MOT cost .

Lexus

Gs300

3,481 MOT tests analysed. lands in the middle of the pack — here's where Gs300s pass, fail, and end up on the retest sheet.

That's 1.2 points below the UK fleet average across our 1,988 tracked models — buyers should expect more first-time fails than the typical UK car.

Pass

74.5%

Pass-after-fix

5.9%

Fail

19.0%

Avg miles

112,627

Pass + Pass-after-fix + Fail = 100%

The picture

Gs300: middle-of-the-pack on first-time pass

Across 3,481 MOT tests, the Gs300 returns 74.5% first-time pass — below the UK fleet average. The single most-logged Major fail is a defective headlamp lens. Windscreen damage and brake pads worn below 1.5 mm round out the top three. Average tested mileage sits at 112,627, which is the lens to read those failure rankings through. If you own one and the next test is close, the ranked list below is a sensible pre-test checklist.

Top ten reasons for rejection.

  1. 01

    Headlamp reflector or lens slightly defective

    220 occurrences · 6.3% of tests

  2. 02

    Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view

    104 occurrences · 3.0% of tests

  3. 03

    a brake lining or pad worn below 1.5mm

    86 occurrences · 2.5% of tests

  4. 04

    A shock absorber damaged to the extent that it does not function or showing signs of severe leakage

    86 occurrences · 2.5% of tests

  5. 05

    Engine MIL illuminated indicating a malfunction

    85 occurrences · 2.4% of tests

  6. 06

    Tyre tread depth not in accordance with the requirements

    79 occurrences · 2.3% of tests

  7. 07

    A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning

    79 occurrences · 2.3% of tests

  8. 08

    A suspension joint dust cover severely deteriorated

    70 occurrences · 2.0% of tests

  9. 09

    Lambda coefficient outside the default limits or the range specified by the manufacturer

    69 occurrences · 2.0% of tests

  10. 10

    The aim of a headlamp is not within limits laid down in the requirements

    68 occurrences · 2.0% of tests

Counts cover Major and Dangerous defects logged at test. Advisory items excluded so this shows why a car was rejected, not just what the tester flagged in passing.

Worst-case fix budget · top 2 failures

£90–£240

If every one of this Gs300's most-logged Major fails hit at the same MOT, that's the real-world UK garage range. Reality is usually one or two items, not all of them. Open the estimator →

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Build your own retest budget.

Tools that pre-empt a retest.

Picked against this car's top failure patterns. Affiliate links to Amazon UK — we earn a small cut at no cost to you. Disclosed up-front, doesn't shape the data.

Item 01 · Amazon UK

Headlight restoration kit

Yellowed lenses fail the light-output test. A restoration kit lifts the haze in an afternoon for £20.

Search Amazon UK

Item 02 · Amazon UK

Brake pad measurement gauge

Testers fail pads under 1.5mm. A wear gauge tells you if you've got two months left or two weeks.

Search Amazon UK

Buying or keeping a Gs300?

Use the failure ranking as a pre-test checklist or a haggling lever. Treat the headline pass rate as a fleet-wide trend, not a guarantee on any individual car.

If you own a Gs300 and your last MOT looked nothing like the ranked failures above, that's normal — individual cars vary widely. The ranking shows the patterns testers flag most often across the country.