The Audi A8 with an 8-cylinder engine is known to consume more oil than usual. Owners may need to monitor oil levels frequently and top up more often.

Direct injection engines like those in the A8 can suffer from carbon buildup on the intake valves, leading to performance issues and rough idling.

This model may experience timing chain tensioner issues, which can cause a rattling noise on startup and potentially lead to engine damage if not addressed.

The engine can be prone to coolant leaks, which may result from failing seals or hoses, leading to overheating if not repaired.

If equipped with a turbocharger, the A8's turbo can experience issues such as oil leaks, worn bearings, or failure, resulting in reduced performance and efficiency.

The fuel injectors in the A8 can become clogged or fail, leading to misfires, poor fuel economy, and reduced engine performance.

Given the specific emissions standards, components like the catalytic converter or EGR valve may fail, causing the check engine light to turn on and potentially affecting the vehicle's ability to pass emissions tests.

Common in Audi A8s due to aging gaskets and seals, especially around the valve covers and oil pan.

The timing chain tensioners can wear out prematurely, causing noise and potentially severe engine damage.

DPF can become clogged, leading to reduced engine performance and increased emissions.

Exhaust Gas Recirculation valves can get clogged with soot, affecting engine efficiency and emissions.

Diesel engines can suffer from fuel injector failures, leading to poor engine performance and increased fuel consumption.

Turbochargers can wear out or fail, causing loss of power and increased exhaust smoke.

Diesel engines rely on glow plugs for cold starts, and failures can lead to starting problems and misfires.

Radiator and hoses can develop leaks, leading to overheating and potential engine damage.

Carbon deposits can form in the intake manifold, reducing airflow and engine performance.

This sensor can fail, causing the engine to stall or not start at all.

The Audi A8 with an 8-cylinder engine is known to consume more oil than usual. Owners may need to monitor oil levels frequently and top up more often.

Direct injection engines like those in the A8 can suffer from carbon buildup on the intake valves, leading to performance issues and rough idling.

This model may experience timing chain tensioner issues, which can cause a rattling noise on startup and potentially lead to engine damage if not addressed.

The engine can be prone to coolant leaks, which may result from failing seals or hoses, leading to overheating if not repaired.

If equipped with a turbocharger, the A8's turbo can experience issues such as oil leaks, worn bearings, or failure, resulting in reduced performance and efficiency.

The fuel injectors in the A8 can become clogged or fail, leading to misfires, poor fuel economy, and reduced engine performance.

Given the specific emissions standards, components like the catalytic converter or EGR valve may fail, causing the check engine light to turn on and potentially affecting the vehicle's ability to pass emissions tests.