Is the Lexus GS reliable?

On MOT evidence the Lexus GS is well above average. It passes 87.8% of tests once age and mileage are accounted for, against a national average of 72.3%. That figure covers 61% of the national age and mileage range, which is enough to quote but not to rank. This measures how often the car meets the MOT standard, not how often it breaks down or what a repair costs.

What is the most common MOT failure on a Lexus GS?

The item recorded most often is "Tyre tread depth not in accordance with the requirements", which appears in 18.5% of failed Lexus GS tests. Because one failed test can list several items, these shares do not add up to 100%.

What do testers most often warn about on a Lexus GS?

The most common advisory is "Tyre tread depth not in accordance with the requirements", noted on 22.5% of all Lexus GS tests. An advisory is not a failure: it flags something that will likely need attention before the next test.

What mileage does a Lexus GS usually have at its MOT?

The average odometer reading recorded at test is 87,085 miles. This is the mileage across all tested examples of every age, not an annual figure, so treat it as a description of the fleet rather than a target for one car.

Which Lexus GS years are the most reliable?

Going by MOT pass rate, Lexus GS cars first registered 2017–2019 do best at 91.3%, and those registered 2010 and earlier do worst at 76.5%. But that ordering is mostly age, not build year: almost every model passes less often as it wears, so the newest cars top this list whatever they are. A specific year looking strong here means little on its own; the failure items above, and the individual car's own MOT history, tell you far more.

Does a Lexus GS get harder to pass as it ages?

Yes. At 6 to 8 years old, 91.3% of Lexus GS tests pass. By fifteen years or more, that falls to 76.5%. Nearly every model follows this pattern, which is why comparing raw pass rates between models is misleading unless age is accounted for.

Are most Lexus GS models petrol or diesel?

Of the Lexus GS cars tested, 76% are hybrid, 19% are petrol, 3% are other. Fuel type affects which items tend to fail, particularly emissions and exhaust components.

Model reliability file

Lexus GS MOT pass rate & common failures

From 3,487 recorded MOT tests of the Lexus GS, published by DVSA.

Data updated 29 July 2026

Quick answer

The Lexus GS passes 87.8% of MOT tests once results are adjusted for the age and mileage of the cars tested, against a national average of 72.3%. That is well above average. Based on 3,487 tests. Its most commonly recorded failure is tyre tread depth not in accordance with the requirements, which appears in 18.5% of failed tests. Cars of this model average 87,085 miles on the odometer when tested.

At a glance

Pass rate, adjusted for age and mileage

87.8%national average72.3%unadjusted88.2%range covered61%

The GS is 15.5 percentage points above the national pass rate once age and mileage are accounted for, which is well above average. The unadjusted figure is 88.2%; the difference is what the age and mileage of this model’s fleet was hiding.

DVSA recorded wording

Most common failure items

Share of failed Lexus GS tests in which each item was recorded. One failed test often lists several items, so these do not sum to 100%.

1.Tyre tread depth not in accordance with the requirements18.5%
60 occurrencesTyre worn close to the legal limit explained
2.A tyre cords visible or damaged18.5%
60 occurrencesTyre ply or cord exposed, or the casing separating explained
3.A tyre seriously damaged15.4%
50 occurrencesTyre damaged or deteriorated explained
4.A brake lining or pad worn below 1.5mm13.2%
43 occurrencesBrake drum or shoe worn or contaminated explained
5.A tyre pressure monitoring system malfunctioning or obviously inoperative11.4%
37 occurrencesTyre pressure monitoring system inoperative explained
6.A shock absorber damaged to the extent that it does not function or showing signs of severe leakage8.9%
29 occurrencesShock absorber defective explained
7.Wiper blade missing or obviously not clearing the windscreen8.0%
26 occurrencesWiper or washer not working properly explained
8.Brake pipe damaged or excessively corroded6.8%
22 occurrencesBrake pipe corroded explained
9.A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning5.8%
19 occurrencesLamp not working explained
10.A wheel with a loose or missing wheel nut, bolt or stud4.6%
15 occurrencesWheel nut, bolt or stud missing, loose or damaged explained

Warnings without a failure

Most common advisories

Share of all Lexus GS tests carrying each advisory. The denominator differs from the failure list above because an advisory can be issued on a car that passed.

1.Tyre tread depth not in accordance with the requirements22.5%
786 testsTyre worn close to the legal limit explained
2.A tyre seriously damaged9.6%
333 testsTyre damaged or deteriorated explained
3.Brake disc or drum excessively weakened, insecure or fractured8.2%
285 testsBrake disc worn, pitted or scored explained
4.A brake lining or pad worn below 1.5mm6.4%
222 testsBrake drum or shoe worn or contaminated explained
5.Brake pipe damaged or excessively corroded5.0%
176 testsBrake pipe corroded explained
6.A shock absorber damaged to the extent that it does not function or showing signs of severe leakage4.2%
147 testsShock absorber defective explained
7.A suspension pin, bush or joint excessively worn3.7%
129 testsSuspension arm bush worn explained
8.A tyre seriously damaged3.4%
119 testsTyre damaged or deteriorated explained

The rest of the record

Everything else recorded on the Lexus GS

The 15 other defects testers recorded on this model, beyond the most common listed above. Each links to what it means and what it takes to put right.

