The 2023 Genesis G90 AWD gets 21 MPG combined, a figure that isn’t the main selling point for a plush, technology-laden sedan designed for chauffeured comfort and effortless long-distance cruising. This isn’t a car primarily chosen for its frugality, but the G90’s fuel efficiency still deserves attention.

City and highway performance

The EPA rates the G90 at 18 MPG in the city and 26 MPG on the highway. The city rating reflects the car’s weight and the demands on its 3.5-liter twin-turbo V6 engine during stop-and-go traffic. The engine, while smooth and powerful, requires a fair amount of fuel to move such a large car. Highway fuel economy is better, benefitting from the eight-speed automatic transmission’s ability to settle into a relaxed cruising gear. The G90 is best for highway miles, where the efficiency gets closer to the advertised 26 MPG and the car’s refined nature truly shines.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2023 Genesis G90 AWD at $2,750. This calculation is based on driving 15,000 miles per year, with fuel prices reflecting the national average. Actual fuel costs will vary depending on individual driving habits, local fuel prices, and the type of fuel used. Premium fuel is recommended for optimal performance, which increases running costs.

Real-world expectations

The EPA provides a standardized benchmark, but real-world MPG often differs, depending on driving style, road conditions, and even tire pressure. Aggressive acceleration and frequent hard braking will reduce fuel economy. Owners who drive to save fuel will see numbers closer to the EPA estimates, perhaps even exceeding the highway figure on longer trips. The G90 has comfortable and confidence-inspiring power, so resisting the urge to really put your foot down can be hard.

How it compares

The G90’s fuel economy isn’t terrible for a flagship luxury sedan, but it’s not a leader either. The Mercedes-Benz S500 4MATIC, with a turbocharged inline-six, gets a slightly better 22 MPG combined. The BMW 740i, another inline-six competitor, manages 25 MPG combined. The Lexus LS 500 AWD gets 21 MPG combined, matching the G90. For some buyers these differences matter. If fuel economy is a top priority, a hybrid or plug-in hybrid powertrain, not offered on the G90, would be a more efficient choice. You can see all Genesis fuel economy data to compare to other models within the brand.

Tips to maximize efficiency

Gentle acceleration and anticipating traffic can affect fuel consumption. The G90’s smooth power delivery allows for brisk acceleration, but a lighter foot on the gas pedal will improve fuel economy, especially in city driving.

Maintaining proper tire inflation is important for fuel efficiency and handling. Check tire pressures regularly and use the recommended specifications on the door jamb sticker.

Avoid unnecessary idling. If you’re stopped for more than a minute, shutting off the engine can save fuel. The G90’s engine is designed for easy starting, so you will not add wear by doing this.

Use cruise control on the highway. Maintaining a consistent speed is more efficient than constantly changing the throttle, leading to better fuel economy on long journeys. Cruise control works best on flat roads because uphill grades will require more power.

Reduce unnecessary weight. Removing excess cargo from the trunk can slightly improve fuel economy, especially during city driving. Emptying that golf bag you haven’t used is a good start. For more information, explore G90 MPG across all years.