• Jul 28, 2008
There have been countless conflicting reports about what will power the next generation Audi RS4 and the forthcoming RS5. Fourtitude had heard the rumors and decided to go straight to its sources for clarification. While the four-ringed obessesives weren't able to divulge the identity of their insiders (neither did CAR, which published of one the first stories about future RS powertrains), Fourtitude may have put to rest the rumblings that the next RS4 would ditch it's V8 in favor of a supercharged six.

According to Fourtitude, the 4.2-liter FSI V8 will soldier on in the RS4, and will also find a home in the RS5, which is currently undergoing testing both in Germany and the U.S. While a boost in output wasn't divulged, engineers will supposedly keep displacement the same, while decreasing frictional losses and possibly incorporating a new version of Audi's Valvelift system. If all goes according to plan, expect at least 450 hp from the direct-injected 4.2 and don't be surprised to find the tweaked V8 in the revised R8 around the same time.

Check out Fourtitude for the full report.

[Source: Fourtitude via AutoFiends]


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    • 1 Second Ago
  • 16 Comments
      • 6 Years Ago
      I liked it back in the day when the RS and S were turbocharged because you could just throw all the RS gear onto a much cheaper S4 and have fun. These V8s are definately strong in technology, but I'm a boosthead and just can't seem to like them as much as the twin turbo V6s. That could partly be because I can't afford it!
      • 6 Years Ago
      I don't believe Audi is going to make 450HP from their 4.2L V8 without supercharging it.
        • 6 Years Ago
        Well, the current 4.2 V8 makes 420 horse power so getting another 30 or something close to that with whatever new technologies they've got shouldn't be too hard in my opinion.
        • 6 Years Ago
        why on earth should they have any problems doing it? They get 500hp out of their 4.0l DTM V8 engines and there they are handicaped by super small 2x28mm air restrictors.

        BTW in the german car press they claim that both the 2009 M3 CSL and the RS5 will get 470PS(464hp) n/a out of the current engines, both engines beafed up by classic n/a engine modification
      • 6 Years Ago
      Good
      • 6 Years Ago
      I cant wait to see the RS5. I'm sure itll be the best Audi ever (other than the R8)
      • 6 Years Ago
      I can't wait to play with the RS5, should be a delightful improvement on the RS4.
        • 6 Years Ago
        I've just seen a white S5 yesterday. It is such a beauty. The car more like a concept car than a road car.
        • 6 Years Ago
        +1. The RS5 is near the very top of my wish list. I'm seriously considering getting an S5, but I wonder if I should just hold out and save up for the RS... although, I have no idea how much the RS5 is gonna actually cost yet. Hell, I still want the S5 though. Such a good looking car.
        • 6 Years Ago
        No arguments there. That's the car that's actually at the very top of the wish list. :)
        • 6 Years Ago
        I think we'd all rather :), i'd just prefer an RS5 as a daily driver.
        • 6 Years Ago
        Franz, I would rather get the GT-R in your profile picture.
      • 6 Years Ago
      That is an amazing color! Even cooler than the current blue. The RS4 has always been my favorite of the big 3 german (super)sports sedans. I have always wanted one but I don't think ill be able to afford one.
      • 6 Years Ago
      AWESOME! I already think the A5/S5 are the best looking coupes on the market. The current beefy V8 will add substance to style. This is definitely the #1 car on my shopping list for next year.
      • 6 Years Ago
      i heard that "corvette ZR-1" just ordered an RS4 and an RS5 ;)
        • 6 Years Ago
        Yep, to add to his collection of Hot Wheels RS6 and the yet to be released RS8. :D
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