Parts for your 2018 Audi Q5-Universal joints

Are universal joints used on the 2018 Audi Q5 (FY)?

Short answer: no. On the 2018 Audi Q5 (FY platform), traditional cross-type universal joints (U-joints) aren’t fitted. Audi uses constant velocity (CV) joints on both the front and rear drive shafts (half-shafts) and on the propeller shaft running between the transmission and rear differential.

This isn’t guesswork. Audi’s factory repair information (ErWin/ELSA) for the FY Q5 describes the propeller shaft with a centre support bearing and CV joints at its ends, and the axles exclusively with CV joints and protective boots. Likewise, Audi’s ETKA parts catalogue for FY Q5 driveline groups lists CV joints and complete shaft assemblies, with no standalone cross-type U-joint service parts. Major driveline suppliers’ catalogues for the FY Q5 also show complete propshafts and axle shafts using CV joints rather than replaceable U-joints.

Why no U-joints? CV joints deliver constant rotational speed through greater operating angles, which suits the Q5’s independent suspension and Quattro layout. They’re quieter, smoother, and better for NVH, which is right on brief for a premium SUV. The trade-off is serviceability: instead of greasing a U-joint now and then, CV joints are sealed-for-life and rely on intact boots to keep grease in and grit out. When wear or boot damage occurs, the fix is typically a boot kit, CV joint kit, or a complete shaft assembly.

For owners chasing “universal-joints” servicing on a 2018 Q5, the relevant checks shift to CV-joint health and related hardware:

• Inspect CV boots (front, rear, and prop shaft ends) for splits, grease sling, or hardening.
• Listen and feel for tell-tales: clicking on full lock (outer CVs), shudder on take-off or a droning vibration at motorway speeds (propshaft CVs or centre support bearing).
• Check the propshaft centre support bearing for play and the flex coupling (if fitted) for cracks.
• Use new stretch bolts and correct torque/angle on any shaft refits to avoid imbalance and rattles.

There’s no routine greasing interval because everything’s sealed, but it’s smart to have a technician eyeball the boots and mounts at each service, especially if the Q5 sees gravel roads, snow, or coastal conditions. Catching a torn boot early is far cheaper than replacing a noisy CV or a whole shaft down the track.

Does a 2018 Audi Q5 have universal joints?

No. The FY-series Q5 uses constant velocity (CV) joints on the axles and on the propeller shaft. Audi doesn’t fit serviceable cross-type U-joints to this model, and you won’t find U-joint kits listed in the OEM parts catalogue for it.

What causes driveline vibration if there are no U-joints?

On these Q5s, common culprits are worn propshaft CV joints, a failing centre support bearing, a cracked flex coupling, or a damaged wheel/tyre. Less often, an inner or outer axle CV starts to bind and causes shudder on take-off. Proper diagnosis includes checking boot condition, looking for sling marks, and inspecting bearing play and mount condition.

Do the Q5’s CV joints need routine greasing?

They’re sealed-for-life and aren’t greased as a service item. The key maintenance is regular inspection of the rubber boots and clamps. If a boot tears or slings grease, address it promptly with a new boot or CV kit to avoid contamination and premature wear.