Everything you need to know about Subarus 2.5 engine - vehicle history (2023)

FAQs

Is the Subaru 2.5 L engine a good engine? ›

Generally speaking, a Subaru 2.5 engine has the ability to run between 250,000 and 300,000 miles before needing any kind of significant auto maintenance or repair. Since most drivers average around 14,000 miles per year, this would mean that a Subaru 2.5 engine could conceivably run for over two decades.

There are several Subaru models that feature a 2.5 engine. The start of the 2.5 engine was the Legacy, including the EJ25D engine from 1994-1999, EJ251 from 1999-2004, EJ252 from 2000-2002, EJ253 from 2009-2012, EJ255 from 2005-2012, EJ257 from 2005-2006 and the EJ259 in 2004.

Best Answer. 2.5i is essentially a trim level. It implies the 2.5 liter (or 2.5L) naturally aspirated engine is used. 10 people think this is helpful.

Subaru FB engine

The FB-series (initially available as naturally-aspirated engines in 2.5 and 2.0 litre displacements) is the first new generation of boxer engine since the EJ-series. Subaru announced details of the FB engine on 23 September 2010.

Abnormal combustion: Head gasket failure can occur on naturally aspirated 2.5L Subaru engines due to detonation or pre-ignition. It is more common for owners of turbocharged models to experience this type of failure though, due to increased cylinder pressures.

A car with many miles on it is more likely to break down badly, costing a lot of money and sometimes making it worthless. In short, between 150 and 200 thousand miles is when most Subarus reach its first mileage limit. After that, the limit can be raised to 300,000 miles with major maintenance.

It is used in the Subaru BRZ, and is identified by a Toyota engine family code known as the 4U-GSE, which is installed in the Toyota 86 and the Scion FR-S.

Subaru cars, trucks, and SUVs are currently manufactured by none other than Subaru itself, as the company is the automotive division of Subaru Corporation.

2.5 liter 4 cyl DOHC turbocharged engine w/ 305 hp and 290 lb-ft torque [STI]

While most of the very latest Subaru models feature a permanent metal timing chain, older Subaru models and the ultra-high-performance Subaru WRX STI feature a rubberized timing belt. Just like rubber accessory belts under the hood, the timing belt may stretch and crack over time.

How much oil does a 2.5 Subaru engine take? ›

For the 2.5L 4-cylinder engine, the capacity is 5.1 quarts; for the 3.6L 6-cylinder engine, the capacity is 6.9 quarts. Again, you'll want to check the level to make sure you don't have too much or not enough oil.

With the exception of performance vehicles, all other Subaru models are designed to run on 87 octane.

The Subaru six-cylinder engines are a series of flat-6 engines manufactured by Subaru, a division of Fuji Heavy Industries, made in three distinct generations.

Subaru (スバル) (/ˈsuːbəruː/ or /sʊˈbɑːruː/; Japanese pronunciation: [ˈsɯbaɾɯ]) is the automobile manufacturing division of Japanese transportation conglomerate Subaru Corporation (formerly known as Fuji Heavy Industries), the twenty-first largest automaker by production worldwide in 2017.

A 2.5i engine comes equipped with an i-active valve lift system, which causes the engine to automatically respond to atmospheric and driving conditions to continuously perform at its highest efficiency.

Subaru is aware of the head gasket issues and in 2014 began outfitting all their models with different head gaskets that have rectified the issue. Pro-Tip: Before your factory warranty expires, it's a good idea to have your Subaru completely checked out to ensure everything is working the way it should.

The head gaskets on your Subaru will typically last around 100,000 miles, depending on the year and model you own. You may also need your head gaskets replaced if you notice that your vehicle is running rough or your engine oil develops a milky color.

A number of Subaru models are affected, however the most common failures include the 2.5 Liter SOHC engine used in the late 1999-2004, Forester, Impreza, Outback and Legacy. Signs and symptoms of engine head gasket failure include: Engine overheating.

The average car can last anywhere from 150,000 to 250,000 miles in its lifetime. However, there are reports of Subaru Foresters lasting up to 500,000 miles if they are specially taken care of. This is somewhat of a norm when it comes to Subaru, as 96% of the cars they sold in the last decade are all still on the road.

And, Toyota was awarded the most reliable brand at the 2021 Auto Trader New Car Awards. Also, Toyota's can last well past 300,000 miles (think of the million-mile Tundra), while Subaru typically lasts around 200,000 miles.

Which Subarus have engine problems? ›

Although Subaru has been challenged with engine issues, most of the issues were isolated to a few engines, namely the EJs that were in the Impreza, Forester, Legacy, Outback and Baja models between 1996 and 2005. The latest Subaru boxer engines are part of the FB series boxer engines.

Both Subaru and Toyota have a reputation for durability and practicality that make them a great choice for families and commuters. However, for the most part, Toyotas tend to have slightly higher reliability ratings than Subaru cars.

Toyota first took a stake in Subaru in 2005 and the move is part of a plan of spreading its bets. The Japanese carmaker, Volkswagen AG and other auto companies have been forging partnerships as they face an uncertain future, with new technologies and business models disrupting the $2.23 trillion global auto industry.

As of March 31, 2020, Subaru Corporation's largest shareholder was Toyota Motor Corporation, owning 20.02 percent of issued shares. The largest group among shareholders were financial institutions. Established in 1953, Subaru Corporation is a Japanese motor vehicle and aerospace manufacturer headquartered in Tokyo.

