25 MPG combined for the 2.4L turbocharged four-cylinder in the 2026 Lexus RX 350 places this luxury crossover in a good spot for buyers who want comfort and reliability without too many trips to the pump. This isn’t a vehicle focused solely on hybrid-level efficiency; it’s a meticulously engineered, premium offering designed to deliver a smooth, quiet, and sufficiently powerful driving experience for daily commutes, family errands, and comfortable highway journeys, all while returning respectable fuel economy for its class. The RX 350 appeals to buyers, often established professionals, empty nesters, or small families, who value Lexus’s impeccable build quality, quiet cabins, and legendary dependability more than outright sports car performance or absolute mileage supremacy. They accept this 25 MPG as a sensible balance, understanding that the Lexus ownership experience extends far beyond the fuel gauge.

City and Highway Performance

Breaking down the 25 MPG combined figure, the 2026 RX 350 achieves 22 MPG in the city and 29 MPG on the highway. That 22 MPG city figure is notable. While many turbocharged engines can struggle with stop-and-go efficiency, the RX 350’s powertrain, paired with its smooth-shifting automatic (S8) transmission, manages to maintain a decent average. The immediate torque delivery from the 2.4L turbo allows for confident acceleration in urban environments without excessive throttle inputs, which would naturally consume more fuel. Out on the open road, where the powertrain can settle into its stride, 29 MPG is a commendable return for a mid-size luxury SUV. The RX’s aerodynamically optimized body and refined cruising characteristics are major contributors here. For the typical RX buyer, who might split their driving between suburban commutes and occasional longer road trips, these numbers translate directly into fewer refueling stops and a more relaxed experience overall.

Annual Fuel Cost

The EPA estimates an annual fuel cost of $2,300 for the 2026 Lexus RX 350 2.4L. This figure is calculated based on an average of 15,000 miles driven per year and national average fuel prices. It serves as a useful benchmark for buyers to understand the running costs associated with the vehicle. Individual fuel costs will vary depending on local gas prices, driving habits, and maintenance schedules. However, this $2,300 annual figure provides a consistent point of comparison, reinforcing that while the RX isn’t the most fuel-efficient vehicle on the market, its operating costs are entirely reasonable for a luxury SUV of its caliber. For many RX owners, this cost is a small percentage of their overall vehicle expenditure, fitting into their budget expectations for a premium ownership experience.

Real-world expectations

In real-world driving, owners of the 2026 RX 350 can realistically expect to achieve numbers very close to the EPA estimates. Lexus powertrains are renowned for their consistent performance, and the 2.4L turbo is no exception. Aggressive driving, frequent short trips in extreme temperatures, or heavy payloads will naturally dip below the 25 MPG combined. Conversely, a disciplined driver on longer, flatter highway stretches might even exceed the 29 MPG highway rating. The RX 350’s character inherently encourages a smoother, more measured driving style, which often translates to better fuel economy in practice. The refined ride and quiet cabin promote a more relaxed approach that incidentally benefits the fuel gauge. Owners who buy this vehicle are not looking to push its performance limits; they seek comfort, reliability, and graceful motoring, all of which align well with maintaining optimal efficiency.

How It Compares

The 2026 Lexus RX 350 2.4L’s 25 MPG combined figure places it squarely in a competitive segment, often outperforming or matching key rivals. For instance, consider the Acura MDX, which with its V6 engine typically sees around 22 MPG Combined. The RX 350 has an advantage here due to its smaller displacement turbocharged engine, especially for buyers cross-shopping these two family-focused luxury crossovers. Against the Genesis GV70 2.5T, which typically achieves 22 MPG Combined, the RX maintains a noticeable edge, providing a more efficient option in the compact to mid-size luxury SUV space. Even comparing it to a Mercedes-Benz GLC 300 4MATIC, which can hit 26 MPG Combined, the RX 350 holds its own, especially when considering the significant difference in size and interior volume favoring the Lexus. The BMW X3 xDrive30i, another close competitor on size and price, also typically returns 25 MPG Combined, showing Lexus is right in line with the segment’s best. Buyers considering the RX are often weighing these factors, the comfort and space of the Lexus against the raw efficiency figures in a highly competitive market. For more on how Lexus models perform, explore all Lexus fuel economy data. You can also review RX MPG across all years to see its evolution.

Tips to Maximize Efficiency

Maintaining consistent tire pressure is fundamental. The RX 350’s 2.4L engine is designed for efficiency, and under-inflated tires increase rolling resistance, forcing the engine to work harder than necessary and directly impacting your 25 MPG combined average.

Use the RX’s drive modes intelligently. While the vehicle defaults to a balanced mode, selecting the Eco mode can subtly adjust throttle response and transmission shift points to prioritize fuel savings, especially beneficial in stop-and-go city traffic.

Smooth acceleration and deceleration are critical. The turbocharged engine delivers power quickly, but gentle inputs prevent unnecessary fuel consumption, allowing the automatic transmission to shift efficiently without wasting energy.

Regular maintenance, including oil changes and air filter replacements, ensures the 2.4L engine operates at its peak efficiency. A well-maintained engine burns fuel more completely and effectively, directly contributing to your overall fuel economy.

Minimize unnecessary weight in the vehicle. While the RX 350 is built to carry passengers and cargo, constantly hauling heavy items or roof racks when not needed will incrementally reduce your fuel efficiency over time, making you stop for fuel more frequently.