19 MPG combined won’t impress, but that’s not the focus of the 2022 Genesis G90 RWD 5.0L V8. This flagship sedan caters to buyers who prioritize space, luxury, and a smooth ride. Fuel efficiency is a known trade-off. The G90 buyer wants a comfortable, chauffeur-worthy experience and the strong feel of a naturally aspirated V8, not a Prius.

City and highway performance

The EPA estimates the G90 achieves 16 MPG in the city and 24 MPG on the highway. The city figure reflects the challenge of moving a large, powerful sedan through stop-and-go traffic. The 5.0L V8 requires fuel to move its weight. The highway number is better, showing the benefits of the eight-speed automatic transmission which settles into a more fuel-efficient cruising gear. Expect the highway figure to change based on driving style, aggressive acceleration will reduce those numbers.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2022 Genesis G90 RWD 5.0L V8 will be $3,050. This is based on driving 15,000 miles per year using national average fuel prices. The actual fuel costs depend on your driving habits, city versus highway driving, and gas prices. Premium fuel is recommended for optimal performance and longevity with the G90’s V8 engine, this will impact the final cost.

Real-world expectations

The EPA provides a baseline, but real-world MPG will vary. Owners who mainly drive in congested cities should expect numbers closer to the 16 MPG city estimate, possibly lower with frequent idling. Drivers who spend more time on the open road, that maintain consistent speeds, may achieve or slightly exceed the 24 MPG highway estimate. The temptation to use the V8’s power may negate those gains. The G90’s weight and displacement mean that aggressive driving will always penalize fuel economy. Checking G90 MPG across all years can provide a broader range of owner-reported data.

How it compares

The G90’s fuel economy is lower than some competitors, but the comparison needs context. The BMW 740i, with its turbocharged inline-six, achieves a combined 25 MPG. The Mercedes-Benz S500, using a turbocharged inline-six with mild hybrid assistance, reaches around 24 MPG combined. The Lexus LS 500, with its twin-turbo V6, manages approximately 21 MPG combined. The G90 trails these competitors in efficiency, but it offers a different character with its naturally aspirated V8. Buyers often choose the G90 for its value, distinctive styling, and comfortable ride, accepting the fuel economy trade-off. You can review all Genesis fuel economy data to consider other, more efficient models within the brand.

Tips to maximize efficiency

The G90’s eight-speed automatic transmission is designed to optimize fuel economy. Use ‘Comfort’ mode for everyday driving, it prioritizes smoother shifts and earlier upshifts compared to ‘Sport’ mode. Frequent use of ‘Sport’ mode keeps the engine revving higher, decreasing fuel economy significantly.

Gentle acceleration and smooth braking are critical. The large displacement V8 responds well to a light foot. Avoid abrupt starts and stops, as they waste fuel. Anticipate traffic flow and maintain a consistent speed whenever possible. This is a large, heavy car so requires more finesse to drive efficiently.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which negatively impacts fuel economy. Check your tire pressure regularly and maintain the recommended pressure listed on the door jamb sticker.

Minimize unnecessary weight in the vehicle. Extra cargo adds to the vehicle’s overall mass, requiring more energy to move. Remove any items you don’t need, especially heavy objects. Every pound counts when trying to maximize fuel efficiency in a large sedan.

Regular maintenance, including oil changes and air filter replacements, helps the engine run efficiently. A well-maintained engine consumes less fuel. Consult your owner’s manual for the recommended maintenance schedule and adhere to it.