20 MPG combined. That’s the figure for the 2015 Infiniti Q70 AWD 3.7L, and it makes it clear: this isn’t a hybrid. This Q70 offers an engaging driving experience, all-weather capability, and a level of luxury that appeals to buyers who want performance over saving gas. The target customer wants a powerful engine and confident handling more than getting every last mile from expensive gas.

City and highway performance

The EPA estimates suggest 18 MPG in the city and 24 MPG on the highway. Don’t expect to consistently hit the highway figure if you’re frequently passing other cars. The 3.7L V6 is responsive and eager to rev, which can tempt drivers to push the accelerator. Also, city driving with stop-and-go traffic will likely result in fuel economy below the EPA estimate. However, if you primarily cruise at steady speeds on the open road, achieving or even slightly exceeding 24 MPG is possible. Remember the Q70’s AWD system adds weight and complexity, impacting fuel consumption compared to rear-wheel-drive models. For a broader look at the range, explore Q70 MPG across all years.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,900 for the 2015 Infiniti Q70 AWD 3.7L. This calculation is based on driving 15,000 miles per year, with a fuel price reflecting the national average price for premium gasoline. Keep in mind that actual fuel costs will vary based on your driving, and fluctuating fuel prices in your area. Drivers with longer commutes or those in areas with higher fuel costs can anticipate spending more annually.

Real-world expectations

The published EPA estimates are a starting point, but real-world fuel economy can differ. If you use the engine’s power and enjoy the Q70’s driving, your average fuel economy may be closer to the lower end of the range, potentially even dipping slightly below 20 MPG combined. But, mindful drivers who accelerate smoothly, anticipate traffic, and minimize idling can likely achieve results closer to the EPA estimates, and possibly even get better mileage on longer highway drives.

How it compares

The 2015 Infiniti Q70 AWD 3.7L is in a segment with other luxury sedans. The Acura TLX SH-AWD with its 3.5L V6 offers a slightly better combined EPA rating of 25 MPG, but the TLX focuses on fuel efficiency and lacks the Q70’s rear-drive feel. Then there’s the Lexus GS 350 AWD, rated at 22 MPG combined. The GS offers a similar blend of luxury and performance, but with a different design. For the buyer looking for lower fuel costs, the BMW 535d, with a diesel engine, delivers significantly better MPG, around 30 MPG combined, but this comes at the cost of a different driving experience and potentially higher maintenance costs. These comparisons are important because buyers in this segment often investigate multiple vehicles. If you want to see how others in Infiniti’s lineup perform, check all Infiniti fuel economy data.

Tips to maximize efficiency

Maintaining optimal tire pressure is important. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure regularly and inflate them to the manufacturer’s recommended levels, found on the sticker inside the driver’s side door jamb.

Avoid aggressive driving, particularly rapid acceleration and hard braking. The Q70’s responsive throttle can be tempting, but smooth acceleration and anticipating traffic conditions can improve fuel economy.

Regular maintenance, including oil changes and air filter replacements, is critical for good engine performance. A clean air filter ensures the engine receives enough airflow, while fresh oil reduces friction, both helping fuel economy.

Minimize idling. If you anticipate waiting for more than a minute or two, turn off the engine. Idling consumes fuel without covering any distance, and it adds up over time, especially in urban environments.

Consider using cruise control on the highway. Maintaining a consistent speed minimizes unnecessary acceleration and deceleration, both of which hurt fuel economy. This feature helps the Q70 maintain a steady pace, leading to more efficient highway driving.