Lexus RX300 reliability, MPG and running costs
Figures updated
The Lexus RX300 is a car. In 2024 MOT tests it scored 140 for reliability (100 is average), ranking 78 of 442, and 32.4% failed first time against a UK average of 28.5%. Its most common MOT failure is position lamp (5.2% of tests).
Ranked 78 of 442 cars in the 2024 MOT Reliability League
In 2024, 2,837 Lexus RX300s aged 3 to 20 had an MOT and 32.4% failed first time (UK average 28.5%). Taking age and mileage into account, the Lexus RX300 is 29% less likely to fail than the average car of the same age and mileage.
First-time fail rate
32.4%
UK 28.5%
Fail rate at 3 years
–
UK 12.7%
Average miles a year
6,300
Typical age at test: 19 years
Lexus RX300 MOT failure rate by age
Most common Lexus RX300 MOT faults
- Position lamp: not working5.2% of tests
- Malfunction indicator lamp: inoperative or indicates a malfunction5.0% of tests
- Brake pads: less than 1.5 mm thick3.3% of tests
- Component mounting prescribed areas: prescribed area excessively corroded significantly reducing structural strength3.3% of tests
- Rbt (sp): efficiency below requirements3.0% of tests
- Wipers: does not clear the windscreen effectively2.3% of tests
What the Lexus RX300 fails on
| Area | Tests failing | vs similar cars |
|---|---|---|
| Brakes | 14.2% | About average |
| Lights and electrics | 11.7% | ▼ 49% less often |
| Suspension | 10.6% | ▼ 42% less often |
| Exhaust and emissions | 6.3% | ▼ 20% less often |
| Tyres | 4.5% | ▼ 37% less often |
| Body and structure | 3.9% | ▼ 60% less often |
| Visibility | 3.9% | ▼ 49% less often |
| Steering | 1.5% | ▼ 70% less often |
| Seat belts and airbags | 1.1% | ▼ 66% less often |
| Wheels | 0.6% | ▲ 1.1× as often |
How much is road tax on a Lexus RX300?
Any Lexus RX300 first registered from April 2017 pays the standard rate of £200 a year after its first year (2026/27 rates).
Work out tax for a specific carBuying a used Lexus RX300?
Check the MOT history of the exact car: every result, advisory and mileage reading, free.
Other Lexus models
Frequently asked questions
›Is the Lexus RX300 reliable?
Its MOT record is better than average: the Lexus RX300 is 29% less likely to fail than the average car of the same age and mileage, with a reliability score of 140 in our 2024 league (100 is average).
›What are common problems with the Lexus RX300?
The most common MOT fault is “Position lamp: not working”, found in 5.2% of tests.
›How much is road tax on a Lexus RX300?
Any Lexus RX300 first registered from April 2017 pays the standard rate of £200 a year after its first year (2026/27 rates).
›How many Lexus RX300s fail their MOT?
32.4% of Lexus RX300s aged 3 to 20 failed their MOT first time in 2024.
Sources: DVSA anonymised MOT tests 2024, all versions of the Lexus RX300 combined (Open Government Licence v3.0). How we calculate the league.