No one at General Motors is talking publicly about a rumor post over at InsideEVs that claims the 83-horsepower, 1.4-liter range-extending gas engine currently used in the Chevrolet Volt will "definitely not" be the engine that is used in the 2014 model-year Volt. And, by no one talking publicly, we mean that our emails have gone unanswered. InsideEVs just got an "Unfortunately, we do not comment on future product details, so I cannot provide any information related to your inquiry," from GM spokesperson Kevin Kelly.

So, that means it's speculation time. InsideEVs claims to have spoken to an unnamed source who says that the replacement engine will be the new 2.0-liter turbo. This source says this engine has been tested on the Volt's Delta II compact vehicle platform, which is also used in the Buick Verano and many others. A larger engine does not necessarily imply worse fuel economy – see, for example, the jump from the 1.5-liter engine in the second-generation Toyota Prius that got 46 combined miles per gallon to the 1.8-liter in the third-gen that gets 50 – so we're not discounting the rumor outright. InsideEVs goes on to suggest that the 2.0T will also find its way into the Cadillac ELR (the production version of the Converj concept from 2009) that uses Volt technology, whenever that car arrives. To feed the speculators, here are some other stories about Volt engine possibilities from the archives.

Our former colleague Sam Abuelsamid is skeptical of the 2.0 turbo story, though, writing that whatever engine replaces the 1.4, it will "almost certainly will not be a 2.0-liter turbocharged four as used in numerous GM vehicles including the Buick Regal GS and Verano T." He continues:

A 200+ hp turbo 2.0-liter makes absolutely no sense when you only have 161 hp of electrical power. The 2.0-liter is larger, heavier and thirstier than the 1.4 and makes way more power than can be used by the electric drive system.

