19 MPG combined won’t top any fuel-sipping charts, but it’s what you get with a 2024 Lexus LX 600. People don’t buy this vehicle for its low running costs. They buy it for its blend of luxury, capability, and legendary Toyota reliability. The LX buyer wants space and presence, and the ability to traverse challenging terrain, often with a family. They understand the tradeoff of a large, body-on-frame SUV, and 19 MPG is simply the price of entry.

City and highway performance

The EPA estimates for the 2024 Lexus LX 600 equipped with the 3.4L twin-turbo V6 are 17 MPG in the city and 22 MPG on the highway. The city figure reflects the fuel consumption expected in stop-and-go traffic, where the LX’s weight and large engine demand more fuel. The 22 MPG highway rating is better, and achievable during steady cruising thanks to the smooth-shifting 10-speed automatic transmission. These numbers represent a functional baseline for judging real-world fuel use.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2024 Lexus LX 600 is $3,050. This figure is based on driving 15,000 miles per year and using national average fuel prices. It’s a large sum, highlighting the ongoing cost of ownership for this size and capability of vehicle. Understanding this number is important for potential buyers, as it provides a clear picture of the financial commitment in owning an LX 600. It is based on estimates at the time of calculation and can change with fluctuations in gas prices.

Real-world expectations

The EPA estimates provide a standardized benchmark, but your fuel economy with the LX 600 will vary based on driving style, terrain, and load. Expect to see figures slightly lower than 17 MPG in consistently heavy city traffic, especially during cold weather when the engine works harder to reach optimal operating temperature. On longer highway trips, you might achieve numbers closer to or even slightly exceeding 22 MPG if you maintain a consistent speed and avoid aggressive acceleration. Towing, especially heavy loads, will significantly decrease fuel efficiency, potentially dropping into the single digits for short periods, sometimes near 10 mpg or less with substantial weight.

Some LX drivers looking for more efficiency have considered all Lexus fuel economy data.

How it compares

The 2024 Lexus LX 600’s fuel economy is generally in line with its direct competitors. The Cadillac Escalade with its 6.2L V8 achieves a similar 16 city / 21 highway / 18 combined MPG. The Lincoln Navigator, equipped with a 3.5L twin-turbo V6, nets 17 city / 23 highway / 19 combined MPG, mirroring the LX’s combined figure but with a slightly better highway rating. The Land Rover Range Rover, known for its off-road prowess, hovers around 18 MPG combined for its various engine options, keeping it roughly in bracket. This comparison shows the LX’s fuel consumption: It’s not a leader in efficiency, but it’s not an outlier.

Buyers typically cross-shop these models and similar vehicles and are aware of the compromises. For a deeper dive, check out LX MPG across all years.

Tips to maximize efficiency

Avoid aggressive acceleration and hard braking. The LX 600 is a heavy vehicle, accelerating quickly requires a significant amount of fuel. Anticipate traffic flow and maintain a steady speed whenever possible. Smooth and gradual inputs will improve your mileage.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which forces the engine to work harder and reduces fuel efficiency. Check your tire pressure regularly and inflate them to the recommended level, typically found on a sticker inside the driver’s side doorjamb. Consider the tire compound. An all-terrain tire, while adding to the rugged appeal of the vehicle, will often harm overall fuel efficiency compared to a highway-terrain tire.

Reduce unnecessary weight. Carrying excessive cargo adds to the vehicle’s weight, which negatively impacts fuel economy. Remove any items you don’t need from the cargo area and passenger compartment.

Use cruise control on the highway. Cruise control helps maintain a consistent speed, preventing unintentional acceleration and deceleration. This can lead to improved fuel efficiency on long highway drives. You should also keep in mind that cruise control’s fuel-saving feature becomes lessened in hilly terrain, requiring more gas to maintain a specific speed constantly.

Consider using a fuel additive designed to clean fuel injectors and improve combustion. Over time, carbon deposits can build up in fuel injectors, reducing their efficiency. A fuel additive, used periodically, can help keep the fuel system clean.