity (CV) joints. There’s no propeller shaft, so there are no serviceable driveline U‑joints to worry about. The only “universal joint” you’ll find on this model is in the steering intermediate shaft, which isn’t what most people mean when they ask about U‑joints on a Prius.

Technical sources backing this up include Toyota’s New Car Features (ZVW50 series) and the Toyota Repair Manual, which specify inboard tripod and outboard Rzeppa CV joints on the front drive shafts, plus the absence of a prop shaft on FWD models. The Toyota Electronic Parts Catalogue lists a steering intermediate shaft with a yoke‑type joint, but no driveline U‑joints. The factory maintenance schedule also contains no U‑joint inspection or lubrication items for this vehicle.

Why no driveline U‑joints on a 2018 Prius? It comes down to layout and refinement:

• Constant velocity: FWD half‑shafts need true constant‑velocity articulation for smooth torque delivery through big steering angles, CV joints do that, Cardan U‑joints don’t.
• Steering angle and suspension travel: CV joints handle larger angles with less vibration, ideal for turning and bump compliance.
• NVH and hybrid smoothness: CV joints minimise shudder and speed fluctuation, keeping the hybrid powertrain quiet and efficient during engine start/stop and regen.
• No prop shaft: With the transaxle driving the front wheels directly, there’s simply nowhere for a traditional U‑joint to live. Even AWD‑e/E‑Four variants use an electric rear drive unit without a mechanical prop shaft.

For owners searching “Prius U‑joint replacement”, what they usually want is CV joint or CV boot service. On a 2018 Prius, routine servicing means inspecting the CV boots for splits or grease fling, listening for clicking on full‑lock turns, and replacing the axle or joint if wear is found. The steering intermediate shaft joint is generally replaced as an assembly only if there’s play, binding, or a clunk through the wheel.

Popular questions

Does a 2018 Toyota Prius have universal joints?

Not in the driveline. It uses CV joints on the front half‑shafts and has no prop shaft, so there are no serviceable driveline U‑joints. There is a universal‑type joint in the steering intermediate shaft, which is separate from the drivetrain.

What should be serviced instead of U‑joints on a 2018 Prius?

Have the CV boots and joints inspected at service intervals or if there’s grease around the inner guards or a clicking noise on tight turns. In Australia and New Zealand, rough roads and heat can hasten boot wear, so catching a small split early can save a whole driveshaft replacement.

How can someone tell if the steering intermediate shaft joint is worn?

Tell‑tales include a light clunk through the wheel over bumps, a notchy or “sticky” feel near centre, or play when rocking the wheel with the car off. If suspected, it’s a safety item—have a technician confirm and replace the intermediate shaft assembly if needed.