Common in turbocharged engines like the WRX; can be due to worn gaskets or seals.

Turbochargers can fail due to high stress and improper maintenance, leading to reduced power and efficiency.

Often caused by using lower octane fuel than recommended or issues with the ignition timing.

Can occur in various parts of the cooling system, including the radiator, hoses, or water pump, leading to overheating.

Can occur due to overheating or high engine stress, resulting in coolant and oil mixing and loss of compression.

A worn or broken timing belt/chain can lead to severe engine damage and misalignment of engine timing.

Dirty or clogged fuel injectors can cause poor engine performance and reduced fuel efficiency.

Ignition coils can fail, leading to misfires, rough idling, and difficulty starting the engine.

Faulty oxygen sensors can lead to poor fuel economy and increased emissions.

The 2018 Subaru Outback with a naturally aspirated engine has been known to have issues with high oil consumption, which could lead to engine damage if not monitored and maintained.

The timing chain in some Subaru engines can become noisy or even fail prematurely, leading to significant engine damage and costly repairs.

The cooling system, including the radiator and water pump, can develop leaks or fail, which can cause the engine to overheat.

Some Subaru engines are prone to head gasket leaks, which can lead to oil and coolant mixing and causing engine overheating or failure.

Misfires can occur due to faulty spark plugs or ignition coils, leading to poor engine performance and increased fuel consumption.

Issues with the fuel injectors or fuel pump can cause poor engine performance, stalling, or difficulty starting the engine.

Various engine sensors, such as the oxygen sensor or mass air flow sensor, can fail and cause the engine to run inefficiently or trigger the check engine light.

Oil can leak from the valve cover gaskets, leading to oil loss and potential engine damage if not addressed promptly.

Problems with the exhaust system, such as a clogged catalytic converter or exhaust leaks, can affect engine performance and emissions.

The 2018 Subaru WRX with a high-power engine is known for excessive oil consumption, which can lead to engine damage if not monitored and maintained properly.

The turbocharger in high-performance engines like the WRX can be prone to failure due to high stress, leading to reduced engine performance and potential costly repairs.

Direct-injection engines, such as the one in the WRX, can suffer from carbon buildup on the intake valves, causing rough idling, misfires, and reduced fuel efficiency.

Although Subaru has improved on this, earlier models were notorious for head gasket failures, and some issues may still persist in later models like the 2018 WRX.

High-performance engines generate a lot of heat, and the WRX's cooling system can sometimes struggle to keep up, leading to overheating issues.

High-revving engines like the WRX can experience rod bearing wear or failure, which can lead to severe engine damage if not addressed.

Fuel pumps and injectors in high-performance vehicles can sometimes fail prematurely, causing poor engine performance and starting issues.

Common in turbocharged engines like the WRX; can be due to worn gaskets or seals.

Turbochargers can fail due to high stress and improper maintenance, leading to reduced power and efficiency.

Often caused by using lower octane fuel than recommended or issues with the ignition timing.

Can occur in various parts of the cooling system, including the radiator, hoses, or water pump, leading to overheating.

Can occur due to overheating or high engine stress, resulting in coolant and oil mixing and loss of compression.

A worn or broken timing belt/chain can lead to severe engine damage and misalignment of engine timing.

Dirty or clogged fuel injectors can cause poor engine performance and reduced fuel efficiency.

Ignition coils can fail, leading to misfires, rough idling, and difficulty starting the engine.

Faulty oxygen sensors can lead to poor fuel economy and increased emissions.

Common in turbocharged engines like the WRX; can be due to worn gaskets or seals.

Turbochargers can fail due to high stress and improper maintenance, leading to reduced power and efficiency.

Often caused by using lower octane fuel than recommended or issues with the ignition timing.

Can occur in various parts of the cooling system, including the radiator, hoses, or water pump, leading to overheating.

Can occur due to overheating or high engine stress, resulting in coolant and oil mixing and loss of compression.

A worn or broken timing belt/chain can lead to severe engine damage and misalignment of engine timing.

Dirty or clogged fuel injectors can cause poor engine performance and reduced fuel efficiency.

Ignition coils can fail, leading to misfires, rough idling, and difficulty starting the engine.

