30 MPG combined is a surprisingly respectable figure for the 2015 Infiniti Q50S Hybrid, a car that values performance and a luxury feel over extreme frugality. This isn’t a basic economy car; it’s a sleek, stylish sedan with a hybrid powertrain designed for brisk acceleration and a premium driving experience. The target customer, often an affluent professional who values both efficiency and a touch of sportiness, likely sees fuel economy as a consideration, but not the main reason for buying. They want a car that’s fun to drive and makes a statement, and the Q50S Hybrid balances these needs. They’re willing to accept respectable, rather than stellar, fuel economy to get it.

City and highway performance

The EPA estimates for the 2015 Q50S Hybrid are 28 MPG in the city and 33 MPG on the highway. While both figures are good for a V6-powered sedan, the highway number is particularly impressive and shows the hybrid system’s ability to operate more efficiently at steady speeds. The city MPG benefits from regenerative braking and electric-only driving at lower speeds, which greatly reduces fuel use during stop-and-go traffic. This powertrain works well in urban environments, while the highway MPG shows that the Q50S Hybrid can perform well on long trips. If your daily commute includes long stretches of open road, you will likely get close to, or even exceed, the quoted highway figure.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2015 Infiniti Q50S Hybrid is $1,950. This is based on driving 15,000 miles per year and assumes the use of fuel priced at the national average. Your actual fuel costs may change depending on your driving habits, local fuel prices, and the type of fuel you use, although the Q50S Hybrid doesn’t require premium fuel. However, this $1,950 estimate provides a benchmark for comparing the running costs of the Q50S Hybrid against other vehicles in its class, giving potential buyers a quick snapshot of what to expect at the pump.

Real-world expectations

While the EPA estimates provide a reference point, real-world fuel economy can be different. Factors such as driving style, traffic conditions, and even tire pressure can affect your MPG. Aggressive acceleration and frequent hard braking, for example, will reduce fuel efficiency. Properly maintaining your Q50S Hybrid, including regular servicing and keeping your tires inflated to the recommended pressure, will help you get the best possible fuel economy. Owners online report a range of experiences, with some struggling to consistently hit the EPA combined figure, while others regularly exceed it. Your mileage will vary, but aiming for smooth, consistent driving is key.

How it compares

In the field of mid-size luxury sedans with performance features, the 2015 Q50S Hybrid holds its own against competitors. The Lexus ES 300h, a direct rival, typically achieves around 40 MPG combined, which shows it values fuel economy over sportiness. The BMW 330e, another plug-in hybrid competitor, offers better electric-only range and potentially higher MPG if charged regularly, but lacks the Q50S Hybrid’s V6 power and refined driving experience. Even non-hybrid competitors highlight the Q50S Hybrid choice: The Audi A4, for example, with its 2.0T engine, only achieves around 27 MPG combined. Buyers in this segment often compare these cars, weighing the trade-offs between MPG, performance, and brand status. Many will also check Q50S MPG across all years before buying.

Tips to maximize efficiency

Use the Q50S Hybrid’s Eco mode, which optimizes the powertrain for fuel efficiency. This mode reduces throttle response and adjusts the climate control system to conserve energy, yielding improvements.

While the car is fun to drive fast, smooth and steady acceleration is key to maximizing fuel economy.

Monitor the energy flow display on the infotainment screen. This helps you understand how the hybrid system is working and lets you change your driving habits to maximize regenerative braking and electric-only driving. Anticipating traffic conditions and coasting whenever possible can make a big difference.

Ensure your tires are properly inflated to the recommended pressure. Under-inflated tires increase rolling resistance, which hurts fuel economy. Check your tire pressure regularly, especially during seasonal temperature changes.

Minimize the use of accessories like air conditioning and heated seats, as they draw power from the engine and reduce fuel efficiency. Use them sparingly, especially during short trips. If you must use the A/C, recirculate the inside air to reduce the load on the system.

Consider the weight you’re carrying. Remove unnecessary items from your trunk to reduce the overall weight of the vehicle. Every extra pound adds to fuel consumption. By following these tips, combined with responsible driving habits, the owner will get the best possible fuel economy. And for those interested in more Infiniti data, it’s helpful to review all Infiniti fuel economy data for the full brand perspective.