News Scoop – Subaru WRX STi Gets Two Engines?

May 26, 2010 by Adam Zillin
Filed under Latest Articles

As many of you already know, Subaru is returning to the market with a 4 door STi sedan. It has been a while since we’ve seen a 4 door sedan variant of the AWD rally conqueror. This time around though, the car is packing more power from two very different engines…

Surprisingly, Subaru will apparently be making a 2 liter and a 2.5 liter engine for this car. The 2.0 liter is reported to be the more powerful of the two, developing a healthy 308ps and 421N/m of twist – the 2.5 not far behind with figures of 300ps and 350N/m. Fuel economy, never the EJ series engines strong point, sits at a sightly improved 10.0 (6.2 miles)/ 10.4 (6.4 miles) kms per liter.

What surprises the most though is the torque figure. It baffles that the 2.5 liter engine, with its larger capacity, isn’t able to make an equal or even greater amount of torque.

Probably the biggest question lingers over why Subaru is considering the option of two engines for the platform. Having owned a 2.5 liter EJ25 for the last 2 years, I can tell you that it is different in character to the 2.0 liter twinscroll version but is it so different that both engines have to be offered as an option? Time will tell.

Keep an eye out for pricing too. The recently added STi Spec C 5 door retails for 3.15 million yen in Japan. Fuji Heavy Industries needs to make sure the new sedan doesn’t step on any feet or burn any bridges.

As for me, I just can’t wait to get my hands on one and see practicality hurl itself out the window!

Words: Adam Zillin

Photos: Subaru Japan

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PSP

First, the STi has never been equipped with a 2.5L in japan. Secondly, the PEAK torque figure of the EJ20 has always been higher than the EJ25. Thirdly, the torque average avalaible across the RPM is still higher with the EJ25. Finally, the EJ20 gets higher torque peak because of a higher psi boost in the mid-range RPM.
PSP

BTW I getting this Sedan too…
Stingray

Umm, not bad, I like the charcoal color they painted this car with, but I kinda miss the traditional blue.
sti freak

Just as PSP says really.

Basically the 2.5L engine was developed with the US market in mind as they prefer more mid range torque to top end screamers. The Japanese market however prefers the “purity and character” of the original 2L displacement.
Hence the 2.5l is more of a street tuned engine and the 2l is more hardcore. That’s not to say that the 2.5 can’t be a screamer if you want to modify it…..
MR2turbo

Didn’t the JDM get a 2.5? Wasn’t the STi Forester stacked with one?
macca

they still run the 2.0 ltr in Japan to fall within local govt incentive schemes (for small engines, fuel economy).
AlfredJP

the STi did get a 2.5L engine – but this was for the “slush box” version, ie., the STI A-Line
AlfredJP

as for the recently added Spec C? the latest GRB Spec C? production on that is finished – what stock are left on those remaining with the dealers. AFAIK, no more Spec C (as they are limited to a run of 900, and those with the limited “yellow” color until late last year).

how would i know? because i have a Spec C… *wink*