19 MPG combined isn’t going to win any awards, but it’s the reality for those seeking the insulated, opulent experience the 2017 Genesis G90 RWD with the 5.0L V8 provides. This isn’t a car bought by someone pinching pennies at the pump; it’s a deliberate choice, accepting the fuel consumption in exchange for a specific blend of spaciousness, luxury, and powerful, effortless cruising that few other vehicles can match at this price point. Buyers choose this particular G90 for its distinct personality: an understated presence, immense cabin space, and a smooth, naturally aspirated V8 engine that delivers power without the drama of forced induction.

City and highway performance

The EPA estimates offer a glimpse into how this big sedan performs in different environments. The city rating of 16 MPG reflects the G90’s weight and engine size, which take their toll in stop-and-go traffic. Expect more frequent trips to the gas station if your commute is primarily urban. On the open road, the 24 MPG highway rating is more palatable, demonstrating the engine’s ability to cruise efficiently at higher speeds. This discrepancy shows that the G90 is best suited for long highway journeys where its smooth ride and ample power can truly shine.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2017 Genesis G90 RWD 5.0L is $3,050. This figure is based on driving 15,000 miles per year, with 45% of those miles driven in the city and 55% on the highway. It’s calculated using the national average fuel prices at the time of the EPA’s testing. While individual fuel costs will vary based on location, driving habits, and fluctuations in gasoline prices, this provides a standardized benchmark for comparing the G90 to other vehicles. This number represents a significant operating expense, and potential buyers should consider it, especially when compared to other models in its competitive set.

Real-world expectations

While the EPA provides a standardized measurement, the real-world fuel economy of the G90 can vary based on driving style, traffic conditions, and even weather. Aggressive acceleration, frequent braking, and sustained high speeds will all decrease fuel efficiency. Conversely, gentle acceleration and consistent speeds can help you achieve figures closer to the EPA estimates. Tire pressure and the level of routine maintenance also play roles. Ultimately, your individual MPG will depend on how and where you drive.

How it compares

Compared to its rivals, the G90 sits in a specific slot. A BMW 750i xDrive, for example, boasts a combined 19 MPG, but with a higher price tag. The Mercedes-Benz S560 achieves a similar 19 MPG combined, again at a higher price point. An Audi A8 can reach 22 MPG combined, but the 5.0L G90 delivers a different character. A Lexus LS 500 sits around 23 MPG combined. These figures demonstrate that the G90 buyer isn’t necessarily seeking the absolute best fuel economy in the segment; they are making a trade-off for a specific mix of luxury, power, and space at a certain price point. For drivers wanting to compare other models, you can review all Genesis fuel economy data to further explore other options from the brand.

Tips to maximize efficiency

One simple change that can help you conserve more fuel is by making sure that your tires are properly inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure regularly and inflate them to the recommended levels specified in your owner’s manual.

Anticipate traffic flow to avoid unnecessary acceleration and braking. Maintaining a smooth, consistent speed minimizes fuel consumption. Look ahead, anticipate traffic lights, and avoid abrupt maneuvers wherever possible. This is particularly useful in city driving, as reflected in the 16 MPG city rating.

Avoid extended idling, especially in cold weather. Modern engines warm up quickly, so there’s no need to let the engine idle for more than a minute or two. Turn off the engine if you anticipate a longer wait. Long idling sessions burn fuel without any forward progress.

Consider using cruise control on the highway to maintain a constant speed. Cruise control can help you avoid unintentional speed fluctuations, which contribute to fuel waste. However, be mindful of traffic conditions and disengage cruise control when necessary for safety. Drivers can review G90 MPG across all years to get more context on fuel-saving strategies.

Ensure your G90 receives regular maintenance, including oil changes, air filter replacements, and spark plug replacements. A well-maintained engine operates more efficiently, maximizing fuel economy and extending the life of the vehicle.