Lexus Rx400h: MOT pass rate and reliability data

The Lexus Rx400h 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 7,406 individual Lexus Rx400h 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 Rx400hs 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 Rx400h tested had covered 134,489 miles and was built around 2007.

What this means at salvage auction

Pass rate is a proxy for what a car costs to keep on the road. The Lexus Rx400h sits 0.4 points below the national average, ranked 1,579 of 2,005 models. On one bought as 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 Rx400h 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 recorded closing bids for damaged Lexus Rx400hs at UK salvage auction.

Most common MOT failures on a Lexus Rx400h

1. 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, 2.6% of tests (2.71x the national rate for this defect)
2. Parking brake inoperative on one side, 1.4% of tests (2.36x the national rate for this defect)
3. A suspension joint dust cover missing or no longer prevents the ingress of dirt etc, 4.3% of tests (2.32x the national rate for this defect)
4. A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, 4.8% of tests (2.15x the national rate for this defect)
5. Parking brake efficiency below minimum requirement, 2.4% of tests (1.83x the national rate for this defect)
6. Brake disc or drum significantly and obviously worn, 1.4% of tests (1.72x the national rate for this defect)
7. A shock absorber damaged to the extent that it does not function or showing signs of severe leakage, 1.5% of tests (1.6x the national rate for this defect)
8. A rear registration plate lamp or light source missing or inoperative in the case of a single lamp or all lamps, 1.4% of tests (1.53x the national rate for this defect)
9. Exhaust system leaking or insecure, 1.5% of tests (1.46x the national rate for this defect)
10. A suspension pin, bush or joint excessively worn, 5.3% of tests

From 7,387 DVSA-tracked Lexus Rx400h tests, 2024. DVSA testers marked 3.32% of these flagged Lexus Rx400h defects as "dangerous", meaning the tester judged the car unsafe to drive away, against 5.11% nationally.

Most common MOT advisories on a Lexus Rx400h

An advisory doesn't fail the car - the tester flags it as worth watching, but it still passes. A different list from the failures above: what testers are noting on a Lexus Rx400h before it actually fails on it.

1. 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, 7.1% of tests (4.7x the national rate for this advisory), also fails
2. Product on the lens or light source which obviously reduces light intensity or changes emitted colour to other than white or yellow, 5.2% of tests (4.67x the national rate for this advisory)
3. Vehicle structure corroded to the extent that the rigidity of the assembly is seriously reduced, 5.4% of tests (4.33x the national rate for this advisory)
4. A suspension component excessively damaged or corroded, 19.8% of tests (3.82x the national rate for this advisory)
5. A suspension pin, bush or joint excessively worn, 50.6% of tests (3.78x the national rate for this advisory), also fails
6. Number plate inscription missing or illegible, 6.3% of tests (2.39x the national rate for this advisory)
7. Exhaust system leaking or insecure, 5.8% of tests (2.03x the national rate for this advisory), also fails
8. A shock absorber damaged to the extent that it does not function or showing signs of severe leakage, 7% of tests (1.8x the national rate for this advisory), also fails
9. Brake disc or drum excessively weakened, insecure or fractured, 20% of tests (1.63x the national rate for this advisory)
10. Tyre tread depth not in accordance with the requirements, 30.8% of tests (1.16x the national rate for this advisory)

From 7,387 DVSA-tracked Lexus Rx400h tests, 2024.

Lexus Rx400h pass rate by model year

From its 2005 to its 2009 model year, the Lexus Rx400h's first-time pass rate has risen 2.1 points, from 75.7% to 77.8%, the usual pattern: a newer model year is a younger car today, so it fails less. First-time pass rate for each Lexus Rx400h year:

• 2005 Lexus Rx400h - 75.7% first-time pass, 686 tests
• 2006 Lexus Rx400h - 76% first-time pass, 1,473 tests
• 2007 Lexus Rx400h - 76.3% first-time pass, 2,146 tests
• 2008 Lexus Rx400h - 79.4% first-time pass, 1,953 tests
• 2009 Lexus Rx400h - 77.8% first-time pass, 1,047 tests

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 Rx450h - 82.6%
• Lexus Is200 - 72%

Models with a similar pass rate

• Nissan 350 Z - 76.4%
• Vauxhall Combo 2300 Sportive Td - 76.4%
• Audi A4 - 76.3%
• Mercedes-Benz 190 E - 76.3%
• Lexus Ls400 - 76.3%
• Mercedes-Benz Ml - 76.2%

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
• Do you need an HPI check on a car you know is a write-off?

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All 2,005 models ranked by MOT pass rate