20 MPG combined isn’t going to win any fuel efficiency awards, but it’s the price of entry for the 2019 Genesis G90 AWD 3.3L 6-cyl. This isn’t a car bought by penny-pinchers, it’s a statement of arrival, a rolling sanctuary for executives and those who prioritize a smooth, luxurious ride above all else. The G90 buyer appreciates value, but they’re not cross-shopping economy cars. They’re seeking a distinguished experience that rivals established luxury brands, and they understand that refined performance comes with a cost at the pump.

City and highway performance

The EPA estimates suggest you’ll see around 17 MPG in the city. Stop-and-go traffic will take its toll, as it does on any car this size. The twin-turbocharged V6 needs fuel to launch its considerable mass.

On the open road, the G90’s 8-speed automatic transmission helps it stretch a gallon to 24 MPG. This highway figure is reasonable for a large, all-wheel-drive sedan, making long-distance cruising a comfortable and relatively efficient affair. The key is to maintain a steady speed and let the engine loaf in the higher gears. Aggressive acceleration will quickly erase any gains.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2019 Genesis G90 AWD 3.3L 6-cyl at $2,900. This figure is based on driving 15,000 miles per year and using the EPA’s projected fuel prices. Keep in mind that real-world fuel costs can vary significantly depending on your driving habits, local fuel prices, and the type of driving you do. If you primarily drive in the city, or have a heavy foot, expect to spend more. Consider this figure a benchmark for comparison, not a guarantee of your actual expenses.

Real-world expectations

While the EPA provides a standardized testing methodology, your actual mileage will inevitably fluctuate. A lead foot, frequent short trips, and extended idling will all drag down your MPG. Conversely, a gentle driving style and primarily highway miles can potentially nudge your fuel economy closer to, or even slightly above, the EPA estimates.

Pay attention to the G90’s driving mode selector. Eco mode may help squeeze out a few extra miles, but be prepared for a less responsive throttle. Observe the driving habits needed to properly manage all Genesis fuel economy data.

How it compares

The G90’s fuel economy sits roughly in line with its competitors, bearing in mind that comparing luxury sedans is more about splitting hairs than finding dramatic differences. The Mercedes-Benz S450 4MATIC, with its inline-six engine, achieves an EPA-estimated 19 MPG combined. The BMW 740i xDrive, also powered by an inline-six, manages a marginally better 22 MPG combined. The Lexus LS 500 AWD lands around 21 MPG combined. These differences barely register in the grand scheme of owning a flagship sedan, but are worth noting for the detail-oriented buyer. To see a full breakdown of the G90 MPG across all years, use the information on this site. The Genesis offers exceptional value relative to its competition, often costing less upfront, thus offsetting some of those fuel costs.

Tips to maximize efficiency

Avoid aggressive acceleration. The twin-turbo V6 delivers plenty of power, but each burst of speed comes at the expense of fuel economy. Drive smoothly and anticipate traffic to minimize the need for hard braking and subsequent acceleration.

Ensure your tires are properly inflated. Underinflated tires create more rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure regularly and inflate them to the recommended level found on the door jamb.

Minimize idling time. Idling burns fuel without covering any distance. If you’re stopped for more than a minute or two, turn off the engine. The G90’s comfortable cabin makes it tempting to sit and idle, but resisting that urge will improve your MPG.

Use cruise control on the highway. Maintaining a constant speed minimizes unnecessary acceleration and deceleration, resulting in better fuel efficiency on long trips. Set the cruise control and let the G90’s advanced systems manage the throttle.