Lexus RX400H MOT Pass Rate & Official DVSA Failure Statistics

Lexus RX400H MOT History and Failure Rates vs UK National Average

The Lexus RX400H passed on its first attempt in 77.8%, and its overall record sits +0.2 percentage points above the national average for all cars. These figures come from every recorded DVSA MOT test for the Lexus RX400H in the 2023–2025 data: 25,530 tests across 5 model years (2005–2009). 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 RX400H MOT Problems by Failure Category

Every MOT failure a tester records belongs to one inspection section of the DVSA manual. For the Lexus RX400H, 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 RX400H's recorded defect strings, merged across its year pages.

Top Recorded Lexus RX400H DVSA MOT Test Statistics & Defect Descriptions

The descriptions below are the exact DVSA failure strings testers recorded most often for the Lexus RX400H, each with how many of the model's 25,530 tests it was noted on.

• "Ball joint dust cover severely deteriorated" (Minor) — noted on about 1,556 Lexus RX400H tests, 6.1% of the model's MOT record.
• "Registration plate lamp(s) inoperative in the case of multiple lamps or light sources" (Minor) — noted on about 1,465 Lexus RX400H tests, 5.7% of the model's MOT record.
• "Position lamp not working" (Major) — noted on about 1,448 Lexus RX400H tests, 5.7% of the model's MOT record.
• "Joints constant velocity boot severely deteriorated" (Minor) — noted on about 924 Lexus RX400H tests, 3.6% of the model's MOT record.
• "Linkage ball joint dust cover ball joint dust cover severely deteriorated" (Minor) — noted on about 655 Lexus RX400H tests, 2.6% of the model's MOT record.
• "Windscreen damaged but not adversely affecting driver's view" (Minor) — noted on about 574 Lexus RX400H tests, 2.2% of the model's MOT record.

Best and Worst Lexus RX400H Model Years by Pass Rate

The strongest Lexus RX400H model year on record is 2009 (82.9% across 3,624 tests), and the weakest is 2005 (78.5%). The gap between them is 4.4 points. Years with fewer than 50 recorded tests are excluded, so these are the years with enough MOT history to mean something.

Lexus RX400H reliability is improving in the DVSA data — the pass rate moves about 1.1 points a year across the most recent model years shown above.

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

Pre-MOT Inspection Checklist for Lexus RX400H Owners

These checks follow this Lexus RX400H's own most-recorded failure strings, starting with what a tester is most likely to flag on a Lexus RX400H.

• the suspension joints — “ball joint dust cover severely deteriorated”

  With the car parked on level ground, rock the top of each front wheel in and out while someone watches the suspension arm. Clunks, or rubber boots split and greasy, are what testers record here.

• 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 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.

Derived from the DVSA failure strings testers recorded for the Lexus RX400H. A check that finds nothing means the item is likely fine, not that the test is guaranteed.

Frequently Asked Questions: Lexus RX400H MOT & Reliability