The most fuel-efficient Lexus vehicles by powertrain type in 2026 are the RX, UX Hybrid, and RX Plug-In Hybrid. These models earn respective EPA estimates of 28, 43, and 85 MPG/MPGe (Combined) with their gas, mild-hybrid, and PHEV configurations. Honorable mention goes to the ES model, which was the most efficient hybrid for 2025 and likely to reclaim that status when it releases. Other Lexus family members like the NX Plug-In Hybrid follow closely behind in their categories.
You might be wondering why these luxury cars made our list when all-electric models like the ES and RZ are so efficient without petrol. Today, we're setting aside Lexus EVs for our readers who aren't ready to fully embrace electrified driving and deep-diving into the Lexus vehicles with the best gas mileage. Once you've identified your favorite gas-only, hybrid, or PHEV model from the outline below, visit DARCARS Lexus of Greenwich to make your Lexus fuel economy dreams a reality.
Let's start our discussion with the most fuel-efficient Lexus models that use only gasoline: the Lexus RX, NX, and TX. These daily drivers are able to offer consistently wallet-friendly MPGs without sacrificing speed and power because of smart engine design. The Lexus NX, for example, houses an advanced four-cylinder engine with a turbocharger, a setup that produces higher power from a smaller displacement. How? By turning what would otherwise be wasted exhaust into energy, the lighter engine can produce the same power with less fuel.
Lexus hybrid cars take a slightly different approach to fuel efficiency: Thanks to their clever hybrid systems, these vehicles switch seamlessly – and automatically – between the use of their electric motors and gas engines. Lexus hybrid cars can also intuit when combining electric and gas power would maximize fuel efficiency. This synergistic system works via regenerative braking, capturing kinetic energy and turning it into electrical charge for your hybrid battery.
Lexus plug-in hybrid vehicles offer the best of both worlds. They blend gasoline and electricity in what's called a power-split setup, and the best part is, you don't have to decide when to toggle between the two. PHEVs can use electric-only power at low speeds, helping you save fuel when the engine isn't needed. As you pick up the pace, the system automatically switches to hybrid output.
| Most Efficient 2026 Gas Models | |||
|---|---|---|---|
| TX | NX | RX | |
| EPA-Est. MPG (Comb) | 23 MPG | 24 MPG | 25 MPG |
| Most Efficient 2026 Hybrid Models | |||
| NX Hybrid | UX Hybrid | ES Hybrid (2025) | |
| EPA-Est. MPG (Comb) | 40 MPG | 43 MPG | 44 MPG |
| Most Efficient 2026 Plug-In Hybrid Models | |||
| TX Plug-In Hybrid | NX Plug-In Hybrid | RX Plug-In Hybrid | |
| EPA-Est. MPG (Comb) | 76 MPGe | 84 MPGe | 85 MPGe |
Unless you're drag-racing your Lexus ES sedan or trying to beat everyone off the line in your RX SUV, your Lexus gas mileage should be at or close to the EPA's tested ratings. That said, you can take additional steps to make sure you get the most out of your fuel spend, whether that's in gas or electric form.
Any maintenance and upkeep, like changing out your air filters or balancing your tire pressure, can be handled by our dealership's service department. Book your appointment online or by phone to make sure your Lexus MPG stays as high as possible!
Now comes the fun part of this Lexus review: Shopping for your favorite model! At our Greenwich dealership, you can get up close and personal with these gas, hybrid, and PHEV variants to see which one deserves a coveted spot in your driveway.
The gas-only Lexus vehicles with the best gas mileage include the new Lexus NX, RX, and TX. The NX and RX are extremely popular two-row SUVs that prioritize passenger comfort, while the TX seats up to seven and is an ideal family car. No matter which of these high-MPG sport-utes you choose, expect standard and available features like these:
The most fuel-sipping Lexus hybrid cars are the 2026 NX Hybrid and UX Hybrid, though we expect the ES Hybrid to join, even top, the ranks when it's released. Stop by our store in Greenwich, CT, to explore the NX Hybrid and its 22.7-cubic-foot trunk or any of the Lexus UX Hybrid trims and their generous 42 inches of front legroom. Standard Amenities within the UX Hybrid family include:
Our top picks for the most fuel-efficient Lexus PHEVs are the TX PHEV, NX PHEV, and RX PHEV. This trio of SUVs can slash your fuel budget without compromising your comfort. While each brings its own set of benefits to the road (like the 14-inch center screen of the RX Plug-In Hybrid), you'll enjoy the following perks inside all their cabins:
At our Greenwich, CT, dealership, we proudly carry today's most popular luxury cars, including the most fuel-efficient Lexus options. Already know which one you'll take home? Stop by our showroom for an in-person tour of a two-row Lexus UX Hybrid, a three-row TX Plug-In Hybrid, a two-row RX Hybrid, or any other model that strikes your fancy, then discuss our lease and finance options to see just how affordable these automobiles can be, both at our store and at the fuel pump.
The most fuel-efficient Lexus vehicles by powertrain are:
The 2026 Lexus NX Hybrid earns an EPA-estimated 40 MPG (Combined). Other hybrid models get even higher gas mileage, like the UX Hybrid and its EPA-estimated 43 MPG (Combined).
Excluding fully electric models, the most fuel-efficient Lexus SUV is the 2026 RX Plug-In Hybrid. This two-row gem is rated at an EPA-estimated 85 MPGe (Combined) thanks to its dual gas and electric powertrain.
2/24/2026
Visited Lexus of Greenwich today and had a wonderful experience. My salesman, Anthony Delvecchio, went above and beyond to get us into the perfect vehicle. He was professional and courteous. I highly recommend this dealership and Anthony in particular.