The 2019 Genesis G90 RWD with the 3.3L V6 gets 20 MPG combined. This isn’t the most fuel-efficient car, but that number shows that it prioritizes a smooth, quiet, and powerful driving experience over saving gas. The G90 is for buyers who value luxury and comfort, and for them, the gas usage is a known cost.

City and highway performance

The EPA estimates the G90 gets 17 MPG in the city and 24 MPG on the highway. The city number shows what happens when you drive a large, luxurious sedan in stop-and-go traffic. The 3.3L turbocharged V6 needs fuel to get the heavy G90 moving. However, the 24 MPG highway number shows that the engine can cruise efficiently once it reaches speed. The 8-speed automatic transmission helps by selecting the best gear for relaxed highway driving and using less fuel at steady speeds. Remember, this is a rear-wheel-drive vehicle, so winter weather can affect fuel economy.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2019 Genesis G90 RWD 3.3L to be $2,900. This number is based on driving 15,000 miles per year, with 55% in the city and 45% on the highway. The calculation also uses the national average fuel price at the time. This number shows prospective buyers the cost of owning the car. Luxury car buyers may care less about fuel costs, but a nearly $3,000 annual cost is worth thinking about, especially when comparing it to other cars. You can find G90 MPG across all years if you are considering different used models.

Real-world expectations

EPA estimates are a standard, but real-world fuel economy can change based on driving, roads, and even tire pressure. Quick acceleration and hard braking will lower fuel efficiency, especially in a large car. Larger wheels can also make it worse. Owners in hilly areas or heavy traffic should expect numbers closer to the lower end of the EPA range. But drivers who accelerate smoothly and drive at consistent speeds on the highway may see better results than the EPA estimates. The quality of fuel also matters, premium fuel, as Genesis recommends maximizes engine performance and efficiency.

How it compares

The 2019 Genesis G90’s fuel economy is similar to others in its class. For example, a 2019 Mercedes-Benz S450 gets about 19 MPG combined, showing that luxury and efficiency aren’t always together. A BMW 740i from the same year also gets around 21 MPG combined. The Lexus LS 500, known for being reliable, gets around 22 MPG combined, a bit better than the G90. These small differences can matter, especially for drivers who drive a lot each year, but many G90 buyers may find that the better value and long warranty are more important than slightly better fuel economy. For context, check all Genesis fuel economy data.

Tips to maximize efficiency

Tire pressure is important for fuel efficiency in any car, especially a large sedan like the G90. Check your tires often and inflate them to the pressure on the driver’s side door. Low tires create more rolling resistance, making the engine work harder and burn more fuel.

Watch traffic and avoid fast acceleration and braking. The G90’s smooth engine can be quick, but each burst of speed uses extra fuel. Driving at a steady speed and leaving space between you and the car ahead helps use less fuel.

Remove extra weight from the car. The G90 is built for luxury, but extra items in the trunk or cabin add weight reducing fuel efficiency. Clear out items you don’t need every day to lighten the load and improve MPG.

Use cruise control on long highway drives. Cruise control helps keep a consistent speed, preventing quick acceleration and slowing down which wastes fuel. Using cruise control on flat highways can improve fuel economy.