I'll give my impressions, opinions, and 2 cents. Just as a reference we've owned to date, 6 other Lexus'. 1991 LS400, 1992 SC400, 1994 GS300, 2002 Rx300, 2003 ES 300, 2006 GS430(we still have)
My wife and I drove the F Sport yesterday. Ours is ordered it didn't arrive yet. These will be responses to Gecko's findings from other people at dealerships.
Just from the way they shaped the LS500 tells me they already knew they would lose their LS loyal base(older buyers) with this car. IMO, I don't think they were concerned with that as much as getting new customers/buyers to the Brand.
The rear seat is smaller than the previous model years, yes, but by no means, is it, in any way, too small back there. The salesperson was in the back seat. He was around 5'9", with my wife driving, she's 5'4", He had enough room for a small child to stand between him and the back of the driver's seat. Plenty of room.
Note: My buddy is 6' 2.5" inches tall. He sat in the back seat and had no problems with being comfortable back there. (This was the F Sport with the Panoramic roof) I'm not saying there is as much room as the S560 he owns, but he wasn't uncomfortable back there.
Of course they could have made it more roomy back there, but you would lose that lower coupe(ish) look they were aiming for. Maybe LS owners like to put people in their back seats a lot, I know I didn't much.
I will say this though, my 2002 S500 had loads of room back there, when I sat back there I was very impressed with the amount of room the passengers had. I had the car for 4 years and can probably count how many times I carried around passengers. Great having all that room for them, but defiantly no benefit to me the owner. If I was being chauffeured, maybe I would have a gripe.
The Drive:
The first thing I noticed was how whisper quiet the LS500 was. I had to look at the dash a couple of times to see if the car was still on when we were inside the car talking to each.
I was also impressed while driving around town, it felt just like a V8. If I didn't already know what was under the hood, nothing indicated there wasn't a V8.
No problems at all moving that massively long car around. My 2002 S500 was 203 inches long, this is 206 inches long, but it didn't feel that long at all.
Lastly, I didn't get to ride it on the highway, but I had nice curvy stretches of road, it reached triple digit speeds very impressively I might add, wasn't loud and I was very impressed with the motor. I felt no lag at all, handles beautifully, and it would leave my V8 GS430 for dead in o-60 and quarter mile times. I forgot to mention this was in comfort mode. Didn't try it in Sport Mode. That's probably where the loud engine sounds and Turbo lag feels are coming from as reported by Gecko
My wife drove the same route I did, rode to the same triple digit speeds, needless to say I was impressed from the passenger seat also.
If you want to Spend More money and absolutely need the V8, just wait another year plus and get The LS F.
I personally won't drive my LS500 at the 0-60, or quarter mile speeds people are asking for, that's not why I'm buying this car, (the speed is defiantly there if you need it though) I have my Motorcycle for that.
If I need to drive like that, I will just buy the LC500 Or the LC F when it comes out.
Once again, just my opinions and impressions on the LS500 F Sport.