What Causes the Clicking Noise When an Audi Starts Moving?

[ValerieMarie]

A clicking noise when an Audi starts moving may be caused by the following reasons: 1. Hydraulic lifters: Air entering the hydraulic lifters due to low oil pressure or wear in the lifters themselves. 2. Valve clearance: Excessive valve clearance caused by wear in the valve rocker arms. 3. Dirty throttle body: Accumulation of sludge and carbon deposits leading to a dirty throttle body. 4. Carbon canister purge valve operation sound: This is a normal sound and the vehicle can continue to be used. If the sound is too loud, it is recommended to have it checked at an authorized service center. 5. Three-way catalytic converter: A 'clicking' sound within the first half minute after a cold start, which then disappears, is usually due to the expansion of the three-way catalytic converter as it heats up.

[VonAurora]

I've been driving an Audi A4 for several years, and recently I keep hearing a clunking sound when starting off, which makes me a bit nervous. It might be due to loose chassis suspension, like minor collision sounds caused by aging front suspension arms or shock absorbers. Such issues are common in Audi models because daily bumps and wear can lead to abnormal noises. Another possibility is a damaged engine mount. If the mount isn't securely fixed, it can wobble and produce a clunking sound during initial acceleration. A fellow car enthusiast I know once faced a similar situation and delayed the inspection, only to find out the mount had cracked and needed a complete replacement, costing a hefty sum. My advice is not to wait—take your car to a professional repair shop immediately to check the suspension and mounts. Small issues with Audi's precision components can easily escalate if left unattended.

[AlejandroDella]

Buddy, that 'clunk' sound when your Audi starts is most likely due to issues with the transmission or shock absorbers. I've seen many cases where dual-clutch transmissions make that gear friction noise during low-speed starts, especially in older Audi A3 or Q5 models. It could also be the sound of loose springs or connecting rods hitting the chassis. Take it to a repair shop and have the mechanic tighten things up with tools or replace the faulty part - it's an easy fix. If you delay, the noise will get worse and end up damaging your car more while increasing fuel consumption.

[ORose]

My Audi Q3 also made that clunking sound when starting last year, which was quite alarming. My son helped check and said it might be due to loose brake calipers or worn-out chassis bushings causing friction noises during initial movement. Such abnormal noises are not just annoying but could also affect driving safety – imagine if it suddenly seized while driving! I immediately took the car to the dealership. After inspection, they replaced the aged components, and now it's quiet. I suggest you address this promptly instead of driving nervously for a month like I did before getting it fixed.

[NathanLynn]

The abnormal noise is noticeable during racing. The initial 'clunk' sound from an Audi might indicate issues with the driveshaft or differential, caused by friction at the connection points when the engine delivers power. Based on my experience with modified cars, insufficient chassis reinforcement or loose old components can lead to this, severely affecting handling and acceleration feel. Immediate inspection is necessary; otherwise, long-term damage to the transmission could result in high repair costs.