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      09-09-2014, 03:43 AM   #36
mkoesel
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Drives: No BMW for now
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Quote:
Originally Posted by RPiM5 View Post
As solstice pointed out an all new V10 for the next M5 isn't out of the realm of possibility.
Well of course we both know it is technologically possible so it is physically possible as well. But there is the economic side and forces at play there make a new V10 no more likely than a V12 or V16 or whatever else we could dream up. I think that we agree those have a 0% chance in any new M5 or other performance sedan in its class (or below).

The average engine displacement is shrinking because turbocharging is becoming a standard engine feature. Engines above 5L will soon be gone from sports sedans and even displacements above 4L are becoming a rarity. Regardless of the emissions and efficiency benefits, and regardless of whether those can even be proven to be universally legitimate, this trend won't reverse because the industry as a whole has built economies of scale on this technology. Exotics are another matter entirely, of course.

There is simply no room in the costing model for small displacement engines with extra cylinders they don't need. You can build one but you lose money instantly to your competitor who didn't and still met consumer expectations. It is that simple. So again, while we both know it can be built, I am calling it right now that it won't be. And like I said earlier I am happy to wager on it if you are game.

By the way, if you want a sneak peak at the momentum in German car displacement shrinkage, keep a sharp eye on the W213 E Class developments. Word is the new turbocharged I6 (yes, that's correct) will be the top of the line engine in ~435hp form. I would not bet yet that the non-AMG V8 model is dead, but I think there's a real good shot. If that happens, look for BMW and Audi to follow suit with 4xx hp 3.0L turbocharged 6 cylinder engines taking over for V8s in this segment. That of course opens the door for the V8 as an exclusive for the M, AMG, and RS models. Well, for now that is. BMW has already said 200hp/L is on their radar so how long does the V8 have honestly - two more generations? Couple the six with an electric motor and we can get to 800hp, So then a V8 starts to look like overkill. And a V10? We might as well be talking about a flathead straight eight.
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