Used buying guide · 2025 DVSA data
Buying a used Lexus RX400H
The Lexus RX400H passed 76.68% of its 6,751 initial MOT tests in 2025 — worse than the 77.3% average for all cars. That tells you about the model. It tells you nothing about the specific car you are looking at, which is where the expensive surprises live.
Checking a specific Lexus RX400H?
Enter its registration to see finance, write-off, stolen, mileage and keeper history before you commit.
What the MOT data shows about the Lexus RX400H
Ranked on pass rate, the Lexus RX400H sits 388 of 651 models in this data. Lexus as a marque averaged 88.42%, so this model runs 11.7 points behind its own brand. A pass rate is not a reliability score — it records whether cars met the roadworthiness standard on test day.
How age affects a used Lexus RX400H
This matters more than the headline figure when you are buying: it shows what happens to this model as it gets older.
| Age at test | Tests | Pass rate |
|---|---|---|
| 6–10 years | 1 | 0% |
| 11 years and over | 6,750 | 76.7% |
What a Lexus RX400H most often fails on
Across every Lexus RX400H that failed its 2025 MOT, these are the areas testers recorded most often. Treat it as a list of what to look at on a viewing, not as a fault list for any particular car.
| Failure area | Share of failure items |
|---|---|
| Suspension | 28.72% |
| Lamps, reflectors and electrical equipment | 22.6% |
| Brakes | 20.28% |
| Tyres | 9.93% |
| Body, chassis, structure | 7.21% |
| Visibility | 5.05% |
See the specific defects Lexus RX400H cars fail on, or the full Lexus RX400H MOT pass rate breakdown.
What the MOT record will not tell you
Knowing that Lexus RX400H failures cluster around suspension and lamps, reflectors and electrical equipment tells you what to inspect. It tells you nothing about whether the car is legally safe to buy. An MOT records that a car met a minimum standard on the day it was tested. It does not check the engine, clutch or gearbox, and it says nothing at all about the car's legal and financial history. On a 17.8-year-old average example those are the risks that cost real money:
- Outstanding finance. If money is still owed against the car, the lender may retain an interest in it after you have paid the seller.
- Insurance write-off history. A recorded Cat S or Cat N marker is permanent and affects safety, insurance and resale — and it does not appear on the V5C.
- Stolen markers. A vehicle recorded as stolen can be seized even from a buyer who bought it in good faith.
- Mileage history. Recorded readings that do not move consistently between tests are the clearest sign of a clocked car.
- Previous keepers. An unusual number of owners for the age of the car is worth asking about.
A Carpeep car history check reports all of those against the registration, plus tax status, import and export markers, scrapped status and the vehicle identity details, in one £15 report.
Check the Lexus RX400H you are looking at
One registration, one report. Finance, write-off, stolen, mileage, keepers, MOT and tax.
Other Lexus models
- Used Lexus NX 93.11% MOT pass rate
- Used Lexus CT 87.9% MOT pass rate
- Used Lexus RX 93.47% MOT pass rate
- Used Lexus UX 96.13% MOT pass rate
- Used Lexus IS 89.99% MOT pass rate
- Used Lexus IS250 79.71% MOT pass rate
Used Lexus RX400H FAQs
What should I check before buying a used Lexus RX400H?
Check the individual car rather than the model: outstanding finance, insurance write-off records, stolen markers, mileage history and the number of previous keepers. None of these appear on the V5C or in the MOT record, and a seller does not have to volunteer them. On the model itself, DVSA data for 2025 shows the Lexus RX400H passed 76.68% of its initial MOT tests.
Is the Lexus RX400H reliable?
MOT data does not measure reliability, it measures whether a car met the roadworthiness standard on the day of its test. What it does show for the Lexus RX400H is a 76.68% first-time pass rate across 6,751 tests in 2025, which is worse than the 77.3% average for all cars.
How do I check a Lexus RX400H's history?
Enter the registration of the specific car. A Carpeep car history check reports outstanding finance, write-off category, stolen markers, mileage history, previous keepers, MOT and tax status, import and export markers and scrapped status in one £15 report.
What does a Lexus RX400H usually fail its MOT on?
Across Lexus RX400H cars that failed their 2025 MOT, the most commonly recorded failure area was suspension, accounting for 28.72% of failure items. This reflects what testers recorded, not a fault specific to any one car.
MOT figures aggregated from the DVSA MOT Anonymised data set for 2025 (class 4 initial tests, retests excluded), licensed under the Open Government Licence v3.0. MOT results describe roadworthiness at test, not mechanical reliability.