2017 AUDI S7 CGWB/CGWC (4G)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Carbon build-up on intake valves due to direct injection
• Timing chain tensioner wear (rare)

First checks

• Inspect timing chain and tensioner noise
• Check turbocharger boost performance and wastegate functions

Before replacing parts

• Save fault codes and freeze-frame data before clearing anything.
• Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
• Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.

Important notes

• Global 2017 S7 generally uses the V6 TFSI engine; diesel S7 variants were limited or unavailable in some markets.
• Engine oil capacity includes filter change; use VW/Audi approved synthetic oils to maintain warranty and engine health.