The 2016 Infiniti Q70 with the 5.6L V8 engine achieves 19 MPG combined. While not the most efficient, many Q70 buyers are willing to accept this for the experience of a naturally aspirated V8, now less common with the rise of turbos and hybrids. The Q70 5.6 is appealing because of its power, distinctive exhaust, and the driving experience it provides. These owners prioritize performance and a certain level of luxury.

City and highway performance

The EPA estimates the Q70 5.6 at 16 MPG in the city and 24 MPG on the highway. These numbers are tied to the engine and the transmission’s programming. The V8’s fuel consumption is noticeable in urban environments as stop-and-go traffic requires frequent acceleration and deceleration. The seven-speed automatic, while generally smooth, doesn’t hide the engine’s displacement. Highway cruising offers some improvement, but the Q70’s aerodynamic profile and the engine’s fuel requirements at higher speeds prevent truly impressive efficiency. A lighter foot can help drivers achieve the EPA’s highway number.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2016 Infiniti Q70 5.6 at $3,050. This is based on driving 15,000 miles per year and national average fuel prices. This is a benchmark because driving habits and gasoline prices affect the actual cost. Drivers in congested city environments or with heavier driving styles will likely exceed this estimate, while those with highway commutes and a conservative approach may see lower expenses. Understanding this $3,050 starting point is important for factoring fuel costs into the overall ownership of the Q70 5.6.

Real-world expectations

Real-world fuel economy often differs from the EPA rating. Q70 5.6 owners report combined MPG figures between 17 and 21, depending on driving style and location. Aggressive acceleration, short trips, and hilly terrain can negatively impact fuel consumption. Long highway stretches at a consistent speed, with gentle acceleration, can yield numbers closer to the EPA’s 24 MPG highway estimate. Manage expectations, as the Q70 5.6 is designed for a rewarding driving experience, which comes at a cost.

How it compares

The 2016 Infiniti Q70 5.6’s fuel economy sits within a specific range when compared to its competitors. The 2016 BMW 550i, with a V8, delivers a similar 17 MPG city and 26 MPG highway. The Mercedes-Benz E550, with its V8, posts numbers around 18 MPG city and 25 MPG highway. These figures highlight that the Q70’s fuel consumption is typical for V8-powered luxury sedans of its era. Choosing the Q70’s V6 improves fuel economy to around 21 MPG combined, but reduces the engine’s character. The Lexus GS 350 provides 23 MPG combined, and the Acura RLX offers 24 MPG combined, but these are different engines and driving experiences. If fuel economy is a priority, vehicles like these are worth considering. The driver considering all Infiniti fuel economy data has made a decision balancing fuel efficiency with engine performance.

Tips to maximize efficiency

Anticipate traffic flow to minimize unnecessary acceleration and braking. The Q70’s V8 is responsive, and each burst of power consumes fuel. Maintaining a consistent speed and avoiding sudden stops can improve efficiency. Regularly check tire pressure. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Inflate tires to the manufacturer’s recommended level, typically on a sticker inside the driver’s side door.

Consider using the Q70’s “Eco” mode, if included. It might slightly dull throttle response, but it optimizes the engine and transmission for improved fuel economy. This mode can be beneficial during highway driving. You might see improved Q70 MPG across all years.

Avoid carrying unnecessary weight in the vehicle. Extra weight increases the amount of energy required to accelerate and maintain speed. Remove any non-essential items from the trunk or passenger compartment. Even small weight reductions can contribute to improvements in fuel economy.

Regular maintenance is critical. Ensure the engine is properly tuned and that all fluids are at the recommended levels. A well-maintained engine operates more efficiently, reducing fuel consumption. Pay attention to air filter replacement, as a clogged air filter restricts airflow and reduces engine performance, increasing fuel usage.