20 MPG combined isn’t going to win any fuel economy awards, which is perfectly alright for the 2020 Genesis G90 RWD with the 3.3L turbocharged V6. This isn’t a car purchased for its frugality; it’s a statement of value and understated luxury. The G90 buyer prioritizes comfort, space, and a smooth ride, and they’re willing to accept middling fuel economy as part of the package. These buyers are often executives, entrepreneurs, or those seeking a premium experience without the overt flashiness (or price tag) of established German rivals. They want a comfortable, quiet, and reliable luxury sedan, and the G90 delivers exactly that.

City and highway performance

The EPA estimates suggest 17 MPG in the city and 25 MPG on the highway. The city figure reflects the realities of stop-and-go traffic, something the G90’s weight doesn’t help. The 3.3L turbo V6, while powerful, requires more fuel when repeatedly accelerating from a standstill. On the open road, the G90 fares a bit better. The eight-speed automatic transmission allows the engine to cruise at lower RPMs, contributing to the higher highway MPG figure. Consider that these are EPA estimates, and your mileage may vary considerably depending on driving style, terrain, and even tire pressure. Gentle acceleration and anticipation of traffic flow are key to achieving figures closer to the EPA’s claims.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2020 Genesis G90 RWD 3.3L to be $2,900. This figure is based on driving 15,000 miles per year and using national average fuel prices. It’s a valuable benchmark for comparing the G90’s running costs to those of its competitors. Remember that fuel prices fluctuate, so your actual annual cost could be higher or lower depending on where you live and the prevailing cost of gasoline. Also, aggressive driving will undoubtedly increase your fuel consumption, leading to a higher annual fuel bill. The EPA’s calculation provides a standardized way to assess fuel costs across different vehicles, but remember that it’s just an estimate.

Real-world expectations

EPA numbers provide a baseline, however real-world fuel economy can vary significantly. Many drivers report that achieving the EPA’s 25 MPG highway figure is possible with careful driving, but the 17 MPG city estimate can be challenging to reach, especially in congested urban environments. You can expect figures closer to 15-16 MPG in typical city driving. A realistic expectation for mixed city and highway driving is likely around 18-21 MPG. Driving style plays a large role; heavy acceleration and frequent braking will quickly reduce fuel economy. Regular maintenance, including properly inflated tires and timely oil changes, can help improve efficiency. Check out G90 MPG across all years.

How it compares

In the realm of full-size luxury sedans, the G90’s fuel economy is generally comparable to its competitors, though some offer slightly better numbers. For example, the BMW 740i, with its turbocharged inline-six, achieves around 22 MPG combined. The Mercedes-Benz S450 manages a similar 22 MPG combined with its inline-six turbo engine. Audi’s A8 posts similar figures. Lexus, with its hybrid powertrain in the LS500h, achieves around 28 MPG combined, a significant advantage, but at a higher price point. The G90 buyer may not be solely focused on maximizing fuel efficiency. They are likely prioritizing value, content, and a smooth, comfortable ride over squeezing out every last mile per gallon. They are deliberately stepping away from the German establishment, and accepting slightly lower fuel economy is part of that decision. You can review all Genesis fuel economy data on our site.

Tips to maximize efficiency

Adopt a smoother driving style. The G90’s twin-turbo V6 provides ample torque, so there’s no need to accelerate aggressively. Gentle acceleration from a stop and anticipating traffic flow will significantly improve your MPG.

Maintain proper tire pressure. Underinflated tires increase rolling resistance, which directly impacts fuel economy. Check your tire pressure regularly and inflate them to the manufacturer’s recommended specifications, found on the placard on the driver’s side doorjamb.

Minimize idling. Idling consumes fuel without covering any distance. If you’re stopped for more than a minute, turn off the engine. The G90 doesn’t have a start/stop system, so consciously shutting off the engine during prolonged stops can make a difference.

Use cruise control on the highway. Maintaining a consistent speed on the highway minimizes variations in engine load and fuel consumption. Cruise control helps maintain a steady pace, contributing to better fuel economy on long trips.

Keep up with scheduled maintenance. Regular oil changes, air filter replacements, and tune-ups ensure that your G90’s engine is running optimally. A well-maintained engine operates more efficiently, translating to improved fuel economy.