Removing and installing underbody cover (rear): Audi A6/A7 C7
Step-by-step removing and installing underbody cover (rear) for the Audi A6/A7 C7: 8 steps. What to remove, in what order, and what to check after.
The rear underbody cover on the Audi A6/A7 C7 (4G), with the related codes listed below, is a short job that still trips people up because it hooks into the centre cover. There are two layouts shown, with the fixings in slightly different places, but the pattern is the same: remove the bolts at the edges, undo the nut at the centre cover, then pull the rear section back out of its fastener and lift it away. Refitting is the reverse, making sure the front edge goes properly into the fastener before the bolts go in. It is worth checking the nuts and bolts for corrosion while the panel is off and renewing any that are damaged, rather than forcing a seized fixing into plastic.
🧭 Before you start
Undo the bolts holding the rear cover and the nut at the centre cover. Pull the rear cover back out of its fastener and detach it. Refit by engaging the cover in the fastener first, then fitting the nut and bolts.
Fits: Audi A6/A7 C7 (4G, 2011–2018); platform code 4X
Don't miss
- Two fixing layouts exist; identify which yours matches before undoing anything.
- Pull the cover towards the rear to free it from the fastener.
- On refit, engage the fastener before fitting the nut and bolts.
- Renew corroded or damaged fixings rather than forcing them, as general practice.
Written for this job from the workshop steps below · TorqFix editorial.
📋 Procedure
- Remove bolts (1, 3, 6).
- Unscrew nut (5) at cover (centre) (4).
- Pull cover (rear) (2) out of fastener towards rear.
- Detach cover (rear).
- Unscrew nut (5) and bolts (1 and 6).
- Unscrew nut (3) at cover (centre) (4).
- Pull cover (rear) (2) out of fastener towards rear.
- Detach cover (rear).
Other AUDI procedures
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- Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
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- Removing gearbox - vehicles with 2.7 ltr. TDI engine – Audi · 2 torque figures
- Removing and installing electric vacuum pump for brakes (RS 5) · 3 torque figures
- Removing and installing camshafts and camshaft adjusters · 3 torque figures
- Installing engine - vehicles without hybrid drive – Audi 2.0 · 1 torque figures
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Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
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The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.