Top 5 Subaru 2.4 Turbo Engine Problems & their Solutions in 2023!

Do you need to know the main Subaru 2.4 turbo engine problems?

Being prepared for these situations can be very beneficial, and that’s why we have prepared a comprehensive list of these problems.

While this is one of Subaru’s most reliable engines, it is not problem-free.

There are many common causes for the following problems. However, being prepared for them will save money on professional mechanics.

Top 5 Subaru 2.4 Turbo Engine Problems

2021 subaru 2.4 turbo engine problems

There are a set of problems that are the most common for the Subaru 2.4 L turbo engine.

Many people consider it a reliable vehicle if proper care and maintenance are implemented. It is essential to know the following drawbacks to be prepared for that.

1. Excessive oil consumption

According to some vehicles that work with this engine, excessive engine oil consumption could become a problem.

Specifically, this is not a vehicle that consumes too much engine oil due to a flaw in the engine design. Instead, the real problem seems to lie in the vehicle’s oil filter.

According to the opinion of some experts, the oil filter has a limited oil capacity since it is a somewhat small component.

So, bypass mode can hardly be avoided, as well as clogging of the oil filter itself.

Overheating problems and other mechanical damages could appear due to the lack of engine oil in different areas.

2. Problematic ignition

When it comes to some Subaru turbo engines, misfiring is another common situation that needs to be always considered.

There are different reasons this problem may appear, and the most common problems are tight exhaust valve clearances, pistons with faulty rings, or boost or vacuum leaks.

It is simply necessary to consider finding burnt valves if the cause of the problem is related to a tight valve.

It is also necessary to remember that misfiring is only one of the user’s inconveniences.

On many occasions, this inconvenience usually appears together with other problems in the engine, such as overheating.

3. Ringland’s drawbacks

When it comes to a Subaru 2 4 L or 2.5 L turbo engine, this problem also tends to be another of the most common problems that many people usually face during the lifetime of these engines.

It is possible to find three piston rings in this engine, which can become problematic and crack.

Of course, one or several small cracks are not a real problem from the beginning.

However, many of these cracks do not remain small over time. When these cracks expand, the engine could lose one or more rings.

All of that could lead to other related problems, such as some damage to the cylinder walls—all of those results in excessive exhaust smoke, loss of power, and smoke coming from the engine.

Related Exhaust: Best sounding exhaust for Toyota Tundra

4. Connecting rod bearing malfunction

These parts have a particular connection with the crankshaft of the vehicle.

When there is any kind of engine oil leakage, the connecting rod bearings are among the most affected set of parts.

That is why experts always recommend respecting the oil filter and engine oil change intervals to avoid this inconvenience.

In this case, the connecting rods can hit the cylinder walls when the connecting rod bearings fail.

This is precisely what can damage the engine, producing a hole in the engine block. Looking for engine oil leaks inside the vehicle is an excellent way to avoid all these problems that are very costly to repair.

5. Valve cover gasket problems

As we mentioned earlier, engine oil leaks are a problem for different engine parts.

Like other parts, the valve cover gasket is another part that wears out since it has a specific service life, and an oil leak on this part can be more than enough reason to decrease durability.

When this Subaru turbo engine has reached 100,000 miles of travel or ten years of use, engine oil leaks may start to appear somewhere.

Any user will note that a replacement of this part is required when the engine exhales too much smoke.

If smoke is detected from the engine, the user will need to look for an oil leak.

Subaru 2.4 Turbo Engine

Subaru’s 2 4 L turbo engine is used in different models of this vehicle manufacturer. That is why we find 260 horsepower along with 5600 revolutions per minute.

Per liter, this engine can offer 108 9 horsepower. So, we can also mention that the torque power is 375 Newton meters between 2000 and 4800 revolutions per minute.

Likewise, the torque is 276.59 feet pounds in the same range of revolutions per minute.

We find four cylinders with an actual displacement of 2387 cubic centimeters inside the engine.

We can consider a direct injection fuel system, four valves per cylinder, and a Boxer cylinder layout.

In addition, the engine oil capacity is 4.5 L while the coolant capacity is 8 7 L.

In this case, it is an engine usually found in different models of the last year of Subaru Outback.

Additionally, we can mention that the cylinder bore is 94 mm, while the cylinder stroke is 86 mm. Thus, the compression ratio is up to 10.6.

Finally, it should be noted that the type of distribution is DOHC.

Solutions for the Subaru 2.4 Turbo Engine Problems

subaru 2.4 turbo engine upgrades

We have found some beneficial solutions to the Subaru mentioned above 2.4L turbo engine problems. Although these are not definitive solutions, they are an excellent start and an excellent way to save money on expert labor.

Excessive oil consumption

It is recommended that the oil supply bolts be replaced and checked every 60,000 miles.

In addition, oil and oil filter changes should be performed as recommended in the vehicle owner’s manual.

This will help prevent excessive wear and deterioration of the engine due to a lack of lubrication.

Problematic ignition

Replacing defective piston rings is an excellent way to avoid ignition problems and failures.

It is recommended to detect ignition problems and failures as early as possible. In this way, the user will save a lot of money on future costly repairs.

Ringland’s drawbacks

It seems inconvenient to have a complete diagnosis of the vehicle, and it may also be necessary to check the engine for damage caused by this problem.

A simple solution is to machine the cylinder walls and fit a new piston.

