26 MPG combined is good for the 2025 Audi A4 S line quattro with the 2.0L 4-cylinder engine. It’s not class-leading, but it shows the priorities of the A4 buyer: a mix of performance, all-weather capability, and refined styling. Those seeking the best gas mileage might look elsewhere, but for someone who wants a premium driving experience without completely giving up practicality, this A4 is a good balance.

City and highway performance

The EPA estimates the A4 S line quattro gets 23 MPG in the city and 32 MPG on the highway. This difference shows how flexible the engine is. The turbocharged 2.0L engine, with the responsive 7-speed automatic transmission (AM-S7), provides plenty of low-end torque for easy city driving. On the open road, the A4 cruises comfortably. The relatively tall gearing helps it achieve good highway mileage. The quattro all-wheel drive system adds some weight, but provides confident grip in different conditions. This is a key selling point for many A4 buyers who live in areas with bad weather. This capability means fuel economy is slightly lower compared to front-wheel drive cars.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2025 Audi A4 S line quattro at $2,250. This is based on driving 15,000 miles per year and using national average fuel prices. Your actual fuel costs may vary depending on your driving habits, the type of fuel you use, and local fuel prices. Driving aggressively, idling for a long time, and always using premium fuel (though not required, it’s often recommended for best performance) will increase your yearly fuel expenses.

Real-world expectations

The EPA estimates are a good starting point, but real-world fuel economy often differs. If you drive efficiently and conservatively, expect numbers close to the official numbers. If you often use the engine’s full power or spend a lot of time in stop-and-go traffic, your average MPG will likely be closer to the low 20s. How you drive and the weather play a big role. Keeping your tires properly inflated and keeping up with scheduled maintenance can also help your fuel economy.

How it compares

Competitors in the compact luxury sedan segment offer different fuel economy ratings. For example, the BMW 330i xDrive, another all-wheel-drive competitor, gets about 28 MPG combined. The Mercedes-Benz C 300 4MATIC is similar to the Audi with 26 MPG combined. The Acura TLX, with a larger engine in some versions, can get around 24 MPG combined in its base configuration with front-wheel drive. These small differences can add up over the life of the car. Smart shoppers often compare A4 MPG across all years to see how it has changed.

Tips to Maximize Efficiency

Use the Audi Drive Select system. Try the different driving modes, Comfort, Auto, Dynamic, and Individual, to find what works best for your driving and helps you save fuel. Comfort mode usually softens the throttle and changes shift points for best MPG.

Avoid accelerating fast and braking hard. The turbocharged engine delivers plenty of power. Accelerating gently will help you avoid wasting fuel. Anticipate traffic and drive at a steady speed whenever possible to reduce the need for sudden stops and starts, and remember that the quattro system, while improving grip, can slightly reduce fuel economy, so driving efficiently becomes even more important.

Make sure your tires are properly inflated. Underinflated tires increase rolling resistance, which hurts fuel economy. Check your tire pressure regularly and inflate them to the recommended pressure listed on the driver’s side doorjamb. Small changes to tire pressure can improve your gas mileage.

Remove extra weight from the car. The lighter the car, the less fuel it needs to accelerate and maintain speed. The A4 isn’t very heavy, but removing unnecessary items in the trunk can help improve fuel efficiency slightly.

Think about when to use the automatic start/stop system. It’s designed to save fuel in stop-and-go traffic, but it can sometimes be annoying; get to know the system and learn when it works best. If you don’t like how it feels, you can turn it off, but that will slightly reduce your overall fuel economy. If you want to see all Audi fuel economy data, we have that available.