Prospective owners of a 2017 Infiniti QX70 RWD with the 3.7L V6 should know it gets 19 MPG combined. This isn’t a vehicle bought for its frugality; it’s a style statement, a mid-size SUV with sporting intentions and a distinctive profile. The buyer eyeing a QX70 understands this trade-off: head-turning looks and a responsive engine in exchange for below-average fuel economy within its class.

City and highway performance

The EPA estimates the 2017 Infiniti QX70 RWD at 17 MPG in the city and 24 MPG on the highway. The city figure reflects the demands placed on the 3.7L V6 in stop-and-go traffic, where the engine works harder and spends more time idling. The highway number is more respectable, achievable when cruising at steady speeds. However, the QX70’s aerodynamic profile, while visually appealing, isn’t optimized for maximum fuel efficiency at higher speeds. The seven-speed automatic transmission, while generally smooth and responsive, isn’t geared for ultimate fuel savings either, prioritizing performance over pure economy. This powertrain urges drivers to make use of all 325 horsepower, which is usually incompatible with fuel conservation.

Annual fuel cost

According to EPA estimates, the annual fuel cost for the 2017 Infiniti QX70 RWD is $3,050. This calculation is based on driving 15,000 miles per year and using national average fuel prices. It is important to remember that your actual fuel costs may vary quite a bit, depending on your driving habits, the type of driving you mostly do, and fluctuations in fuel prices. Aggressive driving will increase your annual fuel expense, while cautious driving practices might slightly lower it.

Real-world expectations

While the EPA estimates provide a benchmark, real-world fuel economy often differs. Many QX70 owners report figures slightly below the EPA’s 19 MPG combined. The reasons for this variation are many. Urban drivers in congested areas will struggle to achieve 17 MPG, especially with frequent short trips. Conversely, those who primarily use the QX70 for highway driving might see numbers closer to, or even slightly above, 24 MPG. Driving style is critical. A heavy foot on the accelerator or frequent bursts of speed will negatively impact fuel consumption. Tire pressure, vehicle maintenance, and even weather conditions play a role.

How it compares

Compared to its competitors, the 2017 Infiniti QX70’s fuel economy lags. For example, a 2017 Acura MDX with front-wheel drive achieves 22 MPG combined, while a Lexus RX 350 boasts 23 MPG combined. Even a BMW X5 with its base engine manages around 21 MPG combined. The QX70 buyer acknowledges they’re sacrificing some fuel efficiency for the QX70’s sharper styling and engaging driving dynamics. Someone prioritizing fuel efficiency might consider the Lexus, while someone wanting three rows could look at the Acura. But for those drawn to the QX70’s distinctly sporty character, the MPG trade-off is often deemed acceptable. You can also compare QX70 MPG across all years to see how this model stacks up.

Tips to maximize efficiency

The most immediate way to improve fuel economy is to adjust your driving habits. Avoid aggressive acceleration and hard braking. Maintain a steady speed on the highway and anticipate traffic flow to minimize unnecessary speed changes. The QX70’s V6 relishes being driven hard, but resist that urge during typical commuting to save MPGs.

Ensure your tires are properly inflated, as under-inflated tires increase rolling resistance and reduce fuel efficiency. Check your tire pressure regularly and inflate them to the pressure indicated on the sticker inside the driver’s side doorjamb. Also, consider using the recommended grade of fuel, as using lower octane fuel than recommended can negatively impact engine performance and fuel consumption.

Regular maintenance is critical for optimal fuel economy. Keep your engine properly tuned and replace air filters according to the manufacturer’s recommendations. A clean air filter ensures proper airflow to the engine, which helps it run more efficiently. Old spark plugs can also reduce the engine’s fuel efficiency.

Minimize the use of accessories that draw power from the engine, such as air conditioning. While AC is essential, especially in warmer months, use it sparingly when possible. Other electrical loads such as heated seats and rear defrosters also impact fuel efficiency, so strategically use those features. Explore all Infiniti fuel economy data for other models that might fit your lifestyle.