Subaru Engines ❤️ Everything you need to know today (2023)

althoughSubaruIt's not the most popular automaker in the world; In fact, it ranks 22nd among all car manufacturers and most motorists would find it hard to think of 22 different car manufacturers, producing some reliable and popular cars. Subaru engines in particular are a big draw for a certain segment of drivers.SubaruIt usually uses what is called a boxer engine. The boxer engine has clear advantages and disadvantages compared to any other type of engine, but it does have a fan base of drivers who genuinely prefer the performance and reliability it produces over others.

Car repairs are expensive.

Let's take a look at the engines that Subaru offers and find out what makes them so popular, what problems they have, and whether they are worth buying.mmm subarubased on the engine first.

Subaru Engines ❤️ Everything you need to know today (2)

Motor-Subaru Boxer

Subaru introduced the boxer engine in the mid-1960s. Today this applies to all vehicles.Subaruproduces is powered by the same engine, although of course they are available in different types and sizes and can also offer different levels of performance. In case you're wondering, it gets its name from the boxer due to the horizontal movement of the pistons. Since they're facing each other, it's like two boxing gloves coming together to throw a punch.

A boxer engine is a flat engine. Not all boxer engines are boxer engines, but all boxer engines are flat engines. The pistons are located on both sides of the central crankshaft. As the opposing pistons move in and out of the cylinders, they balance each other. This is different from your standard engine, which may be V-shaped, for example. In one of these boxer engines, the opposing pistons can balance each other, which in turn reduces vibration and overall engine wear. For this reason, a boxer engine runs smoother and lasts longer than a standard engine.

In addition to this unique design, there are advantages to choosing a boxer engine.


A Subaru boxer engine is smaller than something like a big-block V8. Because the engine is compact and lightweight and the design is more symmetrical, not only in the design but also in the way it fits into your vehicle, the power it can generate is a bit smoother. This means you have a more direct power delivery and your vehicle's acceleration is smoother too. If you've ever sat in a car with some kind of monster V8 or V12 engine and felt it come to life when you hit the gas, you won't have the same experience driving a boxer. engine. Instead of taking it that way; you just slide right in at higher speeds.

acute operation

Due to the size, weight and location of a Subaru boxer engine in your vehicle, it has a low center of gravity. This, in turn, makes your vehicle more capable of cornering with a higher degree of stability. Also, you drive more comfortably and the car is generally more responsive. This may mean better tuning what you ask the car and how it responds to you. This can mean you'll be better able to avoid accidents and hazards on the road.


As we said before, the whole design is more balanced because the pistons move back and forth instead of up and down or at an angle. The entire engine is in-line with the driveline, which in turn means better power transfer from one to the other. Take a look at how other non-Subaru engines are built and installed in vehicles. If they are arranged transversely, additional components in your engine are required to transfer the power generated by the engine to the movement produced by your car.

Plus, with all-aluminum construction and a smaller, more compact design, your engine has to work less to deliver better performance. This is how a boxer engine can save more fuel than a larger, bulkier engine. Instead of the actual effort that goes into hauling that huge engine around and keeping it running properly, the engine is better able to transfer power to the entire vehicle, making it run smoother and more efficiently.

In general, you'll see less friction and less vibration with a boxer engine, which means more efficient overall performance. Less engine wear and therefore better fuel consumption.


We've said this before about the vehicle's handling and efficiency, but due to a Subaru's low center of gravity due to a flat boxer engine, it means the whole vehicle is more balanced and compact. All of this translates into a more responsive and safer vehicle. Operation is naturally faster because it doesn't carry extra bulk and doesn't have to work the engine harder to do the same work as more traditional engines.

What most people don't realize is that if you're in an accident with a boxer engine, your chances of sustaining less damage are much higher. Think about how a traditional motorcycle frontal crash works: a V-shaped engine in the center of your vehicle will be pushed into the cabin of the car if the accident is severe enough. This will destroy much of the vehicle and can cause serious injury.

Due to the size and design of a boxer engine, the engine itself is pushed underground in the event of a hard impact. It's extremely difficult to push a Subaru boxer engine into the vehicle's cabin, but doing so requires a freak and highly unusual accident. This means that if the worst were to happen, the driver and passengers of the Subaru would be in a much better position to avoid injury. This theory is confirmed when looking at Subaru's performance in crash safety tests.

