| Engine | 2.0L 4-cyl |
| Transmission | Automatic (S7) |
| Drive | All-Wheel Drive |
| Fuel Type | Premium Gasoline |
| Vehicle Class | Midsize Cars |
| Engine Desc | SIDI |
| Start-Stop | Yes |
| EPA Vehicle ID | 38107 |
24 MPG combined isn’t a headline figure, but it’s a reasonable compromise for the 2017 Infiniti Q50 AWD 2.0L 4-cyl. This car prioritizes style and a connected driving feel instead of focusing solely on fuel efficiency. This Q50 configuration appeals to buyers who want the assurance of all-wheel drive, the lower price of the 2.0-liter engine, and the upscale experience expected from the Infiniti brand, even if ultimate efficiency isn’t their primary concern.
City and highway performance
The EPA estimates for this Q50 variant put city driving at 22 MPG and highway cruising at 28 MPG. The city figure reflects the challenges of stop-and-go traffic, where the engine’s turbocharger works harder and the all-wheel-drive system engages more frequently. On the open road, the Q50’s smooth-shifting seven-speed automatic transmission helps the 2.0-liter engine settle into a more efficient rhythm, allowing you to get closer to the advertised 28 MPG.
However, aggressive driving will reduce those numbers. Consistently carrying extra weight will also lower fuel economy. While the 2.0L engine is sufficient for daily driving, it requires more aggressive throttle to achieve the same acceleration as the V6 options in the Q50 lineup.
Annual fuel cost
The EPA estimates the annual fuel cost for the 2017 Infiniti Q50 AWD 2.0L at $2,400. This is based on driving 15,000 miles per year and using national average fuel prices. Remember that this is only an estimate. Your actual fuel costs will vary depending on your driving habits, the type of fuel you use, and where you live. Fuel costs in some states can be significantly higher, impacting the annual expense.
To see all Infiniti fuel economy data, compare across the range. For example, a V6-powered Q50 offers more power, but it will likely increase your annual fuel bill.
Real-world expectations
The EPA provides a standardized benchmark, but real-world fuel economy can differ. Expect to see numbers slightly below the EPA estimates, especially if you frequently drive in heavy traffic, or accelerate quickly. Consistent highway driving at moderate speeds should allow you to approach the 28 MPG highway figure. However, strong acceleration and frequent braking will negatively impact your fuel consumption.
The AWD system provides added grip and stability in bad weather. It also adds weight and drivetrain loss, contributing to slightly lower MPG compared to the rear-wheel-drive version.
How it compares
The 2017 Infiniti Q50 AWD 2.0L is in the middle of its class for fuel economy. The Acura TLX 2.4L with front-wheel drive achieves closer to 28 MPG combined, making it a more fuel-efficient choice. However, the TLX’s SH-AWD system drops its combined MPG closer to the Q50’s rating. The BMW 320i xDrive, another competitor, gets around 26 MPG combined. The Mercedes-Benz C300 4MATIC from that time generally achieves similar numbers to the Q50. For some buyers, small differences in fuel economy are less relevant than styling, features, and driving dynamics. Someone choosing between these vehicles might value Infiniti’s comfortable seats and advanced technology and be willing to accept the slightly lower MPG.
Tips to maximize efficiency
Make sure your tires are properly inflated. Correct tire pressure reduces rolling resistance, which improves fuel economy. Regularly check the tire pressure and inflate them to the recommended level on the sticker inside the driver’s side door. Even a few PSI below the recommended level can hurt your MPG.
Avoid aggressive driving. Rapid acceleration and hard braking use more fuel than smooth inputs. Anticipate traffic flow and maintain a consistent speed. Using cruise control on the highway can help maintain a steady pace and help fuel efficiency.
Minimize idling. Idling wastes fuel and creates emissions. If you will be stationary for more than a minute or two, turn off the engine. Modern engines restart quickly, so you won’t cause any damage.
Remove any unnecessary items from your vehicle. Excess weight increases the amount of energy needed to accelerate and maintain speed. Clearing out your trunk and backseat can make a difference, particularly for drivers who carry a lot of cargo. Also, remove roof racks or cargo carriers when not in use, as they increase aerodynamic drag and reduce fuel economy. Browsing Q50 MPG across all years can give a sense of how driving style impacts fuel efficiency.