Connecting rod bearing malfunction

The symptoms should be detected as early as possible to solve this problem.

This usually requires an inspection and diagnosis and skilled labor to repair the damaged areas.

Valve cover gasket problems

A simple valve cover gasket replacement can be as important as finding and repairing engine oil leaks.

All of that is usually more than enough, although you shouldn’t expect too much.

Subaru 2.0 Turbo Engine Reliability

Among all Subaru turbo engines, finding some genuinely reliable and others best avoided is possible.

Among all of them, Subaru’s 2.0-liter turbo engine has been labeled as one of this manufacturer’s most reliable turbo engines.

This Subaru turbo engine’s lifespan is one of the best positive aspects.

If the user performs the oil and oil filter change on time, the lifespan of this engine can go up to 50,000 miles at least.

So, this means that the user will obtain an extended service life before possible mechanical failures and problems start to appear.

In general, several reports and tests conducted on this Subaru turbo engine indicate a high level of reliability.

The driving experience and the reliability of engine operation are some of the most positive aspects that this Subaru turbo engine can provide to users.

However, it is necessary to consider that the overall lifespan of an engine can vary depending on several factors.

Subaru’s 2 0 L turbo engine offers a good experience with proper care and good maintenance.

Subaru Engine Replacement Cost

When replacing a Subaru engine, it is necessary to consider both the labor and the set of parts needed for the task.

When it comes to a used vehicle, the parts may require a budget of $3,500 to $4,000. However, the budget needed will be higher when it comes to a new engine.

This means that the user may require about $4,000 to $6,000 for the parts. Once the user has considered the budget for the parts, it is necessary to calculate the labor for the task.

Replacing a Subaru engine may require a budget of $1,500 to $3,000. The total labor cost for engine replacement can vary depending on a few factors.

One of the most important factors to consider is the task’s difficulty. As it becomes more challenging to perform a mechanical task, labor costs also increase.

The geographic area where the Subaru engine replacement is to be performed must also be considered.

In certain states, mechanical labor may be more or less expensive, and it is not usually a task that any amateur can perform.

Subaru 3.6 Engine Reliability

We can also consider the 3.6 L engine among the most reliable Subaru engines.

It is one of the engines implemented in the most significant vehicles provided by this vehicle manufacturer.

Compared to the 3.0 L engine, Subaru’s 3.6 L engine is more reliable due to the higher durability and responsiveness it can offer.

One of the critical aspects is the service life of this vehicle can exceed 300,000 km or 180,000 miles.

This is one of the reasons why many people have considered this engine one of the most reliable.

Specifically, this can be checked due to the excellent score of this engine on different tests.

In general, no design problems or faults are too severe for the performance of this engine.

Of course, to achieve maximum service life before mechanical failures start to appear, proper maintenance is required.

This means implementing specific care, replacement of parts and fluids, and responsible driving of the vehicle.

All that is more than enough to enjoy the reliability of dependability that the Subaru 3.6 L engine can provide.

Common But Crucial FAQs

1. Is a Subaru turbo engine efficient?

In general, many users of Subaru models claim that the turbo engines of this manufacturer are genuinely reliable. Some people have to face low annual repair costs.
Of course, for this, proper maintenance and care must be implemented.
In many cases, it is possible to obtain a useful life of 50,000 miles or more than six years of use before problems begin to appear.

The 2 4 L engine is among the most reliable and efficient among all Subaru turbo engines.
For this, users mustn’t modify these engines, as that could be more than enough to lose power and reliability.
It is also possible to find excellent fuel economy and adequate torque and horsepower. In other words, this is a vehicle engine that has an excellent design inside.

3. What are the problematic Subaru engines?

Subaru engines are highly reliable and provide excellent results to all their users. However, some engines are problematic and users are advised to avoid them.
Among the problematic Subaru models are the 2018 and 2019 CrossTrek. There is also the 2017 to 2019 Subaru Impreza.
In general, these vehicles presented problems with the onboard computer software, and some fuses and coils also needed to be replaced.

4. Does Subaru abandon turbo engines?

A short time ago, one of Subaru’s important figures explained the lack of turbo engines for the Subaru Forester, among other models.
Specifically, this Subaru model is in high demand, and that is why it had to be redesigned.
Anyway, this does not mean that Subaru has decided to abandon all turbo engines in its different models.
It is still possible to find many other Subaru vehicles with this engine type.

5. What is the service life of a Subaru engine?

Some users claim that this Subaru engine could last forever with proper care.
Not all Subaru models can provide the same lifespan on their engines, and most of them can provide a lifespan of 100,000 miles before problems appear.
Some models can even provide 200,000 miles and 300,000 miles on some occasions. The most important thing is to consider responsible vehicle use and maintenance at the right time.

6. What is the best Subaru engine?

The 2 4 L and 2 0 L turbo engines are among all Subaru engines’ most reliable and efficient.
Some models that have stood out are the 2012 and 2013 Subaru Impreza and Subaru CrossTrek.
It is also possible to find excellent results in the Subaru Forester from 2013 to 2014. Finally, the Subaru Outback 3.6 L from 2010 to 2012 is reliable.


Once the user knows what the main Subaru 2.4 turbo engine problems are, he will have the ability to deal better with all of them.

While this type of engine does have some problems, it is still one of the most reliable options for using a Subaru.

Also, knowing about these problems saves money on more costly repairs.