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Confusion 2.0: GM Readies New Turbo Four-Cylinder
Expect the new 2.0 turbo to have at least 270 HP.
www.GMInsideNews.com
October 4, 2011
By: Nick Saporito


2012 "LHU" 2.0-liter turbo.

Debuting back in 2006, General Motors first became famous for the 2.0-liter displacement with the coveted LNF. The Ecotec four-cylinder was quickly made famous for its 260 horsepower and 260 foot-pounds of torque. Since then the 2.0-liter has been a hot topic in regards to GM applications, but GMI hears it’s about to get hotter with the launch of an all-new 2.0-liter turbo.

Today the LNF is no longer being utilized in any vehicles, however a variation of the engine is still in production for the Buick Regal Turbo and Regal GS in North America, and the Opel Insignia in Europe. The 2.0-liter mill in all three applications wears the name LHU.

In the Regal Turbo and Insignia the engine generates a modest 220 horsepower and 258 foot-pounds of torque, while the high-output Regal GS generates 270 horsepower and 295 foot-pounds of torque.

Much confusion has surfaced that the 2.0-liter turbo in the Regal GS is the "new" 2.0-liter, but that is incorrect. In the Regal GS GM has upped the boost level on the turbocharger and increased exhaust flow to generate the increased power figures. Because the modifications are minimal, it is simply referred to as the high output version of the LHU.

According to sources familiar with engine development, GM is readying an all-new Ecotec 2.0-liter turbo engine. The engine is expected to debut in 2012 in the upcoming Cadillac small sedan, codenamed ATS. Sources also state that the engine will be the V-6 replacement for the all-new Chevrolet Malibu.

Exact power figures for the new 2.0-liter turbo are not known at this time, however sources told GMI to expect it to generate between 270 and 280 horsepower. The engine is reportedly an all-new design and will be part of the new family of Ecotec four-cylinders at GM, joining the recently announced Ecotec 2.5-liter, also found in the 2013 Chevrolet Malibu.

Back in August GMI confirmed that future GM midsize sedans would only see four-cylinder power. The news of this new 2.0-turbo suggests that the V-6 exodus in the GM midsize sedan lineup may not be as much of a problem as originally thought.

GMI's source concluded by saying that the new 2.0-liter turbo will be "The engine of choice" at GM going forward.
 

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I guess I never realized how much horsepower the 2.0 had/has. I thought I was reading wrong. That's only 5 HP short of my 03 Northstar!!!
 

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Good to hear. I wonder what kind of fuel economy they will get out of it? I wonder if they could combine this engine with eAssist? Well, I'm sure they could, the question is if they ever will?
 

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Sounds nice. If only if there was a crossover or Regal wagon at GM that interested me with this new engine.
 

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We do know that Government Motors' efforts with I4 turbos have been unremarkable efforts - gas hogs and the performance just doesn't hit the road. Unless this thing is going into a Sonic with Tots, consider another engine for your vehicle. You won't save money. You won't save gasoline. And you won't beat a shopping cart from a stoplight.
 

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That's what I had been saying all along -- The new 2.0 isn't even out yet. The GS is just a glimpse of what it will be.

Its hard to argue against a turbo four that meets global displacement laws and produces just as much power and more torque than most V6s. GM can tune it for various applications and still meet global standards.

I'm looking forward to the finished product.
 

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I see the merits of this, the LFX gets 30 MPG in the Impala.

My question is, are they really going to offer a 280 HP Turbo 4 and a 300 HP V6 in the ATS? That is redundancy if I have ever seen it.
Expect the new 2.0T to rival Hyundai's in fuel economy. In other words, we're not talking V6 fuel economy here.

From what I understand of the ATS, the 2.0T will be the "enthusiast" engine in the car. It will have a manual and all of the sport packages will be offered with that engine. The LFX will be automatic only and be more for luxury customers. I've spoken to people have driven both, the car guys all preferred the 2.0T.
 

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Its accepted fact, that a similar power output turbo motor will be more efficient than a larger displacement engine with more cylinders. There is less reciprocating mass, the engines themselves are lighter. Not sure what points are being made above, or where any facts exist to back them up.
 

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Expect the new 2.0T to rival Hyundai's in fuel economy. In other words, we're not talking V6 fuel economy here.

From what I understand of the ATS, the 2.0T will be the "enthusiast" engine in the car. It will have a manual and all of the sport packages will be offered with that engine. The LFX will be automatic only and be more for luxury customers. I've spoken to people have driven both, the car guys all preferred the 2.0T.
Any information about torque numbers?
 
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