Audi A5 Coupe Timing Belt: Intervals, Fitment & Warning Signs

On the A5, the hydraulic timing chain tensioner's check valves genuinely leak down oil pressure while parked, causing a well-known cold-start rattle.

Illustration for editorial purposes

OEM Part Number: 06K-109-158-BP

Audi A5 Coupe Timing Belt: The Part Where Missing a Deadline Gets Expensive

Few maintenance items on the Audi A5 Coupe carry as much downside risk for skipping them. On the engines where this component fails, the consequences typically extend well beyond the part itself, which is exactly why sticking to the schedule matters more here than almost anywhere else on the car.

Audi A5 Coupe Timing Belt: Generations, S5/RS5 & Engines: Belt or Chain

Confirmed: Every A5 Coupe Uses a Chain, Not a Belt — Audi A5 Coupe Timing Belt

Some early 2.0 TFSI engines (pre-2013 in particular) developed a reputation for premature timing chain tensioner wear, leading to chain "rattle" on cold start — worth being aware of if buying an early F5 example, even though Audi rated the chain as "good for life" under normal conditions. If you hear rattling on startup that clears after a few seconds, get the tensioner and chain condition checked by a specialist rather than assuming it's nothing.

Audi A5 Coupe Timing Belt: What It Does

The Audi A5 Coupe's timing belt or chain keeps the engine's camshafts and crankshaft rotating in precise synchronisation, ensuring valves open and close at exactly the right moment relative to piston position. On many engines, this is what's known as an "interference" design — if the belt fails, the pistons and valves can collide, causing serious internal engine damage.

A Genuinely Well-Documented, Real Issue Worth Knowing About — Audi A5 Coupe Timing Belt

If you're hearing a brief rattle on cold start-up, this is genuinely worth knowing on the EA888 2.0 TFSI engine: the hydraulic timing chain tensioner relies on oil pressure to keep the chain properly taut, and internal check valves gradually leak this pressure down while the car sits parked, causing a characteristic one-to-three second rattle when the engine is first started. It's genuinely worth using your phone to record the rattle the next time it happens, since this kind of brief, intermittent noise can be difficult to reproduce on demand for a mechanic.

It's also genuinely worth knowing a genuinely damning finding: Audi's own internal guidance has reportedly instructed dealers not to replace chains or tensioners under warranty for this kind of rattle unless the noise is constant, rather than just present briefly on cold start — worth being aware of this specific threshold if you're pursuing a warranty repair.

Audi A5 Coupe Timing Belt: Watch: Replacing It

This covers the belt-driven pre-2013 diesel/early petrol. The 2013+ range is entirely chain-driven and doesn't need this procedure — see confirmation above.

Audi A5 Coupe Timing Belt: Warning Signs, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Timing Belt Guide for symptoms to watch for, confirming fitment against your VIN, and which aftermarket brands are worth trusting.

More Audi Timing Belt

The same part, covered across other Audi models.

• Audi A1 Timing Belt
• Audi A3 Timing Belt
• Audi A4 Timing Belt
• Audi A6 Timing Belt
• Audi Q2 Timing Belt
• Audi Q3 Timing Belt
• Audi Q5 Timing Belt