None - still on the original exhaust.
The car has now covered 172,000 miles without a single blown light-bulb.
To my knowledge it is the only car to do so. Even a used car from Lexus comes with a three year warranty. If they trust them themselves that much there shouldnt be anything to worry about. It makes me wonder if other Toyotas will last as long.
If I ever bother changing this car it will be for another LS400.
Not broken down once, superb engine and gearbox - the best in the business.
Considering it is a 4.0 V8 I still get an average of 28mpg.
Highly recommended to anyone.
The exhaust systems on the LS400 are made of stainless steel... supposedly never requiring replacement!
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