Story time: IS350 vs IS350C

I'm saying to not bother with selling the LS400. It's a great car and until HCCI is a thing the VVTi 1UZ is not that far off from current cars with dual VVT and direct injection which is probably like a 10-20% benefit at best. If you scale the LS460's engine to 4 liters you see that the power benefit over the LS400 is only 15% over the course of the past 15 years. Due to extra safety and NVH requirements the LS460 is now something like 4200 pounds while the LS400 was closer to 3700 pounds and fuel efficiency. There's basically zero real benefit to upgrading because all of the extra power is eaten up by the extra weight of the car and fuel mileage is constant as well.

Keep the LS400 maintained and in great condition, save your money for a sports car as a weekend car if that's what you want. Selling the LS400 for an IS350 is a shitty halfway compromise.

Ohhh, how I miss clean car designs of the 90's/early 2000's. Every new Lexus looks like a fucking Tron spaceship.

>Selling the LS400 for an IS350 is a shitty halfway compromise
I was actually one of the people recommending upgrading to LS430, and I own an IS350 haha. I don't see anything wrong with keeping the LS400 though.

The LS430 is almost completely identical to the late LS400. Some things were improved like the air suspension but if you have an LS400 with no navigation system and standard spring/damper suspension there's next to no benefit to upgrading to an LS430. It was mostly just an interior and exterior redesign combined with extra engine displacement.

It basically comes down to slightly better interior and slightly more power. For the 5-10k you're going to spend getting one, is better spent on maintaining the LS400 well and modernizing it with things like LED interior lighting. If you really want more power a Bullet supercharger kit with 7 psi of boost is more than enough to give the car some real power.

not OP

how much should I spend on a LS400.

KBB value for an excellent 98-00 LS400 with low miles is sub-5k. I'd expect to pay closer to 7-8k for one that is really in amazing condition (no leather cracking/drying out, no issues, no rust, low miles). If you pay closer to 4k I'd expect to have to do some work to really get it in great condition.

shit theres none near my at that price.

Don't pay over 10k. You might have to do some travel for a good one but it's worth it I think.

Sometimes I wish I got an LS430 instead of my IS350. Probably would be a better daily to just cruise around like a boss and have more space. Problem is I didn't even know it existed back when I was car shopping. Oh well.

The reason I'm debating is because in all honestly a 19 year old doesn't need a FULL SIZE LUXURY SEDAN. Sure I love the big ass comfy plush interior and the raw power of V8 goodness kicking in the rear wheels. But does a millennial really need it as a DD? Sure ALL the fine cougar mami's and the hotbox sesh's come thru but I also want something a lil easy with the MPG but still can do donuts