Lexus Is MOT pass rate: 90.0% (12,847 tests, 2025)

The Lexus Is passed 90.0% of its 12,847 MOT tests in 2025 — 12.5 points above the UK average of 77.5%. The median tested example was 9 years old with 73,773 miles on the clock.

90.0%Pass rate (2025)

12,847MOT tests analysed

73,773 miMedian mileage at test

9 yrsMedian age at test

How the Is compares

Lexus Is

90.0%

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 Is

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

#	System	Defects recorded	Share
1	Tyres	1,030	48.9%
2	Lamps, reflectors and electrical equipment	437	20.7%
3	Brakes	339	16.1%
4	Visibility	196	9.3%
5	Suspension	106	5.0%

Pre-MOT checklist for Is owners

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

Check tread with the 20p test and inspect sidewalls for cracking — tyres close to the limit are the country’s most common advisory
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
Replace smeared wiper blades and top up washer fluid — both are test items
Bounce each corner and listen for clonks over speed bumps — suspension is this model’s (and the UK’s) top failure system

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

Is pass rate by registration year

Registration year	Tests	Pass rate	Vs same-age	Median mileage
2014	9,014	88.8%	+13.0 pts	84,831
2015	8,299	90.1%	+11.4 pts	75,206
2016	5,883	90.0%	+8.6 pts	65,266
2017	4,574	91.9%	+7.9 pts	55,192
2018	4,299	92.9%	+6.5 pts	49,642
2019	3,479	92.2%	+3.8 pts	43,821
2020	1,689	93.7%	+3.8 pts	30,334

Check a specific Is 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 IS25079.7% pass rate · 9,043 tests RX450H81.1% pass rate · 6,815 tests RX400H76.7% pass rate · 6,749 tests IS20074.3% pass rate · 5,143 tests

FAQs

What is the MOT pass rate for a Lexus Is?

In 2025, 90.0% of 12,847 first MOT tests on the Lexus Is were passes (UK average: 77.5%). Data: DVSA anonymised MOT results.

What does the Is fail its MOT on most?

The biggest defect group is tyres (48.9% of its recorded defects), followed by lamps, reflectors and electrical equipment.

Is the Lexus Is reliable?

MOT pass rate is one lens on durability: at 90.0% it performs above the national average at a median age of 9 years and 73,773 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.