Lexus RX400H MOT pass rate: 76.7% (6,749 tests, 2025)

The Lexus RX400H passed 76.7% of its 6,749 MOT tests in 2025 — right on the UK average of 77.5%. The median tested example was 18 years old with 136,253 miles on the clock.

76.7%Pass rate (2025)

6,749MOT tests analysed

136,253 miMedian mileage at test

18 yrsMedian age at test

How the RX400H compares

Lexus RX400H

76.7%

UK average (all Class 4 vehicles)

77.5% across 33.1 million tests

Lexus average (all models)

88.0%

What fails most on the Lexus RX400H

Across failed and rectified tests in 2025, these vehicle systems produced the most defects on the RX400H:

#	System	Defects recorded	Share
1	Suspension	1,289	29.6%
2	Lamps, reflectors and electrical equipment	1,013	23.3%
3	Brakes	911	20.9%
4	Tyres	446	10.3%
5	Body, chassis, structure	322	7.4%
6	Visibility	227	5.2%

Pre-MOT checklist for RX400H owners

Based on the failure profile above, ten minutes with a torch before your test removes the most likely fail items:

Bounce each corner and listen for clonks over speed bumps — suspension is this model’s (and the UK’s) top failure system
Walk round with all lights on: one blown bulb is the most avoidable fail there is
Feel for a spongy pedal or pulling to one side; check pad wear through the wheel spokes if visible
Check tread with the 20p test and inspect sidewalls for cracking — tyres close to the limit are the country’s most common advisory
Look underneath for corrosion around sills and subframes, especially on older cars

Check the engine before the tester does

A stored fault code with the engine light on is an automatic Major defect. Scan and clear resolved faults before booking.

Topdon OBD2 scannersTopdon diagnostic scanners with full-system readouts
XTOOL diagnostic toolsXTOOL code readers for petrol and diesel cars
Autel UK testersAutel professional-grade diagnostic testers

RX400H pass rate by registration year

Registration year	Tests	Pass rate	Vs same-age	Median mileage
2005	2,065	74.1%	+9.6 pts	145,130
2006	4,313	76.7%	+12.3 pts	139,256
2007	6,322	77.2%	+12.1 pts	134,901
2008	5,827	79.3%	+14.1 pts	126,092
2009	3,091	79.8%	+13.5 pts	118,064

Check a specific RX400H before you buy

Pass rates describe the model; they can’t tell you about the one car you’re looking at. Run its plate through our free MOT history check to see its personal record of failures, advisories and mileage readings.

Other Lexus models

CT87.9% pass rate · 30,360 tests NX92.7% pass rate · 28,217 tests RX93.9% pass rate · 16,281 tests UX96.1% pass rate · 14,352 tests Is90.0% pass rate · 12,847 tests IS25079.7% pass rate · 9,043 tests RX450H81.1% pass rate · 6,815 tests IS20074.3% pass rate · 5,143 tests

FAQs

What is the MOT pass rate for a Lexus RX400H?

In 2025, 76.7% of 6,749 first MOT tests on the Lexus RX400H were passes (UK average: 77.5%). Data: DVSA anonymised MOT results.

What does the RX400H fail its MOT on most?

The biggest defect group is suspension (29.6% of its recorded defects), followed by lamps, reflectors and electrical equipment.

Is the Lexus RX400H reliable?

MOT pass rate is one lens on durability: at 76.7% it performs below the national average at a median age of 18 years and 136,253 miles. Always check the individual car's history too.

Source: DVSA Anonymised MOT tests and results, 2025 extract (Class 4 initial tests only; retests excluded). Contains public sector information licensed under the Open Government Licence v3.0. Figures rounded to one decimal place.