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When you think of 4 Cylinder vs. 6 Cylinder, you would typically pick the large engine. Watch the new turbo 4 cylinder 528i take on the old 6 cylinder 528i in a head to head race and dyno, conducted by Classic BMW.
[youtube]http://www.youtube.com/watch?v=ajyTgYOkEhk[/youtube]The 2012 528i features the N20 turbo 4 cylinder engine which is quoted at 240hp/260lb-ft torque, 0-60 in factory quoted 6.2sec and is 15% more fuel efficient.
The previous F10 528i was powered by the N52 6 cylinder engine which had 240hp/230lb-ft torque and ran from 0-60 in factory quoted 6.6sec. And although the two engines are factory rated at the same 240hp, on this particular dyno, the N20 engine vastly outpowered the N52 engine – 240hp vs. 208hp at the crank. The result seen here is obvious based on the factory quoted numbers alone, but seeing a visual of the speed/acceleration difference is always useful.
