The 2013 Buick Regal with the LHU engine is known for higher-than-average oil consumption, which may require more frequent oil top-ups.

The LHU engine has been reported to have timing chain problems, which can lead to engine misfires or severe engine damage if not addressed promptly.

This model features a turbocharged engine, and there have been reports of turbocharger failures that can result in reduced engine performance and costly repairs.

Direct-injection engines like the LHU can experience carbon buildup on the intake valves, leading to rough idling, poor acceleration, and reduced fuel efficiency.

Some owners have reported issues with coolant leaks, which can cause overheating and potential engine damage if not repaired.

Faulty fuel injectors can lead to poor engine performance, increased emissions, and reduced fuel economy.

The 2013 Buick Regal with the LHU engine is known for higher-than-average oil consumption, which may require more frequent oil top-ups.

The LHU engine has been reported to have timing chain problems, which can lead to engine misfires or severe engine damage if not addressed promptly.

This model features a turbocharged engine, and there have been reports of turbocharger failures that can result in reduced engine performance and costly repairs.

Direct-injection engines like the LHU can experience carbon buildup on the intake valves, leading to rough idling, poor acceleration, and reduced fuel efficiency.

Some owners have reported issues with coolant leaks, which can cause overheating and potential engine damage if not repaired.

Faulty fuel injectors can lead to poor engine performance, increased emissions, and reduced fuel economy.

The 2013 Buick Regal with the LHU engine is known for higher-than-average oil consumption, which may require more frequent oil top-ups.

The LHU engine has been reported to have timing chain problems, which can lead to engine misfires or severe engine damage if not addressed promptly.

This model features a turbocharged engine, and there have been reports of turbocharger failures that can result in reduced engine performance and costly repairs.

Direct-injection engines like the LHU can experience carbon buildup on the intake valves, leading to rough idling, poor acceleration, and reduced fuel efficiency.

Some owners have reported issues with coolant leaks, which can cause overheating and potential engine damage if not repaired.

Faulty fuel injectors can lead to poor engine performance, increased emissions, and reduced fuel economy.

The LHU engine in the 2011 Buick Regal, being an aluminum block engine, can sometimes develop oil leaks at the valve cover gasket, oil pan gasket, or timing cover.

The LHU engine is turbocharged, and problems such as turbo lag, reduced power, or failure can occur due to issues like oil contamination, wear, or insufficient lubrication.

Due to the SIDI (Spark Ignition Direct Injection) system, these engines are prone to carbon buildup on the intake valves, which can lead to rough idling, misfires, and reduced fuel efficiency.

Over time, the timing chain can stretch or wear out, leading to a noisy engine, poor performance, or even engine failure if not addressed.

The aluminum construction of the engine can make it susceptible to coolant leaks from places like the water pump, radiator, or hoses, which can lead to overheating.

Direct injection systems can sometimes suffer from clogged or malfunctioning fuel injectors, leading to rough running, poor acceleration, and increased emissions.

The high-pressure fuel pump necessary for direct injection can fail, leading to issues such as hard starting, stalling, or a complete loss of power.

Due to potential issues with the cooling system (like a failing thermostat or water pump), the engine can overheat, leading to potential head gasket failure or warped cylinder heads.

Sensors and electronic components, such as the camshaft position sensor or mass airflow sensor, can fail, leading to engine performance issues and check engine light warnings.

The 2013 Buick Regal with the LHU engine is known for higher-than-average oil consumption, which may require more frequent oil top-ups.

The LHU engine has been reported to have timing chain problems, which can lead to engine misfires or severe engine damage if not addressed promptly.

This model features a turbocharged engine, and there have been reports of turbocharger failures that can result in reduced engine performance and costly repairs.

Direct-injection engines like the LHU can experience carbon buildup on the intake valves, leading to rough idling, poor acceleration, and reduced fuel efficiency.

Some owners have reported issues with coolant leaks, which can cause overheating and potential engine damage if not repaired.

Faulty fuel injectors can lead to poor engine performance, increased emissions, and reduced fuel economy.

DBS systems can occasionally fail to engage properly, leading to reduced braking efficiency in emergency situations.

In-Line engines with variable valve timing, like the LTG, can experience timing chain wear, causing performance issues or engine damage.

Direct Injection engines are prone to fuel injector problems, leading to poor fuel economy and reduced engine performance.

Direct Injection engines (especially those running on E85) can suffer from carbon buildup on intake valves, causing rough idling and reduced power.

The LTG engine is turbocharged, which can lead to potential turbocharger failure if not properly maintained, resulting in power loss and increased emissions.

Engines with direct injection often have high-pressure fuel pump issues, causing starting problems and poor performance.

The LTG engine's cooling system can be prone to leaks or failures, potentially leading to overheating and significant engine damage.

The 2013 Buick Regal with the LHU engine is known for higher-than-average oil consumption, which may require more frequent oil top-ups.

The LHU engine has been reported to have timing chain problems, which can lead to engine misfires or severe engine damage if not addressed promptly.

This model features a turbocharged engine, and there have been reports of turbocharger failures that can result in reduced engine performance and costly repairs.

Direct-injection engines like the LHU can experience carbon buildup on the intake valves, leading to rough idling, poor acceleration, and reduced fuel efficiency.

Some owners have reported issues with coolant leaks, which can cause overheating and potential engine damage if not repaired.

Faulty fuel injectors can lead to poor engine performance, increased emissions, and reduced fuel economy.

The 2012 Buick Regal with the LHU in-line engine is known to have issues with excessive oil consumption, which can lead to engine damage if not addressed promptly.

Premature wear of the timing chain is a common problem, which can result in poor engine performance or even engine failure if the chain breaks.

The turbocharger in this engine model can fail, leading to a loss of power and increased exhaust emissions.

Problems with the fuel injectors can cause rough idling, misfires, and reduced fuel efficiency.

Coolant leaks are common in this model, which can cause the engine to overheat if not repaired.

Carbon buildup on the intake valves is a frequent issue, leading to rough idling, reduced performance, and poor fuel economy.

Some Buick Regal LTG engines have been reported to consume more oil than usual, which could lead to engine damage if not monitored and maintained properly.

The turbocharger in the LTG engine can sometimes fail, leading to reduced power and performance issues.

Premature wear of the timing chain can occur, which may result in the need for early replacement to avoid engine damage.

Direct injection engines like the LTG can suffer from carbon buildup on the intake valves, which can affect performance and fuel efficiency.

There have been instances of coolant leaks in the LTG engine, potentially leading to overheating and engine damage if not addressed promptly.

The high-pressure fuel pump can fail, leading to poor engine performance and difficulty starting the engine.