The 2.0T would only make sense as part of a parallel plug-in hybrid drivetrain in some other vehicle. My guess (and I have no inside information on this, pure educated speculation) would be that they would opt for the new small engine family being co-developed with SAIC which starts at 1.0-liter. Those engines could be in production by next year and would be a much better fit
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  • 51 Comments
      z28ssx
      • 2 Years Ago
      Maybe it will be a 1.0L turbo engine, or perhaps a naturally aspirated 2.0L. A 270HP turbo 2.0L doesn't make any sense in the Volt.
        • 2 Years Ago
        @z28ssx
        [blocked]
        RudyH
        • 2 Years Ago
        @z28ssx
        Agree BUT! That would be one of the most fun quasi electric car on the market today!
      Cinder Path
      • 2 Years Ago
      Put a Diesel in it! So far though, I've had my Volt since April, and I've used a scant 3 gallons of fuel over 1800 miles...
      David Thompson
      • 2 Years Ago
      Considering the name of the powertrain is VOLTEC I think its easy to confuse VOLTEC with VOLT. So consider what we know for certain already. The Cadillac ELR will be using the VOLTEC drivetrain. We know that Cadillac buyers will demand a higher level of luxury, resulting in a heavier car. We also know Cadillac buyers will demand much better performance. Based on what we know, I'd bet the farm that the 2.0T is going into the Cadillac ELR and the software will be tweaked to allow the combustion engine to drive the wheels at the same time as the electric motor if the pedal is mashed hard or if its in performance mode. Even on the current Chevy Volt it would only be a matter of software to allow this. I wonder if any tuners are working on this...
        Sami Vainionpää
        • 2 Years Ago
        @David Thompson
        Just how would that work? As far as I know, the engine in Volt only works as a generator, with no link to the drivertain.
        Jonathan
        • 2 Years Ago
        @David Thompson
        I completely agree with your comment and was thinking the same thing that you posted when I read this artical . Good to see someone like you on this site who has a clue .
      danwat1234
      • 2 Years Ago
      They should not be looking to increase power of the engine, they should be looking to increase the fuel efficiency of it. Because, as it stands, the battery depleted fuel economy of the vehicle isn’t outstanding. They should be looking to use an Atkinson cycle engine at the very least, like the Prius engine, but hopefully more like an HCCI engine for even more efficiency. I agree that a bit more displacement (maybe 1.8L) is needed if going to an Atkinson cycle engine because there is less compression with an Atkinson cycle engine so a larger displacement is needed for the same power output. There is no reason to increase the HP of the engine, as the current ~80HP engine is plenty for driving and even towing a small trailer behind you on long trips. I know the engine directly drives the wheels when in charge-sustain mode when driving at highway speeds, but no more HP is necessary and would be a step backward. Crossing my fingers Read more: http://wot.motortrend.com/build-it-your-way-2014-chevrolet-volt-1-4l-turbo-2-0l-turbo-or-2-0l-diesel-with-poll-218085.html#ixzz24mIn6ZRv
      ammca66564
      • 2 Years Ago
      I have a theory: they're going to put an HCCI engine in it. The first of its kind. And HCCI can work in a Volt - the problem with HCCI is that it doesn't work over the engine's entire rev range. But that's not an issue for a Volt, which runs its engine at a continuous speed to charge the battery. If GM does this, it'd be a huge breakthrough, and would solve the Volt's not-too-thrilling gas engine mileage. 38 mpg would loft up over 50, if what I read about HCCI is right.
      Kennesaw K
      • 2 Years Ago
      Love it, just the way it is. Take a test drive, for anyone that thinks it's not a great car. That's all it took for me, along with the idea that maybe I could get by each day on mostly the electric charge rather than using some gasoline. I'm plugging the dealership Carl Black Chevrolet in Kennesaw, GA because they were no pressure and pleasant to do business with. K-
      Rob
      • 2 Years Ago
      How about ditching the Volt all together.
      MKIV
      • 2 Years Ago
      Gen 1 owners, your resale value just went down the toilette.
        Synthono
        • 2 Years Ago
        @MKIV
        This just in! Older model cars worth less money than newer model cars! News at 11.
      michigan
      • 2 Years Ago
      Vaporware
        Nemebean
        • 2 Years Ago
        @michigan
        Welcome back from that rock you've been living under for the past couple of years, which you apparently crawled under back when that joke was relevant (it was never particularly funny).
        Jonathan
        • 2 Years Ago
        @michigan
        Stop posting comments that are bogus and vaporware . They should ban trolls like you from this site . Do you work for fox News cause your comments are irrelevant and a lie just like theirs are ? Since you are clueless about autos go find a site where you know something about the subject matter and stay off of this one .
      Buckus Comments
      • 2 Years Ago
      I don't really see this happening. Adding a turbo and it's inherent complexity to the electric drivetrain and it's inherent complexity...makes it really complex. MIght as well add a small two-cylinder turbo-diesel in the trunk to complete the trifecta of stuff that is going to break.
      Rich M
      • 2 Years Ago
      They need to get the gas mode fuel economy at least up to the level of a regular hybrid. 45-50 perhaps. If this means changing the engine, and possibly making a mechanical connection to the wheels, so be it.
        • 2 Years Ago
        @Rich M
        [blocked]
        montoym
        • 2 Years Ago
        @Rich M
        The gas mode is used infrequently, so it's much less of a problem. Compared to a typical hybrid ( or even another plug-in like the Prius), the Volt will use less gas because it uses the ICE less, even if that ICE usage is worse fuel economy-wise. However, from a pure PR standpoint, I agree that they should be able to advertise a higher mileage for the CS mode, even if that mode is used well less than half the time http://www.voltstats.net/ shows that on average, Volt owners are in EV mode over 70% of the time which leaves less than 30% of the time using the ICE.
      zamafir
      • 2 Years Ago
      Makes a ton of sense, vw's looking to use everything from a 1.4T up to a 3.0T with their hybrid models and keeps towing out that rotary in their series a1 hybrid concept they've indicated will be in production by 2015, along with a plug in diesel hybrid with quattro by the end of next year in at least one Audi model. In short, from at least one competitor, there will be a ton of turbocharged fairly performance oriented hybrids and plug in hybrids in less than a year, GM's looking to remain relevant as other automakers clue in to the beauty of something like the 918 but on a much smaller more affordable scale. reasonably quick when needed, ridiculously fuel efficient, electric range. GM would be stupid not to continue to evolve their vaguely series hybrid platform to many models and engines with everyone else indicating that is the direction they're all going.
        • 2 Years Ago
        @zamafir
        [blocked]
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