When Ford announced that its 2015 Mustang would arrive with a 2.3-liter EcoBoost four-cylinder engine, three letters came to mind: SVO. While Ford hasn't said a word regarding the rebirth of a Mustang SVO model, this latest set of spy shots shows us something very, very interesting. Allow us to explain.

The Mustang prototype in these photos looks very similar to the GT500 test cars we've spotted before – same bulging hood, aggressive front fascia and air vents aft of the front wheels. What's different, however, is around back. Have a look at the exhaust, and note that instead of the GT500's usual quad pipes, two of the exhaust outlets have been capped off.

Our spies point out that these exhaust outlets could be closed for some sort of emissions testing or another engineering reason, but it's also important to note that the engine and exhaust notes of this car sound completely different from earlier GT500 prototypes. We've got a video below that compares the two.

Of course, all of this is high speculation right now, but the exhaust differences and new sound indeed have our interest piqued. Click below to watch (and listen) in the video, and then tell us what you think is going on here, in Comments.

Ford Mustang SVO Spy Video


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    • 1 Second Ago
  • 42 Comments
      John
      • 7 Months Ago
      Call me crazy, but I believe we may have the first Ecoboost v6 mustang on our hands
      johnnythemoney
      • 7 Months Ago
      I wouldn't mind wheels like those. I know it's camo but it suits the car.
        jcar302
        • 7 Months Ago
        @johnnythemoney
        Take a look back at the foxbody svo, these wheels aren't so far fetched to be real. With that said, who knows, but i kinda like them too, but i think the color would have to match the car of the car for them to work.
          EXP Jawa
          • 7 Months Ago
          @jcar302
          They do appear similar to SVO wheels at a glance, but if you look close, they're just flat covers that are zip-tied to the spokes of an actual wheel. Nothing to see here...or so they want us to think...
      EXP Jawa
      • 7 Months Ago
      Interesting, but I wouldn't read too much into it just yet. Mule vehicles, being what they are, shouldn't be taken at more than face value. Too much cobbling together for too many different reasons. The exhaust note is intriguing, but not much to go on. As much as I'd like to see a new SVO, Mach1, or Boss 302 (or all of the above), I doubt Ford would introduce a special edition car any time soon. If they're introducing the coupe models at Job1, the convertible 6 months or so later at Job2, then the SVT product - whatever its called - nearly 6 months after that, they'll have enough going to keep everyone busy and to keep interest boiling for some time. That's by plan.
        Chris
        • 7 Months Ago
        @EXP Jawa
        That's typically the case, but not always. For instance, one could get a brand new Mustang Cobra back in 1994, the year that the SN95 made its debut.
      Randy
      • 7 Months Ago
      Looks nice! Though I drove Mustangs for about 7 years, I've been away for a awhile. The last iteration and the 15s are making me want to get back in the saddle!
      Tagg
      • 7 Months Ago
      Could be the 2.9 EcoBoost V6 that is currently slated for the new Taurus and MKS.
        Ron
        • 7 Months Ago
        @Tagg
        That was my thought as well. Perhaps a SVT mustang eco boost?
      EXP Jawa
      • 7 Months Ago
      I wouldn't be too shocked if this were a mule for the Ecoboost performance pack option. Why it would still need to be disguised, I don't know, but sometimes the old camo test mules are still used for development and calibration work right up till to launch, just because test vehicles can get scarce. The domed hood and all could be just camo. I was looking the disc covers on the wheels - if you look close, you'll see that they are simply a disc of some flat stock that is zip-tied to the spokes of the actual wheel. The wheels themselves have 10 spokes, possibly in 5 pair groups. The Ecoboost performance pack comes with black-painted wheels that have 5 sets of paired spokes. So, based on that it seems plausible at least...
      Erik Bigford
      • 7 Months Ago
      sounds like a mix of a boxer 4 and a v-6, depending on rpm. Who knows what they are doing. Could just be a fancy exhaust upgrade for the ecoboost 4 or something.
      Patrick Corcoran
      • 7 Months Ago
      Has anyone heard anything on the flat plane V8? I'm not holding my breath, but it certainly has my curiosity piqued.
      Bertman
      • 7 Months Ago
      My bet says its the V6 Ecoboost. And i hope they call it the GT350. If: GT500= Supercharged 5.0 V8 Then: GT350= Turbo 3.5 V6 Makes perfect sense.....
      Chris
      • 7 Months Ago
      I wonder how close the wheels on this test mule are to the ones that will be on the production model. The only reason I'm curious is because they look like the ones from the old SVO. If so then it would certainly be a nice nod to the past and way to visually distinguish it from the V6 models.
      Rob8
      • 7 Months Ago
      What was up with the sequential blinker?
        EXP Jawa
        • 7 Months Ago
        @Rob8
        Mule vehicle. Don't look for it to have the production wiring harness, especially since actual production of the standard car hasn't ramped up yet. Even if this mule is testing systems for an unknown turbo GT for the 2016 or 2017 MY, it could well be (and likely is) a repurposed development mule from the original program, possibly built up the first time a year or two ago. In my own experience, I've noticed lots of times were test cars can be scarce within the OEM. If someone within the program needs one, they might have to make due with something left over from an earlier phase of development.
      Dean Hammond
      • 7 Months Ago
      finally a dark color...those rear haunches look fantastic...
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