Quote:
Originally Posted by mkoesel
No at all likely.
Displacement, not cylinder count, will figure into the efficiency equation. So a 3L V8, like the OP specifically mentioned, should be just as efficient as a 3L I6, all else being equal (i.e. similar valvetrain, ignition, fuel injection, and induction system technology).
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Uh, sure. 33% more moving parts just magically ignore the laws of physics. And don't try to say they'd weigh the same, eight extra valves and springs, two extra plugs, heavier crankshaft with counter balances for the V8, there's no way this works out. The old M60 3.0L V8 got horrific mileage when compared to even the M30 3.5L. Further, the smaller displacement per cylinder will result in less torque and more need to rev, contrary to the current M approach, right or wrong.