CarCostCheck

LEXUS RX300 (2006)

Running costs, reliability data, and common problems from 510 real MOT tests.

Annual Cost

£2,427

£202/month

MOT Pass Rate

81%

Good

Road Tax

£430

Based on CC/year

Insurance

Grp 30-42

2995cc Petrol

Solid Option

81% pass rate, £2427/year to run. Close to the national average.

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Petrol2995cc20 years old510 tests116k miles avg

Annual Running Costs

Fuel (Petrol, 2995cc)

~30 mpg

£1,592
Road Tax

Based on 2995cc

£430
MOT Test
£55
Predicted Repairs
£350
Total per year£2,427
Per month£202/mo
Per week£47/wk

Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.

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Reliability Verdict

81% MOT pass rate(Good)
0%National avg: 82%100%

Good reliability. Occasional issues but generally solid. That's close to the national average of 82%. It falls below the LEXUS brand average of 87%.

At 20 years old, 81% of LEXUS RX300s from 2006 passed their MOT first time in 2026. That's based on 510 tests across the UK. The average mileage at this age is 116,229 miles.

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How Does It Compare?

Rank among 2006 cars139th of 575(top 24%)
Rank among LEXUS models230th of 301(top 76%)
vs national average-1%(82% avg)
vs 2006 cars average+8%(73% avg)
vs LEXUS average-6%(87% avg)

Mileage Analysis

116,229

Average miles

vs

148,000

Expected for age

The average 2006 LEXUS RX300 has 116,229 miles on the clock, which is below the expected 148,000 miles for a 20-year-old car. This suggests lighter use than average, which generally means less wear on major components.

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LEXUS RX300 by Year

YearPass RateTestsAvg Mileage
200681%510116,229 mi
200580%1,934117,423 mi
200479%2,255124,237 mi
200378%967124,379 mi
200267%359121,558 mi
200174%217119,150 mi
200066%47118,488 mi

Similar Cars to Consider

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About the 2006 LEXUS RX300

The 2006 LEXUS RX300 is a premium performance with a 2995cc petrol engine. 510 of these vehicles were MOT tested in 2026, making it a less common model in the UK market. It ranks in the top 24% of all 2006 cars for reliability.

With an average of 116,229 miles at 20 years old, LEXUS RX300 owners tend to use this car less than the typical driver.

2006 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 2006 LEXUS RX300?

Total estimated annual running cost is £2,427 202/month), broken down as £1592 fuel, £430 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 81% 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 2006 LEXUS RX300

At 20 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.

Common Issues to Watch For

Based on the 2006 LEXUS RX300's fuel type, age, and engine size, these are the most likely problem areas to check.

Timing Chain / Belt

Watch out

At 20 years old, check whether the timing belt has been replaced (typically due every 5-7 years or 60,000-100,000 miles). A snapped belt can destroy the engine.

Oil Consumption

Medium risk

Larger petrol engines can develop higher oil consumption as they age. Check the oil level and look for blue smoke from the exhaust.

Rust and Corrosion

Watch out

At 10+ years, check wheel arches, sills, subframe, and brake lines for rust. Structural corrosion is an MOT failure. Prevention is far cheaper than repair.

Suspension Bushings

Watch out

Rubber suspension bushes harden and crack with age, causing knocking noises and vague handling. A full refresh costs £300-£800 depending on the car.

Clutch Wear

Watch out

With an average of 116k miles, clutch replacement may be due (typical lifespan 60,000-100,000 miles). Budget £400-£800 for a new clutch kit.

Brake Discs and Pads

Medium risk

High-mileage cars often need brake disc replacement, not just pads. A full set of discs and pads costs £200-£500 per axle.

Service History

Low risk

Always request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.

Running Costs Compared

How the 2006 LEXUS RX300 stacks up against similar cars for annual running costs, insurance, and tax.

CarPass RateFuel/yrTax/yrInsuranceTotal/yr
LEXUS RX300(2006)81%£1592£430Grp 30-42£2427
LAND ROVER FREELANDER(2007)75%£1592£250Grp 35-50£2397-£30
SAAB 9-3(2007)76%£1592£250Grp 30-42£2397-£30
LAND ROVER RANGE ROVER SPORT(2008)82%£1592£250Grp 30-42£2247-£180
MERCEDES E(2004)78%£1592£250Grp 35-50£2397-£30

Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.

Related Lexus Models

Explore other Lexus cars or similar models in the same category.

Related Guides

In-depth articles relevant to the Lexus Rx300.

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