2015 AUDI S8 CHJA/HZB (4H)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• High complexity of air suspension components can lead to failures
• Potential issues with timing chain tensioners in early D4 engines

First checks

• Inspect adaptive air suspension and electronic systems
• Check for oil leaks around turbochargers and valve covers
• Verify transmission fluid condition and software updates

Avant de remplacer des pièces

• 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

• The 2015 Audi S8 D4 car is equipped mainly with the 4.0L twin-turbo V8 engine in different tunes based on market emissions and regulations.
• Oil capacity includes service refill with oil filter; use Audi approved fluids for warranty and longevity.
• Market variations exist, e.g., US versions may have slight power and emission differences.