Lexus Ls400: MOT pass rate and reliability data

The Lexus Ls400 fails its first MOT more often than the average UK car, by 0.4 percentage points. These figures come from the DVSA's full year of anonymised MOT results, covering 892 individual Lexus Ls400 tests. Nothing here is an estimate or a survey.

The numbers

What this means if you are buying one

A 76.3% first-time pass rate means roughly 24 in every 100 Lexus Ls400s presented for MOT fail on the first attempt. That is worse than average, so budget for remedial work and treat a fresh 12-month MOT as a genuine selling point rather than a given. The average Lexus Ls400 tested had covered 144,997 miles and was built around 1997.

What this means at salvage auction

Pass rate is a proxy for what a car costs to keep on the road. On a Lexus Ls400 bought as a repairable salvage, assume the mechanical side needs more than the visible accident damage, and pad your repair estimate accordingly.

Before you bid: run the lot through the analyzer, check the car's own record, check the mileage, decode the VIN, and if it carries a marker use the write-off value calculator. Or compare it against another model.

Looking at a specific Lexus Ls400 rather than the model in general? The free check covers its MOT and mileage history, and the full HPI report confirms the insurance write-off category, outstanding finance and whether it is recorded stolen, from licensed data for 5 credits. Already own one that has been damaged? Work out whether fixing it beats selling it with the repair or scrap calculator, and see what damaged Lexus Ls400s actually sold for at UK salvage auction.

Most common MOT failures on a Lexus Ls400

1. Lambda coefficient outside the default limits or the range specified by the manufacturer, 3.2% of tests (7.99x the national rate for this defect)
2. An induction or exhaust leak that could affect emissions levels, 0.9% of tests (6.96x the national rate for this defect)
3. The strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is significantly reduced or inadequately repaired, 4.7% of tests (5.62x the national rate for this defect)
4. Emissions test unable to be completed, 1% of tests (3.22x the national rate for this defect)
5. Parking brake efficiency less than 50% of the required value, 0.9% of tests (3.21x the national rate for this defect)
6. Brake pipe damaged or excessively corroded, 1.9% of tests (2.31x the national rate for this defect)
7. Exhaust system leaking or insecure, 1.5% of tests (2.03x the national rate for this defect)
8. The aim of a headlamp is not within limits laid down in the requirements, 2.8% of tests (1.57x the national rate for this defect)
9. A suspension pin, bush or joint excessively worn, 5.3% of tests (1.44x the national rate for this defect)
10. Parking brake efficiency below minimum requirement, 1.3% of tests (1.33x the national rate for this defect)

From 2,466 DVSA-tracked Lexus Ls400 tests, 2024. DVSA testers marked 2.85% of these flagged Lexus Ls400 defects as "dangerous", meaning the tester judged the car unsafe to drive away, against 4.97% nationally.

Other Lexus models

• Lexus Ct - 88.4%
• Lexus Nx - 93.1%
• Lexus Rx - 94%
• Lexus Is - 89.7%
• Lexus Ux - 95.8%
• Lexus Is250 - 80%
• Lexus Rx400h - 76.3%
• Lexus Rx450h - 82.6%

Models with a similar pass rate

• Audi A4 - 76.3%
• Lexus Rx400h - 76.3%
• Mercedes-Benz 190 E - 76.3%
• Mercedes-Benz Ml - 76.2%
• BMW 728 - 76.2%
• Volvo V40 - 76.1%

If this car is a salvage or write-off

• What does Cat N mean? Category N explained
• What does Cat S mean? Category S explained
• Cat S vs Cat N: the real differences

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