Lexus LS400 MOT Pass Rate & Official DVSA Failure Statistics

Lexus LS400 MOT History and Failure Rates vs UK National Average

The Lexus LS400 passed on its first attempt in 77.2%, and its overall record sits −0.5 percentage points below the national average for all cars. These figures come from every recorded DVSA MOT test for the Lexus LS400 in the 2023–2025 data: 292 tests across 1 model years (2000–2000). A test still carries exactly one pass or fail verdict.

Figures are computed from every recorded DVSA test for this model in the 2023–2025 data.

Most Common Lexus LS400 MOT Problems by Failure Category

Every MOT failure a tester records belongs to one inspection section of the DVSA manual. For the Lexus LS400, the Lamps, reflectors and electrical equipment section leads the record — the breakdown below shows where the recorded failures cluster, then the exact strings behind the three biggest sections.

Shares are over the Lexus LS400's recorded defect strings, merged across its year pages.

Top Recorded Lexus LS400 DVSA MOT Test Statistics & Defect Descriptions

The descriptions below are the exact DVSA failure strings testers recorded most often for the Lexus LS400, each with how many of the model's 292 tests it was noted on.

• "Windscreen damaged but not adversely affecting driver's view" (Minor) — noted on about 16 Lexus LS400 tests, 5.5% of the model's MOT record.
• "Registration plate lamp(s) inoperative in the case of multiple lamps or light sources" (Minor) — noted on about 14 Lexus LS400 tests, 4.8% of the model's MOT record.
• "Battery(ies) insecure but not likely to fall from carrier" (Minor) — noted on about 12 Lexus LS400 tests, 4.1% of the model's MOT record.
• "Catalyst emissions Lambda reading after 2nd fast idle outside specified limits" (Major) — noted on about 10 Lexus LS400 tests, 3.4% of the model's MOT record.
• "Position lamp not working" (Major) — noted on about 9 Lexus LS400 tests, 3.1% of the model's MOT record.
• "Ball joint dust cover severely deteriorated" (Minor) — noted on about 7 Lexus LS400 tests, 2.4% of the model's MOT record.

Best and Worst Lexus LS400 Model Years by Pass Rate

The strongest Lexus LS400 model year on record is 2000 (80.5% across 292 tests), and the weakest is 2000 (80.5%). Years with fewer than 50 recorded tests are excluded, so these are the years with enough MOT history to mean something.

Newest model year first. Only years with at least 50 recorded tests are listed.

Pre-MOT Inspection Checklist for Lexus LS400 Owners

These checks follow this Lexus LS400's own most-recorded failure strings, starting with what a tester is most likely to flag on a Lexus LS400.

• the windscreen — “windscreen damaged”

  Check the driver’s side of the screen within the swept area for chips and cracks; anything larger than 10mm in the driver’s central view is a fail. Most chips can be resin-repaired for far less than a new screen.

• the lights — “registration plate lamp(s) inoperative in the case of multiple lamps or light sources”

  Switch everything on and walk round the car: both headlamps on dip and main, every indicator, both brake lights, reverse, fog and the two number-plate lamps. A bulb is a few pounds and a five-minute job.

• the battery — “battery(ies) insecure”

  Check the battery is secure and its terminals are clean and tight — a loose battery is a fail on its own, and a weak one shows up as slow cranking on a cold morning.

Derived from the DVSA failure strings testers recorded for the Lexus LS400. A check that finds nothing means the item is likely fine, not that the test is guaranteed.

Frequently Asked Questions: Lexus LS400 MOT & Reliability