28 MPG combined is a reasonable figure for the 2017 Audi A3 Cabriolet 2.0L 4-cyl, but nobody buys this car primarily for its fuel efficiency. This is a stylish, open-top cruiser aimed at urban professionals and empty-nesters who prioritize luxury, a connected driving experience, and the joy of top-down motoring. Fuel costs are a consideration, yes, but behind those other factors.

City and highway performance

The A3 Cabriolet’s EPA estimates break down to 25 MPG in the city and 34 MPG on the highway. The city figure reflects stop-and-go driving, where the 2.0L turbocharged engine works a bit harder to overcome its own weight and the inertia of frequent acceleration. However, the smooth-shifting seven-speed automatic transmission (AM-S7) helps to keep the engine in its optimal rev range, mitigating some of the fuel penalty. On the highway, the A3 Cabriolet settles into a more relaxed cruise.

The engine’s ample torque allows for effortless passing and merging, and the aerodynamic profile helps to reduce drag, contributing to the more favorable highway MPG. Drivers who frequently make longer trips will see fuel consumption closer to the EPA highway estimate.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 Audi A3 Cabriolet 2.0L 4-cyl at $1,550. This figure is based on driving 15,000 miles per year and using national average fuel prices. Individual fuel costs will vary depending on local fuel prices, driving habits, and the percentage of city versus highway miles driven. While some might see $1,550 as a significant expense, it’s important to view it within the context of the A3 Cabriolet’s target demographic. These buyers are often less sensitive to fluctuating gas prices and view the car as a lifestyle choice rather than purely a means of transportation.

Real-world expectations

While the EPA estimates provide a standardized benchmark, real-world MPG can deviate depending on several factors. Aggressive driving, including frequent hard acceleration and braking, will negatively impact fuel economy. Carrying extra weight in the vehicle or driving in hilly terrain will increase fuel consumption. Weather conditions also play a role; cold temperatures can reduce MPG, especially on shorter trips before the engine reaches its optimal operating temperature. However, drivers who adopt a smoother driving style and prioritize highway miles will likely achieve MPG figures closer to the EPA estimates, perhaps even exceeding them slightly.

How it compares

In the realm of compact luxury convertibles, the A3 Cabriolet’s fuel economy holds its own. The BMW 230i Convertible, for example, achieves a similar combined MPG of around 27 MPG with its 2.0L turbocharged engine, although its highway figure might be slightly lower. A Mercedes-Benz C300 Cabriolet, while more powerful, sees a combined MPG closer to 25 MPG, making the A3 the slightly more frugal choice for those who prioritize fuel efficiency. Across A3 MPG across all years, this model sits in the middle, but its competitors offer similar results in this class of vehicle. The Mini Cooper Convertible, while smaller and less luxurious, offers significantly better fuel economy at around 31 MPG combined, appealing to a different buyer altogether.

If fuel economy is your absolute top priority, you should check all Audi fuel economy data before making a final decision.

Tips to maximize efficiency

Take advantage of the Audi Drive Select system, if equipped, and choose the “Efficiency” mode. This setting optimizes the engine and transmission for maximum fuel economy by adjusting throttle response and shift points. While this mode might slightly reduce responsiveness, it can make a noticeable difference on longer drives.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tires regularly and inflate them to the recommended pressure listed on the driver’s side doorjamb.

Minimize idling. Letting the engine idle for extended periods, particularly in cold weather, wastes fuel. If you’re stopped for more than a minute, turn off the engine. The A3 Cabriolet’s start-stop system automatically shuts off the engine at traffic lights, further reducing idling and fuel consumption.

Reduce aerodynamic drag. Remove any unnecessary items from the car’s exterior, such as roof racks or bike carriers, that can increase wind resistance. Also, avoid driving at excessively high speeds, as aerodynamic drag increases exponentially with speed, significantly impacting fuel economy.

Gentle inputs on the accelerator pedal will also result in better fuel mileage. Avoid sudden bursts of acceleration that will consume fuel quickly. By being mindful of how you are driving you can save more fuel.