115 MPGe combined makes the 2026 Audi Q4 45 e-tron an efficient, premium compact electric SUV with the four-ring badge. This isn’t a stripped-down efficiency special, it’s a fully formed Audi experience wrapped in a practical, stylish package, delivering quiet, torque-rich power with lower fuel costs. The buyer drawn to the Q4 45 e-tron wants the perceived luxury and driving refinement of an Audi, but for them, range and operational cost are just as important as the quality of the interior materials or the responsiveness of the infotainment. This vehicle speaks directly to urban and suburban professionals – often young families or empty nesters – who value cutting-edge technology, a premium aesthetic, and a tangible reduction in their carbon footprint, all without sacrificing the expected Audi character.

City and highway performance

Delving deeper into the 115 MPGe figure reveals how the Q4 45 e-tron truly excels in its natural habitat. The 125 MPGe city rating is where the vehicle shines, reflecting the inherent advantages of electric powertrains in stop-and-go traffic. Here, regenerative braking systems are constantly recovering energy, translating what would be wasted momentum in a gasoline car into usable electricity to extend range. For an urban commuter or those navigating suburban streets with frequent stops, this efficiency means less frequent charging and maximum utilization of every electron. Out on the open road, the 104 MPGe highway figure, while still excellent for an SUV of this size, shows the expected slight decrease in efficiency. Maintaining higher speeds requires more continuous energy output, and aerodynamic drag becomes a more significant factor. However, for a vehicle tasked with daily commutes or weekend excursions, this remains a remarkably strong showing, reaffirming the Q4 45 e-tron’s mission as a highly practical and economical electric vehicle.

Annual fuel cost

The EPA estimates an annual fuel cost of just $650 for the 2026 Audi Q4 45 e-tron. This figure is derived from an assumption of 15,000 miles traveled per year, with 55% of those miles driven in the city and 45% on the highway, and calculated using national average electricity prices. For the average driver, $650 per year represents a significant financial advantage over a comparable gasoline-powered premium SUV. Consider the typical Audi buyer upgrading from a Q3 or even a Q5, their previous annual fuel bills were likely multiples of this. This remarkably low cost isn’t just about saving money, it’s about the convenience of rarely thinking about fuel expenses. It underscores one of the core value propositions for electric vehicles: predictable and significantly reduced operational costs. The buyer for the Q4 45 e-tron sees this figure and understands the immediate, tangible benefit to their household budget, making the initial investment even more justifiable.

Real-world expectations

While the EPA’s 115 MPGe combined rating for the Q4 45 e-tron provides an excellent benchmark, real-world efficiency will always be subject to a range of variables. Driving style is important, aggressive acceleration and heavy braking will naturally consume more energy than smooth, measured inputs. Climate also plays a significant role: extremely cold temperatures can reduce battery efficiency and range, as more energy is diverted to cabin heating and keeping the battery at an optimal operating temperature. Conversely, very hot weather requiring constant use of air conditioning will also impact efficiency. Topography, load, and tire pressure are additional factors that influence actual energy consumption. Owners should expect to see numbers very close to the EPA estimates when driving conservatively in mild to warm conditions, particularly in city environments. On longer highway journeys in colder climates, a slight reduction in overall efficiency and thus range is a realistic expectation. However, even with these variables, the Q4 45 e-tron consistently delivers efficiency that far outstrips any gasoline-powered equivalent.

How it compares

The 2026 Audi Q4 45 e-tron’s 115 MPGe combined rating places it squarely at the forefront of the compact luxury electric SUV segment, though direct comparisons require nuance. A primary rival, the Tesla Model Y Long Range, boasts an impressive 123 MPGe combined (2024 model year data), offering a slightly higher efficiency, often at a different price point and with a distinct brand identity. BMW’s direct competitor, the iX1 (not sold in the US, but conceptually relevant), aims for similar efficiency targets, while the Mercedes-Benz EQB 250+ (2024 model year) comes in around 107 MPGe combined, offering a more upright and traditional SUV aesthetic. Volvo’s XC40 Recharge (2024 model year Twin Motor) manages 98 MPGe combined, trading some efficiency for higher performance. Buyers considering the Q4 45 e-tron are often cross-shopping these very vehicles. They value the Audi’s unique blend of a sophisticated powertrain, a more traditional interior layout than a Tesla, and a driving dynamic that feels distinctly German, perhaps more refined than the XC40 Recharge or EQB. They accept the 115 MPGe as competitive, knowing they are getting all Audi fuel economy data with a badge, a driver-centric cockpit, and a build quality that often feels a cut above. For a deeper dive, you can explore the Q4 MPG across all years.

Tips to maximize efficiency

To get the most out of your Q4 45 e-tron’s impressive efficiency, master the art of regenerative braking. Anticipate stops and lift off the accelerator earlier, allowing the car to recuperate energy naturally rather than relying heavily on friction brakes. This not only saves energy but also extends the life of your brake pads.

Maintain proper tire pressure. Under-inflated tires increase rolling resistance, forcing the motor to work harder and consume more energy. Check your tires regularly, especially as temperatures fluctuate, to ensure they are at the manufacturer’s recommended PSI.

Use the vehicle’s specific driving modes. The “Efficiency” or “Eco” mode, when available, will often adjust throttle response, climate control settings, and even power limits to prioritize energy conservation over performance. This is particularly useful for maximizing range on longer journeys or when battery levels are low.

Pre-condition the cabin while plugged into a charger. Using shore power to heat or cool the interior before you depart means the battery doesn’t have to bear the full burden of initial climate control, preserving more energy for driving.

Consider moderate highway speeds. While the Q4 45 e-tron is efficient at speed, aerodynamic drag increases exponentially. Driving at 65 mph instead of 75 mph can significantly improve your highway MPGe and extend your practical range, especially on longer trips.