No tow bar possible.
Acceleration doesn't feel dramatic, but watch that speedo. Will put most cars to shame on an on ramp. Does not hang about at all as you have the instant electric torque. I've mostly driven normal mode, ECO feels a bit anemic and haven't seen more than 1-2MPG improvement. Have hit a high of 61+ MPG on longer trips. Everyday use, expect lower 50's without trying too hard and in normal mode.
Mine is the premium edition. You get almost all the bells and whistles +12.3 inch larger screen but keeping it well below the 40k mark (minus ML, hollow wheels but it's already quiet without them, 360 cameras this one I miss, real leather, ventilated seats, reclining rear seats and rear shades). If not mistaken, can still be ordered, to me it was the sweet spot. F sport has the 19s, no thank you. AVS in this type of vehicle in unnecessary, the American 350 sure, but not the 300h.
Finally, I have michelin cross climate + on mine, so you're covered there.
Be aware, rear seats do not fold down. Boot sizable but a bit shallow.