I drive a LS600hl with all the toys ( here in the UK ) bought for gbp 63k in 2010 with demonstrator miles on the clock. Now at 242000. She's had one rear shock, a new radiator, 4 tyre pressure sensors ( damaged by the wheel restorers ) and that's all really apart from usual wear items like pads and rotors etc. The transfer box has been leaking oil for years, I just make sure it's topped up every 10k service. Allegedly it's an engine out job to replace the seals, so more than the vehicle's value.
It's still a lovely car to drive, 0 - 60 in 6 seconds in a heavy car like this ain't too bad I reckon. Economy? Like they say, if you have to ask you can't afford it. The overall average is 25.8 mpg and she does a lot of city driving. On the highway she'll show 30 + mpg cruising at 85mph, the faster the better. In snow and ice it's like normal road conditions with the permanent 4wd, I love sailing past the ones that're vainly attempting to spin their wheels up long steep hills. The height high button is great for negotiating the really high and sharp sleeping policemen otherwise the front spoiler would ground.
Zero problems with hybrid system in 10 years so far. It's an expensive luxury car that so far is the best car I've ever driven. Servicing costs are probably £3k per year so with depreciation it has probably cost something like £9k p.a. to run, not including fuel and that's at Lexus main dealer prices!
So don't be frightened by scare stories. Most of the stuff you read on these forums is naturally enough, people with problems. I also have a couple of Benzes: a W211 220cdi wagon & a W211 280cdi which is a pleasure to drive with the V6 diesel motor ( smooth and quiet but not as smooth & quiet as the LS600.

I was reading this thread and it sparked some interest thought maybe an upgrade., but I’ve read reviews and it’s not faster, fuel economy is almost the same... what’s the benefit? Does it have longer range? I can go almost a 1000km in this car on the highway so what tangible benefits of the 600?

is it quicker I read the specs it’s slower no? Or maybe 0.1 sec. quicker... the mpg is exactly the same... someone else chime in what am I missing , diff headlights, leather dash, lka and advanced pc...

i only see minuses no pluses...to outweigh the minuses

i already have an almost fully loaded 460L I don’t have Lka and advanced pre collision whatever that means. Have everything else. Just trying to see if I can justify an upgrade. It’s not much more money than what I have now.

yeah i have the 4 seater don’t have lka and that

I have a rule - NEVER buy a Lexus or any high end car from a 3rd party car dealer - ONLY buy from Lexus dealer preferably CPO.