Faulty oxygen sensors can lead to poor fuel economy and increased emissions.

The Subaru BRZ is known to have higher-than-average oil consumption, which could lead to frequent oil top-ups and potential engine damage if not monitored closely.

Some owners report engine knocking, especially during cold starts or under heavy load, which could indicate issues with the ignition system or fuel quality.

There have been recalls related to valve springs, which can fail and cause engine stalling or damage if not addressed.

Issues with the fuel pump can lead to poor engine performance, stalling, or difficulty starting the vehicle.

Coolant leaks from the radiator or hoses can lead to engine overheating, which can cause significant engine damage if not corrected promptly.

Problems with the timing chain tensioner can lead to a rattling noise in the engine and, if not fixed, potential catastrophic engine failure.

Some 2018 Subaru WRX models with a 4-cylinder engine have been known to consume oil at a higher rate than normal, which can lead to engine damage if not monitored and maintained.

The turbocharger in the WRX can sometimes fail, leading to reduced engine performance and potentially costly repairs.

Coolant leaks can occur in the engine, which may cause the engine to overheat and lead to significant damage if not addressed promptly.

Direct injection engines, like the one in the 2018 WRX, can suffer from carbon buildup on the intake valves, which can affect performance and fuel efficiency.

Subaru engines have a history of head gasket problems, which can lead to coolant and oil leaks and overheating issues.

Issues with the timing belt or chain can cause engine misfires or complete engine failure if they break or slip.

In some cases, the rod bearings in the engine can wear out prematurely, leading to knocking noises and potential engine failure if not repaired.

Problems with the fuel pump can cause the engine to run poorly or not start at all.

The Subaru BRZ is known to have higher-than-average oil consumption, which could lead to frequent oil top-ups and potential engine damage if not monitored closely.

Some owners report engine knocking, especially during cold starts or under heavy load, which could indicate issues with the ignition system or fuel quality.

There have been recalls related to valve springs, which can fail and cause engine stalling or damage if not addressed.

Issues with the fuel pump can lead to poor engine performance, stalling, or difficulty starting the vehicle.

Coolant leaks from the radiator or hoses can lead to engine overheating, which can cause significant engine damage if not corrected promptly.

Problems with the timing chain tensioner can lead to a rattling noise in the engine and, if not fixed, potential catastrophic engine failure.

The Subaru BRZ is known to have higher-than-average oil consumption, which could lead to frequent oil top-ups and potential engine damage if not monitored closely.

Some owners report engine knocking, especially during cold starts or under heavy load, which could indicate issues with the ignition system or fuel quality.

There have been recalls related to valve springs, which can fail and cause engine stalling or damage if not addressed.

Issues with the fuel pump can lead to poor engine performance, stalling, or difficulty starting the vehicle.

Coolant leaks from the radiator or hoses can lead to engine overheating, which can cause significant engine damage if not corrected promptly.

Problems with the timing chain tensioner can lead to a rattling noise in the engine and, if not fixed, potential catastrophic engine failure.

Common in turbocharged engines like the WRX; can be due to worn gaskets or seals.

Turbochargers can fail due to high stress and improper maintenance, leading to reduced power and efficiency.

Often caused by using lower octane fuel than recommended or issues with the ignition timing.

Can occur in various parts of the cooling system, including the radiator, hoses, or water pump, leading to overheating.

Can occur due to overheating or high engine stress, resulting in coolant and oil mixing and loss of compression.

A worn or broken timing belt/chain can lead to severe engine damage and misalignment of engine timing.

Dirty or clogged fuel injectors can cause poor engine performance and reduced fuel efficiency.

Ignition coils can fail, leading to misfires, rough idling, and difficulty starting the engine.

Faulty oxygen sensors can lead to poor fuel economy and increased emissions.

Some 2018 Subaru WRX models with a 4-cylinder engine have been known to consume oil at a higher rate than normal, which can lead to engine damage if not monitored and maintained.

The turbocharger in the WRX can sometimes fail, leading to reduced engine performance and potentially costly repairs.

Coolant leaks can occur in the engine, which may cause the engine to overheat and lead to significant damage if not addressed promptly.

