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Model reliability
Lexus Ls400 reliability
The Lexus Ls400 fails its MOT less often than most cars over 10 years old: 26% of 1,032 tests failed in 2023, against 39.7% on average.
Over 10 years old
26% failed their MOT
From 1,032 MOT tests of Lexus Ls400s this age.
Where it does worse than other cars this age
Fails 53% more oftenRigid brake pipes2.6% vs 1.7%Fix about £120
Fails 79% more oftenComponent mounting prescribed areas2.5% vs 1.4%
Fails 2× as oftenIntegral vehicle structure1% vs 0.5%
Advised 60% more oftenSuspension arms19.4% vs 12.1%
Advised 31% more oftenRigid brake pipes10.9% vs 8.3%Fix about £120
Advised 87% more oftenExhaust system9.9% vs 5.3%Fix about £150
Advised 2× as oftenSub-frames8.5% vs 4.2%
Checking a Lexus Ls400 before you buy
Look at the parts above at the viewing, and read the car’s own MOT history: advisories for the same parts suggest the problem is already starting. Sweep’s free check shows every MOT, advisory and mileage reading for a registration.
Source: DVSA anonymised MOT tests 2023 (Open Government Licence v3.0). Failure rates compare this model with all cars in the same age band. Fix prices are typical independent-garage estimates.