The 2024 Genesis G90 MHEV 3.5L 6-cyl gets 20 MPG combined. This is a trade-off buyers likely expect. They prioritize luxury and smooth power over getting the best possible MPG. This flagship sedan is for buyers who value advanced technology, a quiet cabin, and a commanding presence.

City and highway performance

The G90 MHEV’s EPA ratings are 17 MPG in the city and 24 MPG on the highway. The city figure shows what happens when hauling a near-5,000-pound luxury sedan through stop-and-go traffic. The mild-hybrid system gives a small boost to initial acceleration, but it’s not enough to fix the inherent issues of urban driving. The highway number is more respectable, showing what the eight-speed automatic transmission can do. The engine can also conserve fuel at cruising speeds. Still, those used to family sedans or smaller luxury models may fill up more often.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2024 Genesis G90 MHEV at $2,900. This is based on driving 15,000 miles per year. The assumed fuel price reflects the national average. It’s a standard calculation for comparing running costs. Individual fuel costs will vary based on driving habits, local fuel prices, and city versus highway miles. Premium fuel is recommended, which increases the annual expense.

Real-world expectations

EPA estimates are a baseline. Real-world fuel economy often differs. Aggressive driving, heavy acceleration, and the G90’s comfort features can hurt fuel consumption. A relaxed driving style and consistent speeds can help drivers get close to the EPA estimates. The G90’s comfort can relax drivers, which can unintentionally benefit fuel economy. However, the turbocharged engine’s power is tempting, and performance will impact MPG.

How it compares

The G90’s 20 MPG combined is normal for full-size luxury sedans with similar performance. A Mercedes-Benz S500 with a similar mild-hybrid system gets around 23 MPG combined. The BMW 740i, with its inline-six and no hybrid assistance, gets 25 MPG combined. The Lexus LS 500, with its non-hybrid V6, gets about 21 MPG combined. The G90 buyer is likely comparing these vehicles. Fuel economy is a factor, but not always the main one. Features, brand recognition, and overall value are often more important.

Tips to maximize efficiency

Use the G90’s drive modes. The “Eco” mode will reduce throttle response and optimize transmission shift points for fuel efficiency. It may reduce responsiveness, but it helps for commuting when performance isn’t a priority. Try this mode and check your fuel consumption to see the potential savings.

Minimize idling time. The G90 is comfortable, but idling wastes fuel. If you’ll be stopped for more than a minute or two, turn off the engine. Restarting is smooth because of the mild-hybrid system.

Keep tires properly inflated. Underinflated tires increase rolling resistance. This makes the engine work harder and burn more fuel. Check your tire pressure often and inflate them to the recommended pressure on the door jamb sticker. This is simple and helps fuel economy. You can review G90 MPG across all years on our site for further comparison.

Avoid aggressive acceleration and braking. Smooth inputs maximize fuel efficiency. The G90’s power is tempting, but avoid flooring the accelerator often. Watch traffic and keep a consistent speed to save energy. Also browse all Genesis fuel economy data for further research.