The 2019 Infiniti Q50 3.0L 6-cyl achieves 23 MPG combined. This means it’s not a fuel-sipping champion, but a comfortable and stylish sport sedan that requires a reasonable compromise at the pump. Q50 buyers want a mix of luxury, spirited performance from its twin-turbo V6, and a distinctive exterior. Fuel economy is a consideration, but rarely the main reason for a purchase.

City and highway performance

The EPA estimates the 2019 Infiniti Q50 3.0L V6 at 20 MPG in the city and 29 MPG on the highway. The city rating reflects stop-and-go traffic, where the V6 consumes more fuel compared to cruising. The 29 MPG highway figure is more attainable during long road trips because the vehicle’s seven-speed automatic transmission helps keep engine RPMs relatively low at cruising speeds. Drivers should remember that aggressive acceleration and frequent bursts of speed will significantly reduce these numbers. The twin-turbo V6 is engineered to deliver power and a pleasing driving experience, which reduces optimal MPG.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2019 Infiniti Q50 3.0L 6-cyl is $2,500. This is based on driving 15,000 miles per year and using national average fuel prices, which can change. The calculation assumes a fairly balanced mix of city and highway driving. Individual fuel costs can vary depending on driving habits, local fuel prices, and the specific grade of gasoline. While the EPA does not specify a required fuel grade, premium fuel (91 octane or higher) is generally recommended to unlock the engine’s full performance. Using regular unleaded will likely deliver slightly lower performance and could reduce fuel economy.

Real-world expectations

While the EPA provides an estimate, real-world fuel economy often differs. Q50 drivers who frequently drive fast or spend a lot of time in urban environments are likely to see numbers closer to or even below the 20 MPG city rating. But those who primarily use the Q50 for highway commuting or good driving habits may achieve figures closer to or slightly above the 29 MPG highway rating.

Tire pressure, vehicle load, and even weather conditions can subtly impact fuel consumption. Regularly checking tire pressure is a simple way to ensure optimal efficiency. The Q50’s driving dynamics are tuned for performance, so consistently chasing maximum MPG might detract from the overall driving experience.

How it compares

Within the sport sedan segment, the 2019 Infiniti Q50’s fuel economy is near the middle. The BMW 330i, for example, achieves a combined 28 MPG, making it a more fuel-efficient choice, though the Q50’s V6 offers a power advantage over the 330i’s turbocharged four-cylinder. The Acura TLX with the V6 engine returns around 24 MPG combined, about the same as the Q50. The Genesis G70 3.3T, with its more powerful twin-turbo V6, delivers around 20 MPG combined, showing the trade-off between performance and fuel consumption.

Buyers considering the Q50 often cross-shop these competitors, weighing the Q50’s blend of luxury, performance, and value against the fuel efficiency gains offered by some rivals. Reviewing Q50 MPG across all years can help buyers understand how efficiency has evolved across model years. You can also review all Infiniti fuel economy data to compare the Q50 against other models in the Infiniti lineup.

Tips to maximize efficiency

Use the Q50’s selectable drive modes. The “Eco” mode recalibrates the throttle response and transmission mapping to prioritize fuel efficiency. While it may slightly reduce the immediate responsiveness of the engine, it can help save fuel, especially during city driving.

Drive smoothly. Avoid abrupt acceleration and braking, as these actions consume much more fuel. Anticipate traffic flow and maintain a steady speed when possible. The Q50’s powerful engine can tempt drivers to accelerate quickly, but resisting that urge will help fuel economy.

Make sure your tires are properly inflated. Underinflated tires increase rolling resistance, which reduces MPG. Check your tire pressure regularly (monthly) and inflate them to the recommended pressure specified on the sticker located on the driver’s side doorjamb. Even a small increase in tire pressure can make a difference.

Minimize idling. Letting the engine idle for long periods consumes fuel. If you anticipate being stopped for more than a minute or two, turn off the engine. Modern vehicles like the Q50 are designed to restart quickly and reliably, so there’s no need to keep the engine running when stationary.

Consider reducing your use of accessories like air conditioning. While air conditioning is essential for comfort in hot weather, it puts more load on the engine, which reduces fuel efficiency. When possible, use the Q50’s ventilation system without air conditioning or roll down the windows to save fuel.