21 MPG combined is what you get with the 2017 Audi S5 3.0L. This isn’t a car for hypermilers; it’s a performance coupe/sedan that prioritizes driving pleasure and style over fuel efficiency. The S5 appeals to someone who appreciates a finely crafted interior, a potent engine, and the surefootedness of Quattro all-wheel drive. They’re willing to accept average fuel economy in exchange for the S5’s blend of luxury and performance.

City and highway performance

The S5’s EPA ratings break down to 18 MPG in the city and 28 MPG on the highway. The city figure reflects stop-and-go traffic, where the engine spends more time idling or accelerating. The 28 MPG highway rating indicates the S5’s relaxed cruising ability. On long road trips, drivers can expect to see figures close to, or even slightly above, this number, especially when using cruise control and maintaining a consistent speed. The seven-speed S tronic dual-clutch transmission helps achieve these numbers, offering quick shifts for acceleration and efficient gear selection for highway driving.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 Audi S5 at $2,750. This calculation is based on driving 15,000 miles per year and using national average fuel prices. Your actual fuel costs may change depending on your driving habits, the type of fuel you use, and local fuel prices. Drivers who spend a lot of time in heavy traffic, or those with a heavier foot, can expect to spend more. Those who primarily drive on the highway, and drive conservatively, may spend less. To improve future fuel comsumption, review your all Audi fuel economy data.

Real-world expectations

While the EPA estimates provide a useful benchmark, real-world MPG for the S5 often lands slightly below the combined rating, especially for drivers who enjoy the car’s performance. Expect numbers in the high teens around town, and low-to-mid-twenties on mixed driving. Aggressive acceleration, frequent use of the sport modes, and extended idling will all hurt fuel economy. However, careful driving on the open road can yield good results, sometimes matching or exceeding the EPA highway figure.

How it compares

The S5’s 21 MPG combined rating positions it competitively, but it’s not the best in its class. The BMW 440i Gran Coupe, with its inline-six engine, manages 25 MPG combined, making it a more fuel-efficient option. The Infiniti Q60 Red Sport 400, while boasting more horsepower, gets around 22 MPG combined, a similar alternative. The Mercedes-AMG C43 Coupe achieves 22 MPG combined. For the S5 buyer, the choice isn’t solely based on MPG; it’s also about aesthetics, handling, interior quality, and brand, not to mention researching S5 MPG across all years.

Tips to maximize efficiency

Use Audi Drive Select. The S5 comes standard with Audi Drive Select, which lets you choose different driving modes. Select the “Comfort” or “Efficiency” mode for cruising and optimized fuel consumption. These modes adjust throttle response, shift points, and steering assist to promote economical driving.

Anticipate traffic flow. By looking ahead and anticipating traffic, you can minimize sudden acceleration and braking. Maintaining a consistent speed and avoiding unnecessary stops helps maximize fuel efficiency, especially with a performance-oriented engine.

Monitor your tire pressure. Underinflated tires increase rolling resistance, which hurts fuel economy. Regularly check your tire pressure and ensure it matches the recommended pressure listed on the driver’s side door jamb. Properly inflated tires improve fuel efficiency and enhance handling and tire life.

Keep up with scheduled maintenance. Regular maintenance, including oil changes, air filter replacements, and spark plug replacements, ensures that your engine runs efficiently. A well-maintained engine consumes less fuel and performs at its best. Follow the manufacturer’s recommended maintenance schedule to keep your S5 in good condition.

Lay off the boost. The S5’s supercharged V6 is fun, but frequent hard acceleration will impact fuel economy. While enjoying the car’s performance is part of owning it, be mindful of your driving habits and avoid excessive throttle. Save the full-throttle blasts for special occasions and drive smoothly in everyday situations.