Lexus Rx400 H -L MOT pass rate & common failures

Across 5 model years and 1,804 tests, the Lexus Rx400 H -L passes its MOT 83.2% of the time. That is 10.2 percentage points better than all cars of a similar age, which fail at 27.0%. Its most common failure areas are lighting & signalling, brakes and suspension.

Pass rate

1,804

MOT tests analysed

16.8%

Fail rate

better than

vs all cars of similar age

2005–2009

Model years covered

What the MOT record shows

Lighting & signalling dominates the failure mix at 10.4% of all tests — 3.3 points clear of brakes, so it is the first thing to check.

At component level the recurring items are position lamp, headlamp aim and wipers — position lamp alone was recorded 108 times.

Condition tracks the odometer closely. Failures run at 6.8% in the 30-60k band and 20.0% in the 150k+ band, a 13.2-point spread — more than double.

Advisories point at the next bill rather than this one: suspension was flagged on 39.6% of tests without failing them.

How it compares

Fail rate for the Lexus Rx400 H -L against all cars of a similar age.

By model year

Every Rx400 H -L model year with a usable sample. Years with their own detailed report are linked.

Lexus Rx400 H -L MOT results by model year
Year	Tests	Pass rate	Fail rate	Most common failure
2005	295	82.4%	17.6%	Lighting & signalling
2006	562	83.6%	16.4%	Lighting & signalling
2007	559	81.4%	18.6%	Lighting & signalling
2008	382	85.9%	14.1%	Lighting & signalling

Most common failures (all years)

Most common MOT failure areas — Lexus Rx400 H -L
#	Category	% of tests affected	Tests
1	Lighting & signalling	10.4%	187
2	Brakes	7.1%	128
3	Suspension	6.8%	123
4	Tyres	3.8%	69
5	Visibility	2.6%	47
6	Body, structure & corrosion	2.3%	41
7	Emissions & environmental	1.4%	26
8	Other defects	0.7%	12

Percentage of tests with at least one failure recorded in each category, across all model years.

Most common specific failures

The exact components most often recorded as failures — more specific than the categories above.

Most frequently recorded failure items — Lexus Rx400 H -L
#	Failure item	Times recorded
1	Position lamp	108
2	Headlamp aim	60
3	Wipers	44
4	Registration plate lamp(s)	42
5	Pins and bushes	39
6	Tread depth	38
7	Component mounting prescribed areas	38
8	Rbt (sp)	37

Top advisory categories

Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.

Most common MOT advisories — Lexus Rx400 H -L
#	Category	% of tests with advisory	Tests
1	Suspension	39.6%	714
2	Tyres	24.1%	434
3	Brakes	23.3%	421
4	Other defects	12.6%	227
5	Lighting & signalling	11.2%	202
6	Body, structure & corrosion	10.8%	194

Failure rate by mileage

Higher-mileage cars tend to fail more — often the most useful guide to real condition.

MOT fail rate by recorded mileage band.

Fail rate by recorded mileage — Lexus Rx400 H -L
Mileage band	Tests	Fail rate
30-60k	74	6.8%
60-90k	133	12.0%
90-120k	376	14.1%
120-150k	555	17.5%
150k+	661	20.0%

Failure rate by age

How the Rx400 H -L's MOT fail rate climbs as the cars get older.

By fuel type

Fail rate by fuel type — Lexus Rx400 H -L
Fuel	Tests	Fail rate
Hybrid	1,513	16.6%
Electric	127	17.3%
Petrol	100	20.0%
Other	61	14.8%

Trend over time

Fail rate by dataset year — Lexus Rx400 H -L
Dataset year	Tests	Fail rate
2021	409	17.4%
2022	377	14.8%
2023	378	16.1%
2024	333	18.3%
2025	307	17.6%

What to check before buying a Lexus Rx400 H -L

Lighting & signalling (10.4% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
Brakes (7.1% of tests): Pads/discs are routine wear; binding, imbalance or corroded pipes are more serious — test for pulling under braking. Typical repair: £100–£350 per axle.
Suspension (6.8% of tests): Worn drop links, bushes, springs or shocks — listen for knocks over bumps and check for uneven tyre wear. Typical repair: £150–£450 per corner.

Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.

Frequently asked questions

What is the MOT pass rate for the Lexus Rx400 H -L?

83.2% of the 1,804 Lexus Rx400 H -L MOT tests in this dataset passed, a 16.8% fail rate, across model years 2005–2009.

What does the Lexus Rx400 H -L most often fail its MOT on?

Lighting & signalling, recorded in 10.4% of tests, then brakes (7.1%).

How much does mileage affect Rx400 H -L MOT results?

Fail rates run at 6.8% for cars in the 30-60k band and 20.0% for 150k+, a 13.2-point difference.

Methodology & source. Based on 1,804 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.