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How many miles per gallon does a 2004 Lexus RX300 get?

Typically, the 2004 Lexus RX300 achieves about 19 mpg in the city and 23 mpg on the highway, with some variation between front-wheel-drive and all-wheel-drive models.


The RX300 uses a 3.0-liter V6 paired with a four-speed automatic transmission. For 2004, buyers could choose front-wheel drive (FWD) or all-wheel drive (AWD), and EPA fuel economy estimates differ by drivetrain. This article outlines the typical figures and the main factors that influence real-world mileage.


EPA estimates by drivetrain


Below is a concise breakdown of the typical EPA fuel economy figures reported for the 2004 RX300, reflecting common drivetrain configurations. Real-world results can differ due to maintenance and driving style.



  • 2004 RX300 FWD: about 19 miles per gallon in the city and 23 miles per gallon on the highway.

  • 2004 RX300 AWD: about 18 miles per gallon in the city and 22-23 miles per gallon on the highway.


These figures are guidelines from EPA data and are representative of average conditions; individual results may vary.


What affects fuel economy in the RX300?


Several factors influence MPG for older SUVs like the RX300, including maintenance, tire condition and pressure, driving habits, cargo load, climate control use, and road conditions. Real-world mpg often differs from EPA estimates due to these variables.


Real-world vs EPA figures


Owners frequently report mileage that is lower than or close to EPA estimates, depending on city versus highway driving, traffic, and how well the vehicle has been maintained over its life.


Maintenance tips to maximize mpg


Keeping the vehicle well maintained helps sustain better fuel economy. Regular oil changes, air filter replacements, correct tire pressures, and using the recommended fuel grade can all contribute to more consistent MPG on an aging RX300.


Summary


The 2004 Lexus RX300 typically delivers fuel economy in the high teens to low 20s, with FWD models around 19/23 mpg and AWD models around 18/22-23 mpg. Real-world numbers vary with driving style and condition, but these ranges represent common performance for this model year.

Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.