O motorbokser Subaru FA24

For the 2020 Subaru Outback, Ascent and Legacy models, Subaru introduced a 2.4-liter turbocharged engine. The code name for this was FA24. These engines have proven to be extremely powerful and reliable and are the latest models. Some improvements over previous models include direct fuel injection compared to the older port injection that previous models had. Because it is now direct fuel injected, a more precise fuel-air mixture can be used in the engine, which in turn increases fuel efficiency and power. It also reduces the temperature of the engine, making it run better on several different levels.

Subaru introduced a few other technical improvements to the engine, including things like thicker cylinder walls, larger connecting rods, improved cylinder heads to reduce turbulence and improve airflow, etc. All these little details made the new Subaru engines work incredibly well. The bottom line is that when you compare something like the Subaru Ascent SUV to a competitor with a V6 engine, the Ascent actually has more power and, as a result, more torque. It will also be more fuel efficient.

How much power does the Subaru 2.4-liter four-cylinder turbo engine produce?

If you're looking for a Subaru Outback XT for the Subaru Ascent with this new FA24 engine, you'll experience 260bhp and 277Nm of torque. This produces 23 mpg in the city and 30 mpg on the highway, for a combined rate of 26 mpg. Compare that to a competitor like the Honda Pilot, which can make around 280 horsepower and 262 pound-feet of torque, but also only delivers 18 mpg in the city and 26 on the highway.

The Outback has a towing capacity of 3,500 pounds and the Ascent can offer up to 5,000 pounds of towing capacity.

Problems with non-Subaru engines

That's how good the Subaru boxer engine sounds on paper, and naturally problems will arise in practice. Certainly the Subaru has also had its fair share of issues that you should consider if you're interested in owning a Subaru, especially based on the engine.

Some Subaru models had serious head gasket problems that required replacement. You especially want to be aware of it.subaru forestrymanufactured between 2001 and 2009, Subaru Outbacks manufactured in the same period,Subaru Impreza2006-2008 and 2006 Subaru Bajas were notorious for needing head gasket replacement.

The reason why all of these vehicles failed so much with engine problems was because of the material that Subaru made the gaskets out of. It was not particularly reliable and prone to early failure. Subaru attempted to resolve this by switching to a multi-layer metal filler compound, but the problem persisted for years despite their attempts to fix it.

According to Consumer Reports research, if you built a Subaru model in those years, the time frame for head gasket problems was between 150,000 and 240,000 miles. This was a case where the boxer engine design really counteracted this. Because it is horizontal, when the car is stationary, fluids can collect on the head gasket and wear it out much faster than any other type of engine.

Unfortunately, replacing head gaskets is not a cheap proposition by any means. The typical cost for this type of repair was about $1,500.

Newer model Subaru vehicles shouldn't have the same problem, but it's something to keep in mind if you ever want to buy a used Subaru.

Subaru engine recall

In the year 2020, Subaru had to recall 188,000 vehicles due to the risk of engine failure. This affected the 2019 Subaru Legacy, theSubaruSubaru,the Subaru Outback and the Subaru Impreza. All of these are related to a problem with a faulty fuel pump.

In October 2019, Subaru also issued a recall to resolve an issue with engine computers that could continue to power the ignition coil even after the engine has been turned off. This affected 466,000 Impreza models from 2017 to 2019. It alsoSubaru Cross Treksof 2018 and 2019.

A second recall has been issued for 205,000 Subaru Impreza models built between 2017 and 2019, as well as the 2018 Crosstrek, due to an issue with the positive aluminum crankcase breather valve. The valve can simply break off and enter the engine, causing damage.

A worldwide recall of 760,000 vehicles affected Subaru Foresters and Subaru Crosstreks produced between 2013 and 2018. This was due to a problem with the rear suspension, but also a problem with the engine's valves. If the valve broke, you risked stalling the engine.

In 2019 there was even oneclass action lawsuit filedagainst Subaru and Toyota over a valve spring removal issue. The lawsuit argued that Subaru's solution to this problem actually caused more problems than just the valve spring problem. The risk of breakdown is said to have increased after the repair and caused some cars to catch fire.

the end turned out

There are many benefits to choosing a Subaru, based on a number of factors ranging from safety to fuel economy to design. The engine used by Subaru, this boxer engine, is only available in a very limited number of other vehicles, including some Porsche models. It's unique, but it has great advantages, as long as everything works as it should.

As we've seen, Subaru has had some problems with its engines in the past, but what automaker hasn't? Certainly, there are some reasons to consider choosing the Subaru and its boxer engine over other available vehicles.


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