Inner CV joints for Audi A3 1.8 Tfsi Quattro
This range of inner CV joints is intended for the Audi A3 1.8 TFSI quattro hatchback with four-wheel drive. Select your vehicle's make, model and engine to confirm the correct part for...
Products for Inner CV joints for Audi A3 1.8 Tfsi Quattro
- Position: Inner
- Seal diameter: 94 mm
- Inner splines: 33
- Number of joints: 3
- ABS teeth: 0
- Position: Rear, Inner
- Diameter: 86 mm
- Splines gearbox side: 33
- Width: 34 mm
- Position: Inner
- Seal diameter: 100 mm
- Inner splines: 33
- Joint diameter: 100 mm
Inner CV joints for Audi A3 1.8 Tfsi Quattro
The inner CV joint on an Audi A3 1.8 Tfsi Quattro is a vital component in the car's sophisticated drivetrain. Unlike front-wheel-drive cars, the Quattro system requires power to be distributed efficiently to all four wheels, placing high demands on the durability and precision of the inner joints. These joints are mounted closest to the gearbox or differential, allowing the drive shaft to plunge as the suspension moves. For a performance car such as the Audi A3 with the 1.8 Tfsi engine, keeping these components in top condition is essential to maintain smooth power delivery and minimise driveline losses. Wear here can quickly lead to consequential issues across other parts of the transmission if not rectified in good time.
What does the inner CV joint do on the Audi A3 1.8 Tfsi Quattro?
The primary task of the inner CV joint on your Audi A3 1.8 Tfsi Quattro is to transmit torque from the gearbox to the drive shaft whilst accommodating the angular changes and length variations that occur during driving. Whereas the outer CV joint mainly manages steering angles at the wheels, the inner constant velocity joint acts as a plunging joint. This means it can slide inwards and outwards to compensate for the changing distance between the gearbox and the wheel hub as the suspension travels over bumps. This design, often a tripod joint on modern Audi models, is engineered to reduce friction and heat build-up, which is crucial for long service life in a four-wheel-drive car where driveline loads are constantly high.
Common signs of wear
Wear in the inner CV joint often presents differently from problems in an outer joint. The most common symptom is vibration through the entire car during acceleration, frequently most noticeable between 50 and 90 km/h. Unlike wheel imbalance, these vibrations typically vanish as soon as you lift off the accelerator. Another telltale sign is a dull thud or clunk under load or when shifting between drive and reverse. If the CV boot has split, grease can escape and dirt can penetrate, rapidly destroying the joint's internal raceways and needle bearings. If you spot grease splattered on the underside of the car near the gearbox, it is high time to take action before complete failure occurs, which could damage the gearbox output flanges.
How to choose the correct inner CV joint
Selecting the right inner CV joint for an Audi A3 1.8 Tfsi Quattro can be challenging, as variations exist depending on gearbox type (such as manual or DSG) and specific model years. The most important step is to check the number of splines or teeth on both the shaft and gearbox sides, alongside the outer diameter of the joint. As driveline specialists, we make this simple. By selecting your car's make, model and engine variant, you filter out all unsuitable options to find the exact parts for your vehicle configuration. We offer an extensive fitment guarantee so you can be completely confident that the replacement part you order will fit properly without modification, saving you time and frustration in the garage.
Related parts to check
Feel free to check these related pages for the same vehicle when working on the inner CV joint:
When a drivetrain component shows signs of wear, related parts on the same car often warrant inspection too. By comparing these exact pages for the Audi A3 1.8 Tfsi Quattro, it is easier to determine whether the issue lies specifically with the inner CV joint or with an adjacent section of the drivetrain.
This is especially important on models where vibrations, play and noises can travel between several parts of the same assembly. A quick check of related categories reduces the risk of replacing the right type of part while overlooking an adjacent component that contributes to the same problem.
- Audi A3 1.8 Tfsi Quattro
- Drive shafts for Audi A3 1.8 Tfsi Quattro
- Outer CV joints for Audi A3 1.8 Tfsi Quattro
- Propeller shafts for Audi A3 1.8 Tfsi Quattro
Why buy from cvjoint24.com?
Ordering from cvjoint24.com means choosing a Swedish driveline specialist dedicated to quality and technical expertise, shipping directly to you across the EU from our central warehouse in Helsingborg, Sweden. We understand the complexity of modern drivetrains, especially on technically advanced cars like the Audi A3 1.8 Tfsi Quattro. Our goal is to ensure you receive the right part first time, backed by thorough technical data and our straightforward vehicle selection by make, model and engine. We stock only car parts that satisfy our strict standards for fit and longevity, making us the dependable choice for DIY mechanics and professional workshops alike.
Frequently asked questions about inner CV joints for Audi A3 1.8 Tfsi Quattro
How do I know whether it is the inner or outer CV joint that is faulty on my Audi A3?
A faulty inner CV joint typically causes vibrations throughout the car during acceleration, which disappear when coasting. A faulty outer CV joint instead produces a clicking or knocking noise when making sharp turns.
Can I replace just the CV boot if the inner joint is still working?
Yes, if you catch a split boot early before dirt has entered or the grease has completely leaked out, you can replace just the CV boot to prolong the life of the joint.
Does the same inner CV joint fit both the left and right sides of an Audi A3 1.8 Tfsi Quattro?
This varies depending on the model year and gearbox. They are often identical, but on certain versions the length or mounting may differ. Always select your exact make, model and engine to be certain.
Why does my Audi A3 1.8 Tfsi Quattro vibrate under acceleration?
This is a classic symptom of a worn inner CV joint. When play develops within the joint, it creates an imbalance under load, which transmits as vibrations through the chassis.
Are mounting grease and clamps included when I buy an inner CV joint from you?
Yes, our complete inner CV joint kits always include the necessary specialist grease, circlips and CV boot clamps for a proper installation.
Is it difficult to replace the inner CV joint yourself?
It requires some mechanical experience and the correct tools, as the drive shaft usually needs to be disconnected from the gearbox. However, for a capable DIY mechanic with access to a lift or axle stands, it is entirely manageable.