I agree...I have a Toyota Supra (Toyota's flagship model) that is from around the same time as the LS400...and while it is reliable (over 220,000 miles) it just isn't built as solidly as the Mercedes, or BMW, or Jaguar. It sort of "flops around" alot...kinda hard to explain, but it just doesn't feel like it was carved out of a solid piece of granite like the Mercedes does.

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Current cars:
2000 ML55 AMG, 174k miles
2003 C240 T-Modell, 202k miles
1995 S320, 207k Miles