The 2020 Audi A3 Cabriolet quattro 2.0L 4-cyl’s combined fuel economy rating of 25 MPG isn’t going to win any awards for efficiency, but it’s a figure largely accepted by its target demographic. This isn’t a car primarily purchased for low fuel consumption. Instead, A3 Cabriolet buyers are drawn to its stylish open-top design, compact dimensions, and the secure feeling afforded by its quattro all-wheel-drive system. Fuel economy is a secondary consideration, a price they’re willing to pay for the overall package.

City and highway performance

The EPA estimates of 22 MPG in the city and 30 MPG on the highway provide a more nuanced picture of the A3 Cabriolet quattro’s fuel consumption. The city figure reflects the reality of stop-and-go traffic, where the engine has to work harder to accelerate the car’s roughly 3,500-pound curb weight. The highway MPG, however, suggests that the 2.0L turbocharged engine, coupled with the seven-speed automatic transmission (AM-S7), can achieve respectable efficiency when cruising at a constant speed. Those living in more congested urban environments will naturally see a less favorable average than those who regularly embark on longer highway journeys.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2020 Audi A3 Cabriolet quattro 2.0L 4-cyl at $1,750. This figure is based on driving 15,000 miles per year, using fuel prices that reflect the national average. Individual costs may vary depending on driving habits, fuel prices in your region, and the type of fuel used. Premium fuel is recommended for optimal performance, which will increase your expenses compared to models that accept regular grade gasoline. If you drive significantly more or less than 15,000 miles, you can adjust the $1,750 figure accordingly to get a more accurate estimate for your own situation.

Real-world expectations

While the EPA estimates provide a useful benchmark, it’s important to understand that real-world fuel economy can differ. Factors such as driving style (aggressive acceleration and braking will reduce fuel efficiency), road conditions (hills and headwinds), and even tire pressure can all impact the MPG you actually achieve. The quattro all-wheel-drive system, while providing enhanced traction and stability, also adds weight and complexity, which can slightly decrease fuel economy compared to a front-wheel-drive version of the A3. Expect to see numbers that hover around the EPA estimates but be prepared for some variation depending on your specific driving circumstances. Owners on online forums have reported a range of 22-28 MPG in mixed driving conditions, so aiming for something in that ballpark is realistic.

How it compares

The 2020 A3 Cabriolet quattro’s fuel economy stacks up fairly against its rivals, but some alternatives offer a slight edge. For example, the BMW 230i Convertible, although rear-wheel drive, boasts around 28 MPG combined. The Mercedes-Benz C300 Cabriolet, with its rear-wheel drive configuration, achieves a similar combined figure of 25 MPG, but can reach nearly 32 MPG on the highway. For A3 Cabriolet buyers, the allure of quattro all-wheel drive likely justifies the marginal difference in fuel consumption, especially those residing in regions with inclement weather. For those prioritizing open-top motoring over all-wheel drive traction, the BMW and Mercedes-Benz options may present slightly more economical alternatives.

You can compare this to A3 MPG across all years or browse all Audi fuel economy data for more information.

Tips to maximize efficiency

Gentle acceleration and smooth braking are your best friends when trying to improve fuel economy in the A3 Cabriolet quattro. Avoid aggressive starts from stoplights and anticipate traffic flow to minimize hard braking. The turbocharged engine responds well to a light foot on the accelerator, so try to maintain a steady speed and avoid unnecessary bursts of power.

Regular maintenance, including tire pressure checks and oil changes, is critical for good fuel efficiency. Underinflated tires create more rolling resistance, which forces the engine to work harder. Following the recommended maintenance schedule will ensure that the engine is running smoothly and efficiently.

Minimize unnecessary weight in the vehicle. Carrying extra cargo in the trunk can negatively impact fuel economy, so remove any items you don’t need on a regular basis. Even small weight reductions can add up over time and contribute to improved MPG.

Use the car’s drive mode select feature wisely. If equipped, choosing the “Efficiency” or “Eco” mode will optimize various vehicle settings for fuel economy, such as throttle response and shift points. While you sacrifice some performance, the trade-off can be worthwhile if your primary goal is to save fuel.