28 MPG combined isn’t going to win any hypermiling contests, but for the 2018 Infiniti Q50 Hybrid AWD 3.5L 6-cyl, it’s an acceptable tradeoff. This isn’t a Prius competitor; it’s a performance-oriented, all-wheel-drive luxury sedan with hybrid technology to increase efficiency without sacrificing driving enjoyment. Q50 Hybrid buyers typically want a smooth V6 engine and a comfortable, tech-laden interior more than maximum gas mileage.

City and highway performance

The EPA estimates for the 2018 Infiniti Q50 Hybrid AWD are 26 MPG in the city and 30 MPG on the highway. This difference shows the hybrid system’s strength in cities where regenerative braking captures energy during frequent stops, powering the electric motor to assist the V6 engine. This allows the V6 to operate more efficiently at lower speeds.

On the highway, the Q50 Hybrid relies more on its 3.5L V6, resulting in slightly lower fuel economy but still reasonable numbers for a sedan of its size and power. The all-wheel drive system also impacts efficiency, adding weight and mechanical drag compared to a rear-wheel drive version. The Q50 Hybrid is equipped with a seven-speed automatic transmission that helps performance and fuel economy. The transmission shifts smoothly and efficiently, keeping the engine in its optimal power band.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Infiniti Q50 Hybrid AWD is $2,050. This is based on driving 15,000 miles per year and using national average fuel prices. Your actual fuel costs will vary depending on your driving habits, the type of fuel you use, and local gas prices. Drivers who spend more time in stop-and-go traffic may see a lower annual fuel cost because the hybrid system gets greater use in those conditions.

Real-world expectations

While the EPA estimates provide a useful baseline, real-world fuel economy can differ. Q50 Hybrid owners have said that they achieve figures close to the EPA estimates, particularly in mixed driving conditions. Aggressive driving will reduce fuel economy, while smooth driving using the hybrid system’s features can improve it. Factors such as tire pressure, vehicle maintenance, and weather also affect fuel efficiency.

How it compares

The 2018 Q50 Hybrid AWD’s fuel economy is average for its class. The Lexus ES 300h achieves a higher 44 MPG combined, but the ES 300h focuses more on fuel efficiency than the Q50 Hybrid does.
The Acura TLX Hybrid, offered in previous years, achieved around 31 MPG combined, slightly better than the Q50.

Non-hybrid rivals like the BMW 330i xDrive achieve around 28 MPG combined, similar to the Q50 Hybrid, but without electric assist. Potential buyers should weigh fuel economy against other factors such as performance, luxury features, and all-weather capability. Researching Infiniti fuel economy across all models and comparing Q50 MPG across all years helps buyers make informed decisions.

Tips to maximize efficiency

Use the Q50 Hybrid’s regenerative braking system. Anticipate stops and ease off the accelerator gradually to let the system capture energy and recharge the battery. Avoiding hard braking improves fuel economy and extends the life of your brake pads.

Watch the energy flow display on the infotainment screen to see how the hybrid system works. This helps you adjust your driving habits to maximize the use of the electric motor and minimize gasoline consumption.

Keep your tires properly inflated. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure often and inflate them to the recommended pressure listed on the doorjamb sticker.

Reduce your use of accessories, such as air conditioning and heated seats, as they put a strain on the engine and reduce fuel efficiency. Use these features wisely, especially during short trips.

Avoid aggressive driving such as rapid acceleration and hard braking. Smooth, consistent driving improves fuel economy and enhances the overall driving experience. The Q50 Hybrid rewards a relaxed driving style with surprisingly good gas mileage.