How wear changes the picture

GS pass rate by age and registration year

How often the Lexus GS passes at each age, with the years those cars were first registered. Tests are from 2025, so a car aged 6 to 8 was first used in 2017–2019.

6–8 yrsreg. 2017–201991%

9–11 yrsreg. 2014–201690%

12–14 yrsreg. 2011–201387%

15+ yrsreg. 2010 and earlier76%

Read this as an age curve rather than a verdict on particular model years. Nearly every car passes less often as it gets older, so a newer GS outscoring an older one says more about wear than about how that year’s cars were built. Bands holding too few tests to be meaningful are omitted rather than shown as a rate.

What gets tested

The GS fleet

Average mileage recorded at test: 87,085
Fuel mix of tested cars: Hybrid75.9%
Petrol19.2%
Other2.9%
Electric1.9%

Trim names grouped into this model (17)

Recorded exactly as DVSA holds them. Trim-level names are rolled up so one model is not split across a dozen thin pages.

GS 250 F SPORT AUTO
GS 250 LUXURY AUTO
GS 300 SE AUTO
GS 300H F SPORT CVT
GS 300H LUXURY CVT
GS 300H SE CVT
GS 350
GS 350 F-SPORT
GS 430 AUTO
GS 450 H
GS 450H F SPORT CVT
GS 450H LUXURY CVT
GS 450H PREMIER CVT
GS 450H SE A
GS 450H SE CVT
GS 450H SE-L A
GS 450H SE-L CVT

Check a specific Lexus GS

A model average tells you the pattern. Its own MOT record tells you the car.

Compare within the range

Other Lexus models

Lexus NX — 89.3% adjusted
Lexus CT — 85.0% adjusted
Lexus RX — 88.2% adjusted
Lexus UX — 93.7% unadjusted
Lexus IS — 84.3% adjusted
Lexus IS250 — 73.7% unadjusted
All Lexus models

Similar test volumes

Compare against other makes

Ssangyong Rexton — 67.6% adjusted, ranked 200
Nissan Serena — 76.5% adjusted, ranked 92
Fiat Qubo — 62.5% adjusted, ranked 242
Vauxhall Movano — 67.7% adjusted, ranked 198

Common questions

Is the Lexus GS reliable?: On MOT evidence the Lexus GS is well above average. It passes 87.8% of tests once age and mileage are accounted for, against a national average of 72.3%. That figure covers 61% of the national age and mileage range, which is enough to quote but not to rank. This measures how often the car meets the MOT standard, not how often it breaks down or what a repair costs.
What is the most common MOT failure on a Lexus GS?: The item recorded most often is "Tyre tread depth not in accordance with the requirements", which appears in 18.5% of failed Lexus GS tests. Because one failed test can list several items, these shares do not add up to 100%.
What do testers most often warn about on a Lexus GS?: The most common advisory is "Tyre tread depth not in accordance with the requirements", noted on 22.5% of all Lexus GS tests. An advisory is not a failure: it flags something that will likely need attention before the next test.
What mileage does a Lexus GS usually have at its MOT?: The average odometer reading recorded at test is 87,085 miles. This is the mileage across all tested examples of every age, not an annual figure, so treat it as a description of the fleet rather than a target for one car.
Which Lexus GS years are the most reliable?: Going by MOT pass rate, Lexus GS cars first registered 2017–2019 do best at 91.3%, and those registered 2010 and earlier do worst at 76.5%. But that ordering is mostly age, not build year: almost every model passes less often as it wears, so the newest cars top this list whatever they are. A specific year looking strong here means little on its own; the failure items above, and the individual car's own MOT history, tell you far more.
Does a Lexus GS get harder to pass as it ages?: Yes. At 6 to 8 years old, 91.3% of Lexus GS tests pass. By fifteen years or more, that falls to 76.5%. Nearly every model follows this pattern, which is why comparing raw pass rates between models is misleading unless age is accounted for.
Are most Lexus GS models petrol or diesel?: Of the Lexus GS cars tested, 76% are hybrid, 19% are petrol, 3% are other. Fuel type affects which items tend to fail, particularly emissions and exhaust components.

How this was worked out

Method and limits

Figures come from the DVSA anonymised MOT testing dataset, published under the Open Government Licence. Only class 4 initial tests are counted: retests are excluded so a car appears once, and abandoned tests are excluded entirely. The adjusted rate is directly standardised across twenty-five age and mileage bands and reweighted onto the national distribution, so this model is compared against cars that have lived a similar life rather than against a younger or lighter-used fleet.

An MOT measures whether a car met a legal standard on the day. It is not a breakdown record, a service history or a running-cost estimate, and a pass rate is a property of a fleet rather than a prediction about one car.