26 MPG combined is a reasonable compromise for the 2021 Genesis G80 RWD 2.5L 4-cyl, a car that prioritizes luxury and road presence over maximizing fuel efficiency. This isn’t a hybrid or a compact commuter; it’s a mid-size luxury sedan designed to surround its occupants with comfort and make a statement. The target buyer appreciates a satisfying driving experience and a premium feel and is willing to accept average fuel economy in exchange for those qualities. They prioritize style, comfort, and advanced technology over squeezing every last mile from each gallon.

City and highway performance

The EPA estimates the 2021 G80 2.5T RWD at 23 MPG in the city and 32 MPG on the highway. The difference between city and highway figures reflects the impact of stop-and-go traffic and lower average speeds encountered in urban environments. The 32 MPG highway rating is achievable on long road trips when maintaining consistent speeds, while the 23 MPG city rating is a realistic expectation for daily commutes involving traffic lights and congestion. The 8-speed automatic transmission is generally smooth and makes good use of the engine’s power, helping to keep the engine in its optimal rev range.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Genesis G80 2.5T RWD at $2,250. This figure is based on driving 15,000 miles per year and using national average fuel prices, which fluctuate constantly. Individual fuel costs can vary depending on driving habits, local fuel prices, and the type of fuel used. While this is an estimate, it gives potential buyers a benchmark for budgeting their transportation expenses. This figure assumes the use of regular unleaded gasoline, which is typical for modern turbocharged engines like the one in the G80.

Real-world expectations

While the EPA estimates provide a standardized comparison, real-world fuel economy can differ significantly based on individual driving habits and conditions. Aggressive acceleration, frequent hard braking, excessive idling, and carrying heavy loads will all decrease fuel economy. Geographic location and the terrain also play a role; driving in hilly areas generally results in lower MPG compared to flat terrain. Maintaining proper tire inflation, performing regular maintenance, and adopting smoother driving techniques can help achieve fuel economy closer to the EPA estimates.

How it compares

In the mid-size luxury sedan segment, the G80’s fuel economy is middle-of-the-road. The BMW 530i, with its 2.0-liter turbo-four, achieves an EPA-rated 28 MPG combined, making it slightly more efficient than the G80 2.5T. The Mercedes-Benz E350, also featuring a 2.0-liter turbo engine, offers similar fuel economy to the BMW, around 29 MPG combined. The Audi A6 with its base 2.0T engine is rated at 28 MPG combined as well. These slight differences are important to buyers who are cross-shopping between these models. For drivers who prioritize fuel efficiency above all else, alternatives like the Lexus ES 300h hybrid, which boasts an impressive 44 MPG combined, could be a more appealing choice, though it lacks the G80’s powerful engine and rear-wheel-drive dynamics. See G80 MPG across all years for more information.

Tips to maximize efficiency

One of the simplest ways to improve fuel economy in the G80 is to adopt a smoother driving style. Avoid aggressive acceleration and braking, and maintain a steady speed whenever possible. The G80’s turbo engine responds well to gentle throttle inputs, allowing you to maintain momentum without unnecessarily burning fuel.

Regularly check and maintain proper tire inflation. Underinflated tires create more rolling resistance, which reduces fuel efficiency. Consult the sticker on the driver’s side doorjamb for the recommended tire pressure. A small investment in a tire pressure gauge can pay dividends in fuel savings.

Reduce unnecessary weight. Remove any items from the trunk or backseat that aren’t needed. Extra weight puts a strain on the engine, reducing fuel economy. A lighter vehicle is always a more efficient vehicle, especially during city driving.

Take advantage of the G80’s drive mode settings. The “Eco” mode optimizes the engine and transmission settings for maximum fuel efficiency. While it might slightly reduce responsiveness, it can noticeably improve MPG during daily commutes. Owners should use all Genesis fuel economy data to understand the full range of possibilities.

Plan routes carefully. Avoid peak traffic times if possible. Stop-and-go traffic drastically reduces fuel economy. Using navigation apps to find alternative routes or delaying trips during congestion can save fuel.