🟡 Range Rover Sport SDV6 timing chain failure

Rattling noise from the engine, particularly on cold start. The Land Rover 3.0 SDV6 diesel engine has a known timing chain weakness affecting the timing chain tensioner and guides. The fault is progressive — early detection through oil analysis and regular servicing with 0W-30 oil can slow the deterioration. A full timing chain replacement on this engine is a major undertaking requiring engine removal in many cases.