The 2024 Lexus RZ 450e AWD with 18-inch wheels gets 107 MPG combined, putting it firmly in electric vehicle territory thanks to its battery-electric powertrain. This is about embracing a different kind of driving experience: quiet operation and instant torque instead of a traditional engine’s noise. Lexus is targeting buyers who are already interested in EVs and want a luxurious, well-appointed, technologically advanced vehicle with the build quality and reliability associated with the brand.

City and highway performance

The EPA numbers show the RZ 450e’s strengths in different driving environments. The city MPG equivalent of 115 reflects the efficiency of electric motors in stop-and-go situations, where regenerative braking captures energy that would otherwise be lost. The highway MPG equivalent of 98 indicates a decrease in efficiency at higher speeds, as aerodynamic drag and the energy required to maintain momentum become significant. This difference is typical for EVs, but the RZ 450e’s numbers reflect a well-engineered system that balances city and highway performance effectively. Someone looking at RZ MPG across all years can clearly see the efficiency trend.

Annual fuel cost

The EPA estimates an annual fuel cost of $700 for the 2024 Lexus RZ 450e AWD. This is based on driving 15,000 miles per year and using the national average electricity price. Owners who primarily charge at home using off-peak electricity rates or have access to workplace charging could see significantly lower costs. Electricity prices vary considerably, so this number is a general guideline.

Real-world expectations

Real-world driving conditions will impact the RZ 450e’s efficiency despite the EPA’s standardized testing. Ambient temperature, driving style, terrain, and climate control use can all influence the vehicle’s range and equivalent MPG.

Aggressive acceleration, frequent air conditioning, and cold weather can all reduce efficiency. Smooth acceleration and preconditioning the cabin while plugged in can help maintain optimal performance. Owners who prioritize energy conservation in their driving habits will likely find their real-world efficiency closely matches or even exceeds the EPA estimates.

How it compares

The RZ 450e competes in the luxury electric SUV segment, where efficiency is important. The Volvo XC40 Recharge achieves a combined 106 MPGe, while the Cadillac LYRIQ RWD comes in around 102 MPGe. The Tesla Model Y Long Range boasts a higher 122 MPGe combined. These differences in efficiency translate to varying real-world ranges and charging costs, so the RZ 450e buyer is likely weighing these factors, including their personal charging options and driving patterns. They might look through all Lexus fuel economy data to reinforce their decision. Fuel economy isn’t the only factor; the Lexus buyer prioritizes the brand’s reputation for reliability and customer service. They may accept slightly lower MPGe ratings compared to Tesla, for example, for the peace of mind that comes with a Lexus.

Tips to maximize efficiency

Use regenerative braking modes effectively. The RZ 450e offers different levels of regenerative braking, allowing drivers to control deceleration when lifting off the accelerator. Experiment with these settings to find the most efficient mode for your driving style, maximizing energy recapture and reducing the need for friction brakes.

Precondition the cabin while plugged in. Heating or cooling the interior of the RZ 450e while it’s connected to a charger draws power from the grid rather than the battery. This conserves energy and maximizes range, especially during extreme weather. It’s a simple step that can make a noticeable difference in overall efficiency.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, requiring the electric motor to work harder and reducing efficiency. Regularly check tire pressure and inflate them to the recommended levels for optimal performance and range.

Plan your routes strategically. Choose routes with fewer hills and less stop-and-go traffic when possible. Smooth, consistent driving at moderate speeds is the most efficient way to operate the RZ 450e and extend its range. Using the navigation system’s energy prediction can also help optimize routes for efficiency.

Minimize accessory usage. Electrical accessories such as heated seats, exterior lighting, and the entertainment system consume energy. Use these sparingly to maximize efficiency, especially on shorter trips where every bit of range counts. Consider lowering the climate control fan speed instead of opening windows at moderate temperatures.