http://www.edmunds.com/insideline/do/News/articleId=115309

BMW took awards for the following

Best Performance Engine
BMW 5-liter V10 (M5, M6)

2.5-liter to 3-liter
BMW 3-liter Twin-Turbo Diesel (535d)

3-liter to 4-liter
BMW 3.2-liter (M3, Z4 M)

Above 4-liter
BMW 5-liter V10 (M5, M6)

International Engine of the Year 2006
BMW 5-liter V10 (M5, M6)

2-liter to 2.5-liter
Subaru 2.5-liter Turbo (Impreza, Forester, Saab 9-2X)

Sweet.

It was held in STUTTGART, Germany for an international awards show. Now wonder these brands won all of the awards. It would be safe to safe if the GM LS7 was in the mix it would have won that category hands down. What other company has claim to a motor that makes that much power and still gets incredible gas mileage?

Other than that the list is pretty good

Not really the LS7 only makes 74.14hp per liter while the S85 makes 100hp per liter. In other words the BMW S85 V-10 is clearly more efficient.

Interesting.....technically you are correct, although the LS7 is under-rated by a lot.

Good list of engines though

The S85 is also underated at 500hp.

Still we're talking V8 vs. V10

True but the S62 E39 M5 and Z8 engine that is projected for the next M3 is making 400hp out of 4.9L thats 81.63hp per liter even being underrated.