What year Lexus Is is most reliable?

Based on MOT first-test pass rates, the 2020 Lexus Is has the highest pass rate at 93.1%, out of 556 vehicles tested.

What are the most common Lexus Is MOT failures?

The most common Lexus Is MOT failures vary by year. Check the individual year pages for detailed defect breakdowns — links in the table above.

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Lexus Is — Reliability by Year

13,801 vehicles · MOT data 2013–2020 · first-test pass rates

This page shows MOT first-test pass rates for each year the Lexus Is was manufactured — click any year to explore that cohort in detail. Trying to decide which year to buy? See the full buying guide →

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Best pass rate year

2020

93.1% pass rate · 556 vehicles

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Lowest pass rate year

2013

87.5% pass rate · 467 vehicles

Year	Pass rate	Avg mileage	Vehicles
2020	93.1%	30,240 mi	556
2019	91.5%	39,175 mi	1,147
2018	92.7%	41,039 mi	1,421
2017	92.1%	43,235 mi	1,624
2016	90.4%	49,047 mi	2,074
2015	90.3%	54,166 mi	3,090
2014	89.3%	60,624 mi	3,422
2013	87.5%	63,818 mi	467

Which year Lexus Is is most reliable?

MOT pass rate by year of manufacture — averaged across each vehicle's lifetime of tests.

Tests range from an average of 30,240 miles (newest year) to 63,818 miles (oldest year). Older years naturally accumulate more tests at higher mileages — see the mileage-normalised breakdown →

Trying to decide which year to buy?

We've done the full analysis — which years to look for, which to avoid, and where to find the best value for reliability on a Lexus Is.

See the buying guide →

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Check any UK registration — free MOT history and risk insights.