Just replaced my 2017 Panamera 4S for a Panamera turbo. The 2017 and later 4S engine is definitely a disappointment compared to the naturally aspirated V8 of the 2010-2013 model. It is a tiny 2.9 L V6 with twin turbos and has a horrible engine sound and feels very weak until the turbos kick in. It does perform when revved hard but lacks instant throttle response. It let down the whole experience of driving what would otherwise be a good car. The worst aspect is that it is not any more economical than the old V8 and in my experience is a lot thirstier.DONT be fooled by the mpg figures quoted on the sticker. It does NOTHING alike the 21-28mpg quoted. I almost never got over 13 mpg in urban driving and rarely more than 20 mpg on the highway. IN fact many times I got 10 mpg. The problem is that to get any performance from the car you have to rev the engine so hard that the mpg becomes lousy. The small V6 twin turbo is designed to provide great numbers on the govt tests but NOT under normal driving ( remember the VW diesel scandal anyone?- this is similar from the same company!). What a difference the Panamera Turbo model. IT is a 4 L V8 and in a differnt league in terms of engine sound and responsiveness.PLus it gives much better mileage than the 4Sengine despite being more powerful. DO yourself a favor and DONT buy the 4S. You will be throwing a lot of money on a crap engine - not what you want from a Porsche
The 2017 Panamera Turbo is exceptional on all fronts. It is such an amazing improvement on the old model in every way. The drive, fit, finish and updated electronics are all outstanding. This car is by far the best car in its class and we have driven all of them.