The 2021 Genesis G90 AWD with the 3.3L twin-turbo V6 gets 20 MPG combined. This number might raise eyebrows in a Corolla, but it’s practically an afterthought for the G90’s target demographic. These buyers prioritize limousine-like comfort, advanced technology, and understated luxury over outright efficiency. They’re executives, entrepreneurs, and individuals who value a quiet and cossetting experience, and for them, fuel costs are a secondary consideration to the G90’s refined driving dynamics and opulent appointments.

City and highway performance

The EPA estimates the 2021 Genesis G90 AWD 3.3T achieves 17 MPG in city driving and 24 MPG on the highway. The city figure reflects stop-and-go traffic, where the G90’s substantial weight and the inherent inefficiencies of internal combustion engines impact mileage. The highway figure, on the other hand, shows the engine’s ability to cruise relatively efficiently when maintaining a constant speed. The eight-speed automatic transmission helps optimize fuel economy by keeping the engine in its most efficient range. Remember that aggressive acceleration or frequent passing maneuvers will significantly decrease fuel efficiency, even on the open road.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,900 for the 2021 Genesis G90 AWD 3.3T. This figure is based on driving 15,000 miles per year and using national average fuel prices. Your actual fuel costs will vary depending on your driving habits, the type of driving you do, and the price of gasoline in your area. The EPA estimates provide a standardized benchmark for comparing the fuel costs of different vehicles, you can see how the G90 stacks up against other cars in its class. Looking at G90 MPG across all years can also provide additional perspective.

Real-world expectations

Real-world fuel economy often differs from EPA estimates. Variables like driving style, traffic conditions, and even tire pressure can affect your MPG. Owners who frequently engage the G90’s Sport mode or live in hilly areas may observe lower fuel economy. Those who prioritize smooth acceleration and consistent speeds on flat terrain may achieve figures closer to the EPA’s estimates. Keep in mind that the G90 is a heavy, all-wheel-drive sedan. Its mass alone impacts efficiency, regardless of how conservatively it’s driven.

How it compares

Compared to its competitors, the 2021 Genesis G90 AWD 3.3T’s fuel economy is generally in line with other flagship sedans offering similar levels of performance and luxury. The BMW 740i xDrive, for example, is rated at 20 MPG combined (2021 model) and the Mercedes-Benz S500 4MATIC achieves 24 MPG combined (2022 model). These numbers highlight that efficiency isn’t typically a priority in this segment. Buyers are more focused on features, brand cachet, and the overall driving experience. If significantly better MPG is a priority, then buyers should consider smaller, less opulent vehicles. You can also see all Genesis fuel economy data.

Tips to maximize efficiency

Smooth and steady acceleration is key. Avoid hard launches and aggressive throttle inputs. The G90’s twin-turbo V6 delivers ample power, but using it sparingly will significantly improve fuel economy. Anticipate traffic flow and maintain a consistent speed whenever possible.

Ensure your tires are properly inflated. Under-inflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure regularly and inflate your tires to the recommended pressure listed on the sticker inside the driver’s side door.

Minimize idling. Idling wastes fuel, especially in modern turbocharged engines. If you anticipate being stopped for more than a minute or two, turn off the engine. The G90 has a smooth start-stop system as standard to help.

Reduce unnecessary weight. Remove any unnecessary items from the trunk and the cabin. Every extra pound adds to the vehicle’s overall weight, requiring the engine to work harder and consume more fuel.