1) i5 M60
2) Size and Weight – plus, our back seats are very rarely used for passengers. This necessarily includes Price, as we've considered both models and price still matters in this household.
Excluding price, the sedan I would choose and have considered is the Panamera Turbo S in this build configuration:
https://configurator.porsche.com/porsche-code/PP944EN6.
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2017 M240i: 25.9K, 28.9 mpg, MT, Sunroof Delete, 3,432#, EB, Leather, Driving Assistance Package, Heated Front Seats | Sold: E12 530i, E24 M635CSi, E39 520i, E30 325is, E36 M3 (2)
TC Kline Coilovers; H&R Front Bar; Wavetrac; Al Subframe Bushings; 18X9/9½ ARC-8s; 255/35-18 PS4S (4); Dinan Elite V2 & CAI; MPerf Orange BBK; Schroth Quick Fit Pro; Full PPF