27 MPG combined is respectable for the 2019 Audi A5 Cabriolet quattro 2.0L 4-cyl, even somewhat surprising given its purpose. This isn’t primarily about efficiency, it’s about open-air enjoyment, all-weather confidence from its quattro all-wheel-drive system, and sporty performance. Buyers accept this fuel economy because they prioritize the driving experience and stylish image over squeezing every last mile from a gallon of premium fuel.

City and highway performance

The EPA estimates the A5 Cabriolet at 23 MPG in the city and 34 MPG on the highway. The car shines on the highway, proving that even with all-wheel drive and an emphasis on power delivery, efficient cruising is still possible. The city number reflects the reality of stop-and-go driving, where the added weight of the convertible top mechanism and the demands of the quattro system take their toll. The seven-speed S tronic dual-clutch automatic transmission plays an important role, offering quick shifts both for performance and efficiency.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2019 Audi A5 Cabriolet quattro is $2,150. This is based on driving 15,000 miles per year and assumes current national average fuel prices for premium gasoline, which is recommended for optimal performance. Your individual fuel costs may vary depending on your driving habits, local fuel prices, and how often you take advantage of the A5’s performance capabilities.

Real-world expectations

While the EPA estimates provide a useful baseline, real-world fuel economy can and often differs. Aggressive driving, frequent short trips, and extended idling can all lower your average MPG. Mindful driving habits and consistent highway journeys can push your fuel economy closer to, or even slightly above, the EPA’s highway estimate. The performance character of the A5 Cabriolet is tempting, so expect to see numbers closer to the combined figure if you frequently exploit the engine’s power.

How it compares

The A5’s fuel economy holds its own among luxury convertibles. The BMW 430i Convertible, also with a 2.0L turbo engine, delivers similar figures, around 26 MPG combined. The Mercedes-Benz C300 Cabriolet, another direct competitor, is also in the same ballpark. The Audi’s quattro all-wheel-drive system, standard on this model, adds a layer of all-weather capability that some competitors offer only as an option and impacts the fuel economy to some degree. For those considering other Audi options, all Audi fuel economy data shows the A5 sits in a sweet spot between larger, less efficient models and smaller, more economy-focused vehicles. For buyers prioritizing open-top driving over fuel savings, this compromise is often acceptable. You can view A5 MPG across all years to see how the fuel economy has evolved over time.

Tips to maximize efficiency

Minimize short trips, especially when the engine is cold. Cold starts are particularly fuel-intensive because the engine management system enriches the fuel mixture to aid starting and warm-up. Combining errands into a single trip allows the engine to reach its optimal operating temperature, improving efficiency.

Anticipate traffic flow and practice smooth acceleration and braking. The A5’s responsive engine is eager to accelerate, but resisting the urge to constantly dart in and out of traffic will significantly improve fuel consumption. Gentle acceleration and braking reduce wasted energy.

Ensure your tires are properly inflated to the recommended pressure. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Regularly check your tire pressure and maintain it at the optimal level, which can be found on a sticker inside the driver’s side doorjamb.

Avoid extended idling. Idling consumes fuel without covering any distance. If you anticipate waiting for more than a minute or two, turn off the engine. Modern engines are designed to restart quickly and efficiently, minimizing the fuel penalty of restarting.

Limit use of accessories like air conditioning and heated seats. These systems place an extra load on the engine, increasing fuel consumption. Use them when needed, and consider opening the top instead of running the A/C when weather permits.