The 2023 Genesis G80 RWD with the 2.5L turbocharged four-cylinder engine gets 26 MPG combined. It’s not trying to be a Prius, or achieve that level of fuel efficiency. Even in this more economical configuration, the G80 delivers effortless transportation, and the fuel economy reflects that. Buyers choosing this G80 are seeking a luxurious and stylish sedan with respectable, if not class-leading, fuel efficiency.

City and highway performance

The EPA estimates the G80 2.5T at 22 MPG in the city and 32 MPG on the highway. The 22 MPG in stop-and-go traffic acknowledges the G80’s weight and the demands of moving a luxury sedan from a standstill. The 32 MPG highway figure shows the engine’s ability to cruise efficiently once up to speed. The eight-speed automatic transmission helps by keeping the engine in its efficient range during highway driving. The G80 is most at home on the open road, easily covering miles with a reasonable use of fuel.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2023 Genesis G80 RWD 2.5L at $2,250. This is based on driving 15,000 miles per year and using national average fuel prices. Your actual fuel expenses will vary depending on your driving, local fuel costs, and the grade of gasoline you use. $2,250 provides a standard for comparing the G80’s running costs with other vehicles and helps buyers consider fuel costs.

Real-world expectations

Real-world MPG will vary, even though the EPA estimates provide a baseline. Aggressive driving, frequent short trips, and extended idling will negatively impact fuel economy. However, drivers with a light foot and smooth acceleration should meet or slightly exceed the EPA’s highway figure.

The G80’s turbocharged engine is responsive and encourages spirited driving, which reduces fuel economy. If you drive conservatively, expect between 24 and 30 MPG in mixed driving. G80 MPG across all years can vary depending on engine and drivetrain.

How it compares

The G80 2.5T doesn’t compete with hybrid leaders, but it holds its own against other conventionally powered luxury sedans. The BMW 530i gets a combined 27 MPG. The Mercedes-Benz E350 also gets a combined 26 MPG. The Acura TLX SH-AWD with the 2.0T engine is rated at 24 MPG combined. These differences might seem small, but they translate into savings or extra costs. For buyers cross-shopping these models, fuel economy is one factor to consider, and these numbers are a useful reference.

Tips to maximize efficiency

Use the G80’s Eco drive mode. This mode remaps the throttle and transmission to prioritize fuel efficiency. It may feel less responsive than Comfort or Sport mode, but it can improve MPG, especially in city driving.

Keep your tires properly inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder. Check your tire pressure and inflate them to the specified pressure on the door jamb sticker.

Avoid idling. Idling wastes fuel. If you’re stopped for more than a minute, turn off the engine. The G80’s engine restarts quickly and smoothly.

Drive with smooth acceleration and braking. Jackrabbit starts and hard braking waste fuel. Accelerate gradually and anticipate stops to avoid sudden braking. Coast whenever possible.

Follow the maintenance schedule. A well-maintained engine runs more efficiently. Follow Genesis’ recommended maintenance schedule for oil changes, air filter replacements, and other services. Stay abreast of all Genesis fuel economy data and factor running costs into car ownership.