Audi · 2021
A5 Sportback S line quattro 2.0L 4-cyl
✓ EPA Verified
Premium Gasoline
Midsize Cars
All-Wheel Drive
City
24
MPG
Combined
27
MPG
Highway
31
MPG
Annual Fuel Cost
$2,150
Based on 15,000 miles/year · EPA estimates
Class Comparison — Midsize Cars
Bottom 49%
Better than 49 out of 100 vehicles in its class for fuel efficiency.
This vehicle: 27 MPG
This vehicle
27 MPG
Class average
35 MPG
Class lowest
13 MPG
EPA Energy & Environment Scores
6
Energy Score
Out of 10
6
GHG Score
Out of 10
331 lbs
Annual CO₂
g/mile tailpipe CO₂
Yes
Start-Stop
Auto stop-start
Vehicle Specifications
Engine2.0L 4-cyl
TransmissionAutomatic (AM-S7)
DriveAll-Wheel Drive
Fuel TypePremium Gasoline
Vehicle ClassMidsize Cars
TrimHybrid
Engine DescSIDI; Mild Hybrid
Start-StopYes
EPA Vehicle ID43252

The 2021 Audi A5 Sportback S line quattro achieves 27 MPG combined, a respectable figure for a car that emphasizes sleek design and sporty driving dynamics over pure fuel sipping. This isn’t a hybrid or an economy car. Instead, it’s a stylish and practical fastback with a turbocharged engine and all-wheel drive, made for drivers who value performance and style as much as efficiency. The A5 Sportback buyer isn’t only focused on saving every penny at the pump, but they still appreciate a reasonable return on their fuel investment.

city and highway performance

The A5 Sportback’s EPA ratings break down to 24 MPG in the city and 31 MPG on the highway. The city figure reflects stop-and-go traffic, where the car’s turbocharged engine and all-wheel-drive system work harder, impacting efficiency. The highway rating showcases the A5’s ability to cruise efficiently at higher speeds. The seven-speed S tronic dual-clutch transmission helps in both scenarios, providing quick and smooth shifts while also optimizing engine speed for fuel economy. Understanding these separate ratings is key. The A5 Sportback is more suited to longer commutes or highway driving where it can stretch a gallon of fuel further.

annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Audi A5 Sportback S line quattro at $2,150. This is based on driving 15,000 miles per year and using national average fuel prices. Note that this is just an estimate, and your actual fuel costs will vary depending on your driving habits, the type of fuel you use, and local fuel prices. Aggressive driving, frequent short trips, and the use of premium fuel can all increase your annual fuel expenses beyond the EPA’s estimate.

real-world expectations

While the EPA figures provide a standardized benchmark, real-world MPG can vary. Many owners report achieving figures close to the EPA estimates, particularly on longer trips. However, expect lower numbers in heavy city traffic or if you frequently engage the car’s sporty driving modes. The turbocharged engine is responsive and encourages spirited driving, which inevitably takes a toll on fuel consumption. Being mindful of driving habits can help owners align their fuel economy with the official ratings.

how it compares

Compared to its competitors, the 2021 A5 Sportback’s fuel economy is competitive but not class-leading. The BMW 430i Gran Coupe, another stylish four-door coupe, achieves a similar combined MPG, around 28 MPG. The Mercedes-Benz C300 sedan, a more traditional luxury option, also hovers around 25 MPG combined. Where the A5 edges out some rivals is with its Quattro all-wheel drive system, a feature that often comes at the expense of fuel economy in other vehicles, as you can see from all Audi fuel economy data. The fuel economy differences between these cars aren’t massive, and purchase decisions are often based more on brