Lexus Ls400
Reliability, running costs, and MOT data across 10 years from 2,740 real MOT tests.
Avg Pass Rate
83%
Total Tests
2,740
Best Year
1991 (91%)
Years Covered
10
How reliable is the Lexus Ls400?
Lexus Ls400 by Year
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About the Lexus Ls400
The Lexus Ls400 has been tested 2,740 times in 2024 MOT data across 10 model years (1991 to 2000), with an average pass rate of 83%. That's slightly above the national average of 82%. Available as petrol.
Best and Worst Years
The 1991 model is the most reliable with a 91% pass rate from 55 tests. The 1999 model has the lowest at 79%. The 12 point spread between years means reliability varies somewhat, but no year is dramatically different.
Reliability Trend
Older LEXUS LS400s tend to have better MOT pass rates than newer ones, with an average decline of 3 percentage points across model years.
Mileage Across Years
The oldest model in our data (1991) averages 145,765 miles, while the newest (2000) averages 152,939 miles. Older models have covered serious mileage, so suspension and drivetrain wear are worth checking.
Compared to the Lexus brand average of 87%, the Ls400 is 4 points lower, placing it among the less reliable Lexus models.
Click any year in the table above to see detailed running costs, individual reliability data, and comparisons with similar cars.