“SUBARU” signifies a Japanese word meaning “unite,” as well as a term identifying a cluster of six stars, which the Greeks called the Pleiades – part of the Taurus constellation. According to Greek mythology, Atlas' daughters turned into this group of stars.

(SIA) is an automobile assembly plant in Lafayette, Indiana, which began as Subaru-Isuzu Automotive, Inc., a joint venture between Subaru Corporation and Isuzu Motors Ltd. Today, the plant is a wholly owned subsidiary of Subaru Corporation which produces the Ascent, Impreza, Legacy and Outback models.

While Subarus are certainly not the cheapest cars on the market, they are also far from the most expensive. In fact, the average Subaru owner spends about $617 per year on repairs and maintenance. This is actually slightly above the average for domestic makes and models.

Subaru makes its engines in its two manufacturing plants located in Gunma, Japan and Lafayette, Indiana. Subaru is one of the largest automobile manufacturers in the world. Here are four of its most popular cars: Outback.

Smoother operation: Because the pistons are horizontally opposed, their firing motions cancel out, resulting in less vibration. And unlike inline engines, boxer engines don't require special parts to counteract vibration, reducing cost and weight.

What is the average cost to replace a timing belt Subaru? ›

Shopping around to get a few quotes is your best bet to get the best deal, but you can expect to pay anywhere from $409 to $919 (including parts and labor).

Timing Belts Have Extra Importance on Interference Engines

In a non-interference engine, a broken timing belt simply means that the engine will stop. In interference engines, improper timing can lead to a piston striking a valve.

Other signs of a malfunctioning Timing Belt (or bad timing chain) may include ticking or clanking noises coming from the front of the engine, the Check Engine light coming on, and excessive engine vibrations.

This means you'll want to add 3.2 oz of oil to every gallon of gasoline.

Subaru Outback Oil 0W20 Synthetic.

The Subaru vehicle with the highest mpg ratings is the 2022 Subaru Impreza, which offers up to 36 highway mpg and 28 city mpg. Wondering which new Subaru SUV has the best gas mileage? The 2021 Subaru Crosstrek returns up to 34 highway mpg to help you conquer all of your adventures.

However, the engines found in the Subaru BRZ, the Subaru WRX, and the Subaru WRX STI are built for higher compression with a powerful turbocharger -- as a result, regular fuel can be problematic in these engines. Instead, premium gas is required.

No, premium gas does not last longer than regular gasoline in a fuel tank. A car owner might only consider the longevity of a car's gas if the vehicle has been sitting unused for an extended period.

The first 1,000 miles you put on your new Subaru are the ones you want to be mindful of. During those first 1,000 miles you truly break in the elite flat BOXER^® engine tucked under the hood of your ride.

Can Subaru engines be rebuilt? ›

A Subaru engine rebuild specialist will remove the old engine and completely disassemble it. Each part gets inspected and cleaned, with any damaged parts getting replaced. The engine will get rebuilt with new seals, gaskets, and lubricants.

The Subaru 2.5L engine can be very reliable and is very capable of outlasting the vast majority of engines with 200,000–300,000 miles being common and even higher possible. Many claim they will all blow head gaskets but this is not the case. I won't lie because it is a known problem but not every engine experiences it.

The Subaru Love Promise is our vision to show love and respect to all people at every interaction with Subaru. Together with our retailers, we are dedicated to making the world a better place.

First position: country of origin. You can find the world manufacturer identifier (WMI) by looking at the first three digits. The first character is the country of origin for your Subaru. The country of origin will either be Japan or the US.

If you're looking for where larger Subarus are made, just look a few blocks south of Subaru-chō. The Yajima plant builds the Legacy, Forester, and Outback, in addition to further Imprezas and XVs. More than 3,000 employees work at this location to feed the intense demand for these most mainstream of Subaru offerings.

That symbol is just there to tell you that Subaru Intelligent DRIVE, or SI-DRIVE, is engaged in Intelligent Mode.

Best Answer. 2.5i is essentially a trim level. It implies the 2.5 liter (or 2.5L) naturally aspirated engine is used. 10 people think this is helpful.

2.5 liter 4 cyl DOHC turbocharged engine w/ 305 hp and 290 lb-ft torque [STI]

Like many Subaru models, the Legacy is a fairly reliable vehicle. However, there are several reliability issues of the Legacy that any potential buyer should know: Excessive oil consumption: Several model years of the Legacy have struggled with excessive oil consumption.

However, the engines found in the Subaru BRZ, the Subaru WRX, and the Subaru WRX STI are built for higher compression with a powerful turbocharger -- as a result, regular fuel can be problematic in these engines. Instead, premium gas is required.

Which Subaru engine has the best mpg? ›

2022 Subaru Outback Gas Mileage: 33/26 mpg city/hwy.

The 2022 Crosstrek Sport or Limited with the 2.5-liter engine comes with 182 horsepower and 176 pound-feet of torque. It has 30 more horsepower than the 152 horsepower and 145 lb-ft of torque from the 2022 Crosstrek's 2.0-liter engine. Check out the 2022 Crosstrek model guide here.

For the most reliable Subaru Legacy year in this lineup, we recommend picking up the 2006 and 2007 model years due to their excellent reliability ratings and fuel economy. Both 2006 and 2007 Subaru Legacy models received the “Seal of Awesome” award from CarComplaints.com.

Subarus are reliable cars, versatile and offer a wide range of customization with new purchases. However, they are also tremendously valuable as preowned purchases. If you're looking for a great brand of used car to buy, Subaru should definitely make your list of top automakers.