Lexus RX300 MOT pass rate: 72.8% (2,746 tests, 2025)

The Lexus RX300 passed 72.8% of its 2,746 MOT tests in 2025 — 4.7 points below the UK average of 77.5%. The median tested example was 21 years old with 119,996 miles on the clock.

72.8%Pass rate (2025)

2,746MOT tests analysed

119,996 miMedian mileage at test

21 yrsMedian age at test

How the RX300 compares

Lexus RX300

72.8%

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 RX300

Across failed and rectified tests in 2025, these vehicle systems produced the most defects on the RX300:

#	System	Defects recorded	Share
1	Brakes	615	28.7%
2	Suspension	594	27.7%
3	Lamps, reflectors and electrical equipment	360	16.8%
4	Noise, emissions and leaks	214	10.0%
5	Tyres	140	6.5%
6	Body, chassis, structure	137	6.4%

Pre-MOT checklist for RX300 owners

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

Feel for a spongy pedal or pulling to one side; check pad wear through the wheel spokes if visible
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
A blowing exhaust or visible smoke will fail; warm the engine fully before the test
Check tread with the 20p test and inspect sidewalls for cracking — tyres close to the limit are the country’s most common advisory

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

RX300 pass rate by registration year

Registration year	Tests	Pass rate	Vs same-age	Median mileage
2003	1,540	74.7%	+9.7 pts	121,771
2004	3,513	73.8%	+9.5 pts	118,532
2005	3,212	73.8%	+9.3 pts	117,500

Check a specific RX300 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 RX400H76.7% pass rate · 6,749 tests

FAQs

What is the MOT pass rate for a Lexus RX300?

In 2025, 72.8% of 2,746 first MOT tests on the Lexus RX300 were passes (UK average: 77.5%). Data: DVSA anonymised MOT results.

What does the RX300 fail its MOT on most?

The biggest defect group is brakes (28.7% of its recorded defects), followed by suspension.

Is the Lexus RX300 reliable?

MOT pass rate is one lens on durability: at 72.8% it performs below the national average at a median age of 21 years and 119,996 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.