27 MPG combined won’t break any hybrid efficiency records, but it’s a respectable figure for the 2024 Lexus RX 500h, a performance-oriented hybrid SUV for buyers who want a refined driving experience and unique styling over maximum fuel savings. It’s a Lexus RX with a more potent powertrain, not a Prius on stilts. Buyers often accept slightly lower MPG for added responsiveness and the luxury feel that’s core to the RX driving experience.

City and highway performance

The EPA estimates of 27 MPG in the city and 28 MPG on the highway show consistent efficiency across various driving conditions. This near-identical rating indicates a well-tuned hybrid system that uses both the electric motor and the 2.4L turbocharged four-cylinder engine effectively across a range of speeds. The RX 500h will likely deliver similar fuel economy in stop-and-go traffic and on the open highway, for predictable ownership costs. The AV-S6 automatic transmission ensures the engine operates in its most efficient range.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2024 Lexus RX 500h AWD is $2,150. This is based on driving 15,000 miles per year and using the national average fuel price when calculated. Your actual fuel costs will vary with your driving habits, local fuel prices, and the balance of city versus highway driving. Drivers exceeding 15,000 miles per year or living in areas with higher fuel costs will naturally spend more on fuel annually.

Real-world expectations

While EPA estimates offer a standard, real-world fuel economy can differ. The RX 500h’s MPG is sensitive to aggressive driving. Frequent hard acceleration will drop fuel economy below the rated 27 MPG. However, smooth, careful driving, using the electric motor’s torque and regenerative braking, can help you get figures closer to, or even slightly better than, the EPA estimates. Watch the power meter and try to keep the car in electric-only mode as much as possible at lower speeds to maximize your MPG.

How it compares

The RX 500h is in a competitive market. The Acura MDX, with its standard gasoline engine, gets around 22 MPG combined. The Volvo XC60 Recharge plug-in hybrid has a higher combined MPG and electric driving range, but it has a higher price and needs regular charging for maximum efficiency. Other models, such as the Lincoln Nautilus, get around 25 MPG in their hybrid configuration. The RX 500h balances performance and efficiency, which appeals to buyers who aren’t ready for a plug-in hybrid but want something more exciting than a standard hybrid.

Tips to maximize efficiency

Use the vehicle’s drive modes to your advantage. “Eco” mode reduces throttle response, promoting smoother acceleration, which improves fuel economy. “Normal” mode balances performance and efficiency, while “Sport” prioritizes responsiveness. Avoid “Sport” unless you truly need the extra power as it will reduce your MPG significantly.

Use regenerative braking. Anticipate stops and lift off the accelerator early to let the regenerative braking system recapture energy and recharge the battery. This is effective in city driving, where frequent stops and starts provide opportunities to recapture energy.

Minimize accessory use. Air conditioning, on hot days, puts a load on the engine, lowering fuel economy. Use the climate control carefully and consider opening windows when appropriate. Also, avoid idling for long periods; if you’re stopped for more than a minute or two, turn the engine off.

Keep your tires properly inflated. Underinflated tires increase rolling resistance, which reduces fuel efficiency. Check your tire pressure regularly and inflate them to the recommended pressure on the sticker inside the driver’s side doorjamb. Consider low rolling resistance tires when replacing them to get every last bit of MPG.

Schedule regular maintenance, and keep the car properly tuned. A well-maintained engine runs more efficiently. Follow the manufacturer’s recommended maintenance schedule for oil changes, air filter replacements, and spark plug replacements. Routine maintenance keeps all components working properly, contributing to better fuel economy. Find all Lexus fuel economy data and RX MPG across all years on our website.