LEXUS RX300 (2003)
Running costs, common problems, and reliability data based on 967 real MOT tests in 2024.
MOT Pass Rate
78%
Total Tests (2024)
967
Avg Mileage
124,379 mi
Est. Annual Cost
£2,397
Is the 2003 LEXUS RX300 reliable?
Average reliability. Expect some repairs as it ages. That's close to the national average of 82%. It falls below the LEXUS brand average of 87%.
At 21 years old, 78% of LEXUS RX300s from 2003 passed their MOT first time in 2024. That's based on 967 tests across the UK. The average mileage at this age is 124,379 miles.
How does the 2003 LEXUS RX300 compare?
Mileage Analysis
The average 2003 LEXUS RX300 has 124,379 miles on the clock, which is in line with the expected 155,400 miles for a 21-year-old car, suggesting normal everyday use.
Best year to buy a LEXUS RX300?
The most reliable year is the 2006 model with a 81% MOT pass rate, while the 2002 model has the lowest at 67%. The 2003 sits between the two at 78%.
How much does a 2003 LEXUS RX300 cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
LEXUS RX300 by Year
Checking a specific LEXUS RX300?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2003 LEXUS RX300
The 2003 LEXUS RX300 is a premium performance with a 2995cc petrol engine. 967 of these vehicles were MOT tested in 2024, making it a less common model in the UK market. Among all cars from 2003, the average MOT pass rate is 72%, and this model beats that benchmark.
With an average of 124,379 miles at 21 years old, LEXUS RX300 owners drive about as much as the UK average.
2003 LEXUS RX300 Fuel Costs
The 2995cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,592 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2003 LEXUS RX300?
Total estimated annual running cost is £2,397 (£200/month), broken down as £1592 fuel, £250 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 78% pass rate. Keeping on top of servicing will help avoid surprises.
LEXUS RX300 Reliability Trend
Newer LEXUS RX300s show better MOT pass rates than older ones, with an average improvement of 7 percentage points.
Buying a Used 2003 LEXUS RX300
At 21 years old, the LEXUS RX300 is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age. If you're flexible on year, the 2006 model has the highest pass rate at 81%.