The 2024 Infiniti QX55 AWD gets 25 MPG combined. This isn’t going to win any efficiency awards in the compact crossover segment. It’s a calculated trade-off many buyers are willing to make for sleek coupe-like styling and a luxurious driving experience. The QX55 is for those who value distinctive design and premium appointments over significant fuel savings. These drivers are willing to accept slightly below-average mileage for the visual flair and upscale ambiance that Infiniti delivers.

City and highway performance

The EPA estimates the QX55 at 22 MPG in the city and 28 MPG on the highway. The city rating reflects the stop-and-go nature of urban driving, where the turbocharged 2.0-liter engine works harder and has less opportunity to operate efficiently. The highway figure is more respectable, suggesting that longer trips at consistent speeds yield better fuel economy. Drivers who frequently navigate congested city streets should anticipate leaning toward the lower end of this range, while those with predominantly highway commutes can expect closer to 28 MPG. The automatic transmission (AV-S8) is designed to optimize fuel economy, but the QX55’s sloping roofline and aerodynamic compromises affect overall numbers.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2024 Infiniti QX55 AWD at $2,300. This figure is based on driving 15,000 miles per year, with a fuel price that reflects the national average for premium gasoline, as recommended for optimal performance in the QX55. This cost provides a benchmark for potential owners to gauge the financial implications of owning this vehicle. Individual spending may vary based on driving habits and local fuel prices. If you drive more aggressively or live in an area with higher fuel costs, your numbers will likely be higher. For a deeper look, explore QX55 MPG across all years.

Real-world expectations

EPA estimates provide a useful yardstick, but real-world fuel economy often deviates due to individual driving styles, traffic conditions, and terrain. Variations should be expected based on how aggressively you accelerate, how frequently you use the QX55’s various driving modes, and the type of roads you typically navigate. Cold weather can also impact fuel economy, as can the use of accessories like air conditioning and heated seats. QX55 drivers report numbers within a reasonable range of the EPA estimates, but mileage will vary.

How it compares

The QX55’s fuel economy places it mid-pack within the compact luxury crossover segment. The Acura RDX, another stylish contender, manages around 23 MPG combined with its turbocharged 2.0-liter engine. The BMW X4, with its similar coupe-like design, achieves roughly 24 MPG in its base configuration. The Lexus NX 350h hybrid offers significantly better fuel economy, boasting around 39 MPG combined. These comparisons highlight the QX55’s position in the market. It’s not designed to be the most frugal option, but it also isn’t the worst offender in its class. It represents acceptable fuel consumption offset by a focus on aesthetics and luxury features. If fuel economy is a top priority, alternatives like the NX 350h would be a better fit. For all Infiniti fuel economy data, check out our other model pages.

Tips to maximize efficiency

Use the QX55’s drive modes. Selecting “Eco” mode can help optimize fuel efficiency by adjusting throttle response and transmission shift points for a more relaxed driving experience. This setting is perfect for daily commutes or situations where performance isn’t a primary concern.

Maintain a consistent speed and avoid aggressive acceleration. Rapid acceleration and hard braking consume considerably more fuel. By anticipating traffic flow and maintaining a steady pace, you can significantly improve your fuel economy, especially on the highway.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder and reducing fuel efficiency. Check your tire pressure regularly and inflate them to the recommended level specified on the driver’s side doorjamb.

Reduce unnecessary weight. Carrying excessive cargo adds to the vehicle’s overall weight, which reduces fuel economy. Remove any unnecessary items from the trunk and passenger areas to lighten the load and improve efficiency.

Consider shorter trips. Cold starts are particularly bad for fuel economy. If you have multiple errands to run, combine them into a single trip to allow the engine to reach its optimal operating temperature and improve its efficiency.