For drivers weighing a 2023 Nissan Altima purchase, understanding the real-world gas mileage is essential for managing long-term ownership costs. This mid-size sedan competes in a crowded segment where efficiency directly impacts the bottom line at the pump. The official EPA estimates provide a baseline, but the true numbers emerge from how the turbocharged engine pairs with the continuously variable transmission in daily driving.
Under the hood, the base model Altima utilizes a 2.5-liter four-cylinder engine producing 188 horsepower, while the higher trims feature a 1.5-liter turbocharged unit delivering 188 horsepower as well. This shared output highlights Nissan’s focus on providing a smooth, responsive drive without excessive fuel consumption. The continuously variable transmission (CVT) is the standard gearbox, designed to keep the engine revving in the optimal efficiency range during steady highway cruising.
Official EPA Fuel Economy Ratings
The Environmental Protection Agency provides standardized metrics that allow for easy comparison across the automotive market. For the 2023 model year, the front-wheel-drive configuration with the base engine achieves an EPA-estimated 28 city / 39 highway / 32 combined MPG. These figures represent a balanced performance that caters to both urban stop-and-go and open-road stability.
When opting for the available all-wheel-drive system, which adds capability in adverse weather, the mileage sees a slight adjustment. The EPA rating for the AWD variant sits at 27 city / 37 highway / 31 combined MPG. While the difference is modest, it underscores the trade-off between traction and aerodynamic efficiency that all drivers must consider.
Real-World Driving Scenarios
Laboratory tests offer precision, but the road delivers the truth regarding the 2023 Nissan Altima gas mileage. In mixed driving that combines short trips, highway stretches, and varying traffic conditions, owners often report averages in the low 30s MPG. This practical outcome aligns closely with the combined rating, demonstrating the vehicle's reliability in everyday use.
Aggressive acceleration and high-speed driving will naturally push the Altima toward the lower end of the city MPG spectrum. Conversely, maintaining a steady pace on the interstate allows the turbocharged engine to operate efficiently, frequently achieving figures in the high 30s or even touching 40 MPG on longer journeys. Driving style remains the single largest variable affecting the final number on the fuel gauge.
Comparison with Class Competitors
Placing the Altima within its segment reveals how its efficiency stacks up against rivals from Toyota, Honda, and Hyundai. The Toyota Camry and Honda Accord, both strong sales contenders, offer comparable ratings, with the Accord often edging slightly ahead in highway MPG. The Hyundai Sonata presents a compelling alternative with its available hybrid powertrain, pushing efficiency figures significantly higher for budget-conscious consumers.
