The complexity of a W-shaped 12-cylinder engine can lead to potential oil leaks from various gaskets and seals.

The twin-turbocharged system may experience failures such as turbo lag, reduced boost pressure, or complete failure of the turbochargers.

The dense configuration of a W12 engine can cause overheating issues, especially under high performance or inadequate cooling system maintenance.

The intricate timing chain system in a W12 engine can stretch over time, leading to poor engine performance or even catastrophic engine damage if it breaks.

The high-performance nature of this engine requires a precise fuel delivery system, which can develop issues such as clogged injectors or fuel pump failures.

As a LEV II (Low Emission Vehicle) engine, it relies heavily on catalytic converters and other emission control devices that can fail and cause performance and legal issues.

The complexity of a W12 engine and the high number of cylinders can lead to increased likelihood of spark plug or ignition coil failures.

With the intricate design of the W12 engine, there are more points of potential failure in the cooling system, leading to leaks and overheating.

Due to the engine's complexity and performance characteristics, regular maintenance and repairs can be more costly compared to simpler engines.

High-performance engines like the Bentley's W12 often face issues with oil leaks due to high temperatures and pressures, which can cause gaskets and seals to wear out faster.

The twin-turbocharged setup can be prone to turbo failure, often due to oil starvation, heat damage, or bearing failure.

With multiple cylinders, the ignition system is complex and may face issues with misfires or coil pack failures.

High-performance engines generate a lot of heat, which can lead to cooling system failures including radiator leaks, thermostat failures, or water pump issues.

Direct injection engines like this one can suffer from carbon build-up on the intake valves, leading to reduced performance and efficiency.

Over time, the timing chain can stretch or wear, potentially leading to engine timing issues and poor performance.

The catalyst in the emissions system can become clogged or fail, leading to reduced performance and increased emissions.

High-tech engines have numerous sensors that can fail, including oxygen sensors, MAF sensors, and camshaft position sensors.