Best answer: Are Subaru boxer engines bad?

The Subaru EJ25 2.5-liter Boxer is the engine that has experienced the most problems for the Japanese automaker. … Consumer Reports says the older Subaru models using this engine will typically start to have head gasket issues around 90,000 to 150,000 miles.

Is the Subaru Boxer engine reliable?

Most Reliable Subaru Engine

The latest Subaru boxer engines are part of the FB series boxer engines. This engine series has done well in reliability tests, and specifically the FB20D has been praised for its reliability.

Which Subaru engines to avoid?

Subaru 2.5-L Turbo Four Cylinder

Owners of 2009-14 Subaru Impreza WRX and WRX STI models have launched a class-action lawsuit, alleging the pistons and PCV (positive crankcase ventilation) systems in the high-performance 2.5-L turbocharged engines may overheat or malfunction, requiring a king’s ransom in repairs.

How long do Subaru Boxer engines last?

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.

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Is Boxer engine bad?

Boxer engines are large and complex that is their greatest fault. The engines have a larger widths when compared to an inline 4 or a V6. If you have ever replaced spark plugs on a Subaru those engines are shoehorned in very tight. Not all manufacturers want to work around that kind of width.

Why are Subaru boxer engines bad?

Consumer Reports says the older Subaru models using this engine will typically start to have head gasket issues around 90,000 to 150,000 miles. The reason the Boxer engine seems to be more prone to have this problem is because of the engine design. … The gaskets deteriorate and oil and coolant fluids start leaking.

Why are Subarus so unreliable?

One of the core reasons that Subaru reliability has dropped is due to the problems that the Outback and Legacy have had with in-car technology. This is a common reason for declining dependability in a number of makes and models since the early 2000s. Many cars today have a great deal of new and complex technology.

Do Subaru engines burn oil?

So, the short answer is yes. Subaru models, especially the older models, have documented reports of excessive oil consumption. However, if you stay on top of your Subaru’s maintenance, you can effectively look past the bad habit and still appreciate everything these vehicles have to offer.

Why do boxer engines fail?

The problem stems from a faulty part in its horizontally-opposed engines, also called “boxer” engines, which align cylinders on either side of a single crankshaft in a flat way. The automaker first used the engine in the Subaru 1000 in 1966, and now uses it in every model.

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What is the most reliable Subaru engine?

Subaru’s 2.0-liter engine in the 2012-2013 Crosstrek and Impreza, the 2.5-liter engine in the 2013-2014 Forester, and the 3.6-liter engine in the 2010-2012 Outback are on the list.

Is 100000 miles alot for a Subaru?

Most Subaru models can be trusted to run, without major issue, for about 150,000 to 200,000 miles. … On average, those mileage benchmarks far exceed the likes of other older models that usually begin experiencing costly repairs closer to 100,000 miles.

Are Subaru Bajas reliable?

Add in Subaru’s solid reputation for reliability, the Baja’s easy-to-handle size and superior fuel economy (compared to a V6 pickup truck) and this odd duck of a car may make more sense than most people initially thought.

What are common problems with Subarus?

The Most Common Subaru Problems

  • Denso Fuel Pump Failure. …
  • CAN System Parasitic Drain on the Battery. …
  • Unintended Acceleration. …
  • Brake Light Switch Defect. …
  • Cracked Windshields. …
  • Subaru STARLINK Problems. …
  • Lineartronic CVT Reliability. …
  • Rodents Chew Subaru’s Soy Wires.

Why do people hate boxer engines?

Boxer engines seem like a bad design choice. They leak oil at the slightest provocation, head gaskets go at low mileage, they take up far too much room under the hood, a simple job like changing the plugs takes 4 hours and requires skin grafts.

Are boxer engines outdated?

Despite the engine’s many advantages, the boxer layout is largely unsuitable for consumer vehicles due to issues of cost, maintenance, and production time. Exotics rarely use it because of space constraints, meaning that overwhelmingly the only manufacturers that use the engine are the ones who have used it for years.

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What is the most reliable boxer engine?

Ranking The Greatest Horizontally Opposed-Engines Ever Made

  • 8 VW Air-Cooled Engine.
  • 7 Porsche 901/01.
  • 6 Subaru EJ257.
  • 5 Subaru EJ207.
  • 4 Subaru EJ22G.
  • 3 Porsche 911/83.
  • 2 Ferrari Tipo F113.
  • 1 Porsche M97/74.