Loading

Is the Lexus IS 350 fuel efficient?

The Lexus IS 350 is a luxury sedan that offers a balance of performance and fuel efficiency. While it may not be the most fuel-efficient vehicle in its class, the IS 350 still delivers respectable gas mileage for a car in its segment.


Fuel Economy Ratings for the Lexus IS 350


According to the U.S. Environmental Protection Agency (EPA), the 2023 Lexus IS 350 with rear-wheel drive has an estimated fuel economy of 20 miles per gallon (mpg) in the city, 28 mpg on the highway, and 23 mpg combined. The all-wheel drive version of the IS 350 has slightly lower ratings, with 19 mpg in the city, 26 mpg on the highway, and 22 mpg combined.


These fuel economy numbers are about average for a luxury midsize sedan in the IS 350's class. Competitors like the BMW 3 Series and Audi A4 have similar or slightly better EPA ratings, but the differences are relatively small.


Factors Affecting the IS 350's Fuel Efficiency



  • Engine and Transmission: The IS 350 is powered by a 3.5-liter V6 engine that produces 311 horsepower. It is paired with an 8-speed automatic transmission, which helps optimize fuel efficiency.

  • Driving Conditions: As with any vehicle, the Lexus IS 350's fuel economy can vary depending on factors like driving style, traffic conditions, and weather. More aggressive acceleration and higher speeds will result in lower fuel efficiency.

  • Maintenance: Proper maintenance, such as keeping tires properly inflated and the engine tuned, can also help maximize the IS 350's fuel efficiency.


While the Lexus IS 350 may not be the most fuel-efficient luxury sedan on the market, its EPA ratings are still respectable for a performance-oriented vehicle in its class. Drivers who prioritize a balance of power and efficiency may find the IS 350 to be a suitable choice.

Is the Lexus 350 good on gas?


Yet, despite its impressive power, the RX 350 F Sport AWD remains remarkably fuel-efficient, achieving an EPA-estimated 21 mpg in the city and 28 mpg on the highway. This remarkable fuel efficiency is a testament to Lexus' commitment to innovation and sustainability. Why Choose the 2023 Lexus RX 350 F Sport AWD?



Is Lexus expensive to maintain?


Lexus vehicles usually come with pretty average upkeep costs. According to data from RepairPal, the average annual repair cost for a Lexus vehicle is $551. Naturally, this cost can fluctuate based on vehicle model, age, driving conditions, maintenance practices, and more.



Is the Lexus 350 engine reliable?


Performance: The Lexus RX has three engines from which to choose, all of which are highly dependable. Safety: Every Lexus RX comes with various advanced safety systems to prevent collisions and increase awareness. Lexus RX 350 reliability largely stems from safe driving and minimal accidents.



What happens if I use regular gas in a Lexus IS?


Use of unleaded gasoline with an octane rating lower than what is listed for your model year vehicle could potentially result in engine knocking. If the octane rating used is less than required, damage to the engine may occur and which could void the vehicle warranty.



Does the Lexus IS 350 require premium gas?


Most Lexus models require you use at least 91 octane (premium) gasoline, while there are a few that can use 87 octane regular unleaded.



What happens if I use regular gas in a Lexus is?


Use of unleaded gasoline with an octane rating lower than what is listed for your model year vehicle could potentially result in engine knocking. If the octane rating used is less than required, damage to the engine may occur and which could void the vehicle warranty.



Is the Lexus IS350 good on gas?


The available IS 350 F Sport features fuel efficiency of 20 city MPG, 28mpg on the highway, and 22 miles per gallon combined. The highest horsepower IS model, the IS 500 Sport Performance gets 17 MPG city, 25 highway miles per gallon, and 20mpg combined.



Is Lexus a fuel efficient car?


Across the entire Lexus lineup, you'll find sedans, coupes, and SUVs that offer potent performance, sophisticated luxury, and advanced technology. Not only are Lexus vehicles engineered to a higher standard - they're also among some of the most fuel-efficient in the industry.



Is the IS350 engine reliable?


The Lexus IS350 Reliability Rating is 4.0 out of 5.0, which ranks it 9th out of 31 for luxury midsize cars. The average annual repair cost is $543 which means it has lower than average ownership costs.



Can you use regular gas on a Lexus 350?


Most 2024 and 2023 models require premium unleaded gas with an octane rating of 91 or higher. Models released between 2012 and 2022 use unleaded gasoline with an octane rating of 87 or higher. That means that while you can use premium gasoline in older RX models, it isn't required.


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.