Lexus currently dominates the U.S. luxury automotive market by consistently delivering vehicles that balance refinement with efficiency. Among its lineup, the 2025 Lexus ES 300h stands out as the most fuel-efficient luxury car available, offering an impressive 44 MPG combined.
This hybrid model, alongside the 2026 Lexus NX 450h+ (a plug-in hybrid), represents the pinnacle of gas-saving luxury vehicles. While the automotive industry increasingly focuses on full electric vehicles, Lexus maintains a strong position in the hybrid space, providing consumers with a practical and cost-effective alternative.
Fuel Efficiency and Cost Savings
The 2025 Lexus ES 300h is powered by Toyota’s proven 2.5-liter inline-four hybrid powertrain and comes in five trim levels, starting at $44,835 for the base model and reaching $51,130 for the F Sport Handling version.
The EPA estimates a total range of 581 miles with an annual fuel cost of $1,050. This translates to $2,750 in fuel savings over the average new vehicle achieving 28 MPG combined, based on 15,000 miles driven annually at current fuel prices.
Hybrid vs. Plug-In Hybrid: A Cost Analysis
While the 2026 Lexus NX 450h+ offers an even higher MPGe rating (84 MPGe combined), its overall running costs can surprisingly exceed those of the ES 300h. The NX 450h+ provides 37 miles of electric range and 36 MPG when running solely on gasoline, with a total range of around 550 miles and an annual fuel/electricity cost of $1,150.
The assumption that electric or plug-in hybrid vehicles automatically equate to lower operating costs is often flawed. Electricity isn’t cheap, especially in high-demand areas like Southern California, where rates are significantly higher than the national average.
In California, with average electricity costs around 30 cents per kWh, the annual operating cost of a Lexus NX 450h+ running exclusively on electric power can be $1,006, while using gasoline would cost $1,013. The ES 300h, however, costs only $829 per year under the same conditions.
This demonstrates that a hybrid vehicle like the ES 300h can be more cost-effective than a plug-in hybrid in regions with high electricity prices.
The Lexus UX: The Value Option
For those seeking a luxury experience with maximum fuel efficiency at the lowest possible entry price, the 2025 Lexus UX 300h is the best alternative. Starting at $38,035, the UX offers 43 MPG combined, a 456-mile range, and an annual fuel cost of $1,050.
While the UX doesn’t deliver the same level of performance as more premium Lexus models, its hybrid powertrain provides exceptional efficiency. The UX sacrifices some performance character in exchange for impressive fuel economy, making it a compelling option for budget-conscious luxury buyers.
Ultimately, the 2025 Lexus ES 300h remains the most practical and economical choice for luxury car buyers prioritizing fuel efficiency, especially in regions with moderate electricity costs. The Lexus UX provides an even more affordable option, while the NX 450h+ may not offer the expected cost savings in high-electricity states like California.