Direct injection engines, like the one in the 2018 WRX, can suffer from carbon buildup on the intake valves, which can affect performance and fuel efficiency.

Subaru engines have a history of head gasket problems, which can lead to coolant and oil leaks and overheating issues.

Issues with the timing belt or chain can cause engine misfires or complete engine failure if they break or slip.

In some cases, the rod bearings in the engine can wear out prematurely, leading to knocking noises and potential engine failure if not repaired.

Problems with the fuel pump can cause the engine to run poorly or not start at all.

The 2018 Subaru WRX with a high-power engine is known for excessive oil consumption, which can lead to engine damage if not monitored and maintained properly.

The turbocharger in high-performance engines like the WRX can be prone to failure due to high stress, leading to reduced engine performance and potential costly repairs.

Direct-injection engines, such as the one in the WRX, can suffer from carbon buildup on the intake valves, causing rough idling, misfires, and reduced fuel efficiency.

Although Subaru has improved on this, earlier models were notorious for head gasket failures, and some issues may still persist in later models like the 2018 WRX.

High-performance engines generate a lot of heat, and the WRX's cooling system can sometimes struggle to keep up, leading to overheating issues.

High-revving engines like the WRX can experience rod bearing wear or failure, which can lead to severe engine damage if not addressed.

Fuel pumps and injectors in high-performance vehicles can sometimes fail prematurely, causing poor engine performance and starting issues.

The Subaru BRZ is known to have higher-than-average oil consumption, which could lead to frequent oil top-ups and potential engine damage if not monitored closely.

Some owners report engine knocking, especially during cold starts or under heavy load, which could indicate issues with the ignition system or fuel quality.

There have been recalls related to valve springs, which can fail and cause engine stalling or damage if not addressed.

Issues with the fuel pump can lead to poor engine performance, stalling, or difficulty starting the vehicle.

Coolant leaks from the radiator or hoses can lead to engine overheating, which can cause significant engine damage if not corrected promptly.

Problems with the timing chain tensioner can lead to a rattling noise in the engine and, if not fixed, potential catastrophic engine failure.

The 2018 Subaru WRX with a high-power engine is known for excessive oil consumption, which can lead to engine damage if not monitored and maintained properly.

The turbocharger in high-performance engines like the WRX can be prone to failure due to high stress, leading to reduced engine performance and potential costly repairs.

Direct-injection engines, such as the one in the WRX, can suffer from carbon buildup on the intake valves, causing rough idling, misfires, and reduced fuel efficiency.

Although Subaru has improved on this, earlier models were notorious for head gasket failures, and some issues may still persist in later models like the 2018 WRX.

High-performance engines generate a lot of heat, and the WRX's cooling system can sometimes struggle to keep up, leading to overheating issues.

High-revving engines like the WRX can experience rod bearing wear or failure, which can lead to severe engine damage if not addressed.

Fuel pumps and injectors in high-performance vehicles can sometimes fail prematurely, causing poor engine performance and starting issues.

The 2018 Subaru WRX with a high-power engine is known for excessive oil consumption, which can lead to engine damage if not monitored and maintained properly.

The turbocharger in high-performance engines like the WRX can be prone to failure due to high stress, leading to reduced engine performance and potential costly repairs.

Direct-injection engines, such as the one in the WRX, can suffer from carbon buildup on the intake valves, causing rough idling, misfires, and reduced fuel efficiency.

Although Subaru has improved on this, earlier models were notorious for head gasket failures, and some issues may still persist in later models like the 2018 WRX.

High-performance engines generate a lot of heat, and the WRX's cooling system can sometimes struggle to keep up, leading to overheating issues.

High-revving engines like the WRX can experience rod bearing wear or failure, which can lead to severe engine damage if not addressed.

Fuel pumps and injectors in high-performance vehicles can sometimes fail prematurely, causing poor engine performance and starting issues.

Common in turbocharged engines like the WRX; can be due to worn gaskets or seals.

Turbochargers can fail due to high stress and improper maintenance, leading to reduced power and efficiency.

Often caused by using lower octane fuel than recommended or issues with the ignition timing.

Can occur in various parts of the cooling system, including the radiator, hoses, or water pump, leading to overheating.

Can occur due to overheating or high engine stress, resulting in coolant and oil mixing and loss of compression.

