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How many miles per gallon does a 2018 Lexus RC 300 get?

The 2018 Lexus RC 300 achieves roughly 25 miles per gallon overall, with EPA estimates showing about 22 mpg city / 30 mpg highway for rear-wheel-drive models and about 21 mpg city / 28 mpg highway for all-wheel-drive models.


What the EPA says about fuel economy


The RC 300 was offered with two drivetrain configurations for the 2018 model year, and fuel economy varies accordingly. EPA ratings are based on standardized city and highway tests and can differ from real-world results depending on driving conditions.


Below are the official EPA figures by drivetrain configuration to give you a clear apples-to-apples comparison:



  • Rear-wheel drive (RWD): 22 mpg city, 30 mpg highway, 25 mpg combined

  • All-wheel drive (AWD): 21 mpg city, 28 mpg highway, 24 mpg combined


In practice, most drivers see fuel economy in the mid-20s in mixed driving. Real-world mpg can be influenced by factors such as traffic, terrain, and maintenance.


What affects mpg on the 2018 RC 300


Several variables can swing fuel economy away from the EPA numbers. Being aware of them can help you maximize efficiency.



  • Driving style: gentler acceleration and steadier speeds typically boost mpg.

  • Tire pressure and condition: underinflated tires raise rolling resistance and hurt efficiency.

  • Vehicle weight: carrying extra cargo or passengers can lower mpg.

  • Maintenance: timely oil changes, air filter replacements, and using the recommended fuel grade support optimal performance.

  • Environmental factors: urban stop-and-go traffic, hills, and high speeds reduce efficiency.


Tips to improve efficiency include using Eco or Normal driving modes when available, keeping tires inflated to the manufacturer’s recommended pressure, and planning routes to minimize unnecessary stops. While the EPA provides a baseline, real-world results depend on how you drive and how the car is configured.


Summary


The 2018 RC 300’s mpg depends on drivetrain: about 22/30/25 (city/highway/combined) for RWD and 21/28/24 for AWD, with an overall rough target of around 25 mpg combined. Real-world results will vary, but mindful driving and proper maintenance can help you approach those figures.

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.