27 MPG combined is respectable for the 2024 Audi A5 Cabriolet quattro 2.0L. Nobody buys a sporty, all-wheel-drive convertible expecting hybrid-like efficiency. This is a car for enjoying a top-down cruise on a winding road, not hypermiling to save a few bucks at the pump. That 27 MPG figure represents a responsible indulgence, fitting for a buyer who appreciates performance and luxury without completely disregarding lower fuel costs.

City and highway performance

The EPA estimates suggest a balanced performance across different driving environments. The city MPG is rated at 24, reflecting the inherent fuel consumption of stop-and-go traffic. The automatic (AM-S7) transmission in the A5 Cabriolet works to mitigate this somewhat, offering smooth shifts and relatively quick reactions to throttle inputs. On the highway, the A5 Cabriolet truly shines, achieving a more frugal 33 MPG. This showcases the engine’s efficiency at steady speeds, making longer journeys surprisingly economical. This split might be a key selling point for owners who frequently commute or undertake weekend getaways, which aligns well with the car’s intended role as a stylish and practical open-top tourer.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2024 Audi A5 Cabriolet quattro, powered by the 2.0L 4-cylinder engine, is estimated at $2,150. This figure is based on driving 15,000 miles per year and using the EPA’s projected national average fuel prices. Your actual fuel costs will vary depending on your driving habits, fuel prices in your area, and the grade of gasoline you choose to use. While this isn’t the cheapest car to fuel, it’s a reasonable figure that reflects the car’s performance and features. Compare this figure against other vehicles in this class before deciding on a purchase.

Real-world expectations

While the EPA estimates provide a useful benchmark, real-world fuel economy often deviates based on various factors. Aggressive driving, frequent acceleration, and heavy use of air conditioning can all negatively impact the A5 Cabriolet’s MPG. Conversely, smooth, consistent driving with minimal hard acceleration will likely bring you close to, or even slightly above, the EPA’s stated figures. Elevation changes can also play a role, especially in mountainous regions. If you live in an area with significant inclines, expect to see slightly lower fuel economy numbers than the EPA suggests. The A5 Cabriolet’s all-wheel-drive system, while enhancing grip and stability, also adds some weight and drivetrain loss, which can slightly reduce fuel efficiency compared to a front-wheel-drive model.

How it compares

The BMW 430i Convertible, another popular choice in this segment, offers similar performance but may have slightly different fuel economy numbers. The 430i RWD is rated for 25 MPG combined, a little less than the A5’s 27. Stepping up to the M440i xDrive convertible will noticeably decrease your fuel mileage. The Mercedes-Benz C300 Cabriolet, another direct competitor, achieves an EPA-estimated 28 MPG combined. These differences, while relatively small, can influence a buyer’s decision, especially when viewed over years of ownership. See all Audi fuel economy data here. For a broader view, consider A5 MPG across all years. These cars represent a market of people seeking luxury first and fuel economy somewhere further down the list of requirements.

Tips to maximize efficiency

Ensure your tires are properly inflated. The correct tire pressure, typically found on a sticker inside the driver’s side doorjamb, optimizes rolling resistance and improves fuel economy. Regularly check your tire pressure, especially as temperatures change, to maintain optimal performance. Underinflated tires can significantly reduce MPG.

Avoid aggressive acceleration and braking. The 2.0L turbo engine in the A5 Cabriolet is responsive, but using its full power too often will quickly deplete your fuel tank. Drive smoothly, anticipate traffic flow, and accelerate gradually to maximize efficiency. Maintaining a steady speed is better than constant changes in velocity.

Minimize idling. If you’re stopped for more than a minute, turn off the engine. Excessive idling consumes fuel without covering any distance. This is especially important in urban environments, where traffic lights and congestion can lead to prolonged periods of idling. The A5 Cabriolet does not offer auto stop/start, so remember to manually turn off and turn back on the engine.

Reduce excess weight. Carrying unnecessary items in the trunk adds weight, which requires the engine to work harder and consume more fuel. Remove any unnecessary items from your car to improve fuel economy. Even small weight reductions can make a noticeable difference over time.

Keep your car well-maintained. Regular maintenance, including oil changes, air filter replacements, and spark plug replacements, ensures that your engine is running at peak efficiency. A poorly maintained engine will consume more fuel and deliver less power.