A worn or broken timing belt/chain can lead to severe engine damage and misalignment of engine timing.

Dirty or clogged fuel injectors can cause poor engine performance and reduced fuel efficiency.

Ignition coils can fail, leading to misfires, rough idling, and difficulty starting the engine.

Faulty oxygen sensors can lead to poor fuel economy and increased emissions.

The Subaru BRZ is known to have higher-than-average oil consumption, which could lead to frequent oil top-ups and potential engine damage if not monitored closely.

Some owners report engine knocking, especially during cold starts or under heavy load, which could indicate issues with the ignition system or fuel quality.

There have been recalls related to valve springs, which can fail and cause engine stalling or damage if not addressed.

Issues with the fuel pump can lead to poor engine performance, stalling, or difficulty starting the vehicle.

Coolant leaks from the radiator or hoses can lead to engine overheating, which can cause significant engine damage if not corrected promptly.

Problems with the timing chain tensioner can lead to a rattling noise in the engine and, if not fixed, potential catastrophic engine failure.

The 2018 Subaru WRX with a high-power engine is known for excessive oil consumption, which can lead to engine damage if not monitored and maintained properly.

The turbocharger in high-performance engines like the WRX can be prone to failure due to high stress, leading to reduced engine performance and potential costly repairs.

Direct-injection engines, such as the one in the WRX, can suffer from carbon buildup on the intake valves, causing rough idling, misfires, and reduced fuel efficiency.

Although Subaru has improved on this, earlier models were notorious for head gasket failures, and some issues may still persist in later models like the 2018 WRX.

High-performance engines generate a lot of heat, and the WRX's cooling system can sometimes struggle to keep up, leading to overheating issues.

High-revving engines like the WRX can experience rod bearing wear or failure, which can lead to severe engine damage if not addressed.

Fuel pumps and injectors in high-performance vehicles can sometimes fail prematurely, causing poor engine performance and starting issues.

The Subaru BRZ is known to have higher-than-average oil consumption, which could lead to frequent oil top-ups and potential engine damage if not monitored closely.

Some owners report engine knocking, especially during cold starts or under heavy load, which could indicate issues with the ignition system or fuel quality.

There have been recalls related to valve springs, which can fail and cause engine stalling or damage if not addressed.

Issues with the fuel pump can lead to poor engine performance, stalling, or difficulty starting the vehicle.

Coolant leaks from the radiator or hoses can lead to engine overheating, which can cause significant engine damage if not corrected promptly.

Problems with the timing chain tensioner can lead to a rattling noise in the engine and, if not fixed, potential catastrophic engine failure.

Some 2018 Subaru WRX models with a 4-cylinder engine have been known to consume oil at a higher rate than normal, which can lead to engine damage if not monitored and maintained.

The turbocharger in the WRX can sometimes fail, leading to reduced engine performance and potentially costly repairs.

Coolant leaks can occur in the engine, which may cause the engine to overheat and lead to significant damage if not addressed promptly.

Direct injection engines, like the one in the 2018 WRX, can suffer from carbon buildup on the intake valves, which can affect performance and fuel efficiency.

Subaru engines have a history of head gasket problems, which can lead to coolant and oil leaks and overheating issues.

Issues with the timing belt or chain can cause engine misfires or complete engine failure if they break or slip.

In some cases, the rod bearings in the engine can wear out prematurely, leading to knocking noises and potential engine failure if not repaired.

Problems with the fuel pump can cause the engine to run poorly or not start at all.

The Subaru BRZ is known to have higher-than-average oil consumption, which could lead to frequent oil top-ups and potential engine damage if not monitored closely.

Some owners report engine knocking, especially during cold starts or under heavy load, which could indicate issues with the ignition system or fuel quality.

There have been recalls related to valve springs, which can fail and cause engine stalling or damage if not addressed.

Issues with the fuel pump can lead to poor engine performance, stalling, or difficulty starting the vehicle.

Coolant leaks from the radiator or hoses can lead to engine overheating, which can cause significant engine damage if not corrected promptly.

Problems with the timing chain tensioner can lead to a rattling noise in the engine and, if not fixed, potential catastrophic engine failure.