![]() ![]() The EZ36 engine stands tall as the king of Subaru six-cylinder engines. Sources: Subaru J-Spec Auto Car and Driver. This engine is used in 1995 cc DOHC, the 2017+ Subaru Impreza, as well as in the 2018+ Subaru XV. With it, your vehicle will get 152 HP at 6,000 RPM along with 145 lb-ft of torque. This engine features a compression ratio of 12.5:1 when run in the Subaru Impreza. ![]() This engine is used in the fifth generation Impreza sedan and hatchback, and that extra power makes a big difference. Why? Because, unlike the FB20B that preceded it, the FB20D comes with direct injection that provides a noticeable increase in power and efficiency. We’ve picked the FB20D as the best of the bunch. Whether it was their main goal or just a happy accident, we think that extra torque made quite a bit of difference.įigure 3: This Impreza GK from 2017 is fitted with an FB20D engine. This had another, perhaps unintended, effect of increasing the torque output compared to previous generations of Subaru engines. The new FB engines also allowed for a 28% reduction in friction losses compared to previous models, due chiefly to lighter pistons and connecting rods. Admittedly, fuel economy had not been one of Subaru’s strong suits up until this point, so these improvements were quite a welcome addition to the FB series.ĬLICK HERE FOR A VIDEO DRIVING DEMONSTRATION OF THE SUBARU IMPREZA GK FITTED WITH A FB20D ENGINE. These engines saw a marked increase in piston stroke and decrease in the bore, which was aimed chiefly at reducing emissions and boosting fuel economy without hindering the performance of the engine. ![]() As the first new generation of engines from Subaru since the EJ series, and the third-generation flat-four engine from the maker, expectations were high when the FB was first announced in 2010. The FB series was initially made available as naturally aspirated engines with 2.5-liter and 2.0-liter displacement levels. Subaru FB20Dįigure 2: This 2.0L FB20D from Subaru is the beating heart of the modern Impreza. We’ll consider the engines from both an OEM and aftermarket point of view. From the original E Series, first introduced in the US way back in the day, to the modern and fully redesigned F series, there have been a ton of great Subaru engines. In this post, we’ll look at some of the best and most important engines in Subaru’s storied history. However, for those who do want to do a little tinkering, Subaru engines also make great aftermarket engines thanks to their high reliability and durable parts and performance. Years of research and experimentation have gone into Subaru engines, which is why many motorists choose to leave their engines in pure, unadulterated OEM condition. Subaru engines are known for the top-notch quality of their OEM parts. What makes a great Subaru engine? A great Subaru engine blends power, performance, and reliability in a way that lets the vehicle live up to its fullest potential.įigure 1: A Subaru FB20 engine. ![]()
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