115 MPG combined is an extraordinary figure and shows what the 2025 Audi Q4 45 e-tron is designed to do. It’s not just an SUV trying to save fuel, but an electric vehicle (EV) designed to maximize efficiency and deliver a premium driving experience for the buyer interested in using less gas. This compact SUV aims at urban professionals and suburban families who prioritize sustainability and technology. These buyers accept the trade-offs inherent in EV ownership, like charging time and range anxiety, because they value reducing their carbon footprint without sacrificing luxury or performance.

City and highway performance

Those 125 city MPG and 104 highway MPG ratings show where the Q4 45 e-tron performs best. Electric vehicles typically excel in city driving due to regenerative braking, which recaptures energy during deceleration. The Q4 45 e-tron makes the most of this technology, converting kinetic energy back into electricity to replenish the battery, extending range in stop-and-go traffic. On the highway, its aerodynamic design helps it maintain efficiency, although higher speeds generally drain the battery quicker than city driving. Considering that many Q4 45 e-tron owners use their vehicles predominantly for commuting and local errands, the city MPG is particularly impressive and valuable.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2025 Audi Q4 45 e-tron is $650. This figure is based on driving 15,000 miles per year and using national average electricity prices. Remember that your actual costs may vary depending on your driving habits, local electricity rates, and where you charge. The actual annual cost could be significantly lower for drivers who charge at home during off-peak hours. The costs could be higher for drivers who rely exclusively on public charging due to variable pricing and potential fees. This $650 figure puts the Q4 45 e-tron in a class of its own regarding running costs.

Real-world expectations

While the EPA’s figures are a good starting point, real-world range and efficiency can vary based on several factors such as driving style, weather conditions (extreme cold or heat can impact battery performance), and cargo weight. Aggressive acceleration and high speeds will reduce range, while gentle, consistent driving will maximize it. Owners should also factor in battery degradation over time, which will gradually reduce the vehicle’s maximum range. Regular charging habits and avoiding fully depleting the battery can help slow this process. Many owners report achieving mileage figures close to the EPA estimates, but understanding the variables that can affect performance is critical.

How it compares

Compared to other electric SUVs in its class, the 2025 Audi Q4 45 e-tron holds its own in terms of efficiency. The Tesla Model Y Long Range, for example, achieves a combined rating of 122 MPGe. The Hyundai Ioniq 5 RWD Long Range boasts 114 MPGe. The Volvo XC40 Recharge sits around 92 MPGe. While the Audi Q4 45 e-tron’s 115 MPGe is lower than the Tesla Model Y, that higher fuel economy comes at a tradeoff; buyers choose the Q4 e-tron understanding that fuel saving comes at less cost and a tradeoff in maximum range. These differences matter to buyers prioritizing specific features and driving styles beyond raw fuel economy.

Tips to maximize efficiency

Take advantage of regenerative braking settings. The Q4 45 e-tron has adjustable regenerative braking levels, allowing you to tailor the amount of energy recaptured during deceleration. Experiment with different settings to find the one that best suits your driving style, maximizing efficiency without compromising comfort.

Precondition the battery. In cold weather, preconditioning the battery while plugged in can improve range. The car will warm the battery using grid power, rather than drawing from the battery itself, preserving range for your journey.

Monitor your tire pressure regularly. Properly inflated tires reduce rolling resistance, improving overall efficiency. Check your tire pressure regularly and inflate them to the recommended level specified on the doorjamb sticker.

Optimize your driving style. Gentle acceleration, consistent speeds, and avoiding hard braking will all help maximize range. Anticipate traffic flow and plan your routes to minimize stop-and-go driving.

Limit accessory usage. Using features like air conditioning and heating can draw significant power from the battery, so use these sparingly, especially on shorter routes. Smart use of seat heaters are effective at keeping people warm in cooler weather.

For more information, explore all Audi fuel economy data and into Q4 MPG across all years.