So with that nonsense out of the way let's get to what they said about the facelifted Panamera S/4S. The new turbo 3.0 V6 has 20 more horsepower than the outgoing 4.8 liter naturally aspirated V8 and an additional 15 pound-feet of torque.
This provides acceleration capable of 0-60 in 4.4 seconds and a 1/4 mile sprint of email@example.com. These are not exactly quick numbers compared to the outgoing V8 which has broken into the high 12 range in the 1/4 mile with trap speeds in the ~105 range. The new turbo motor should be faster but for whatever reason in this test it did not show much of an advantage although MotorTrend states it is faster than any S they have tested.
MotorTrend says there is a bit of turbo lag. The motor will not match the response of the V8, that is a given. They say the engine does not have much of an emotional component to it. That is likely accurate.
What the new motor offers though is a tuning bargain compared to the Panamera Turbo. The V6 with a tune on it will destroy the outgoing S/4S and even the Panamera GTS. With the V8 tuning it did not make much sense with a Panamera Turbo available in the lineup especially considering getting large gains out of the naturally aspirated V8 would be costly and difficult. Also it would be beaten by a stock Panamera Turbo let alone one with just a tune.
So, from a tuning standpoint, the new motor is a large improvement. From a driving emotion standpoint, it is not as exciting or responsive. If you are looking for tuning you know which motor to get and if you are looking for driving emotion you know which motor to get. Personally, I think the new motor with some modifications may make it quite a bit more exciting and well worth it if one runs into the older V8 model if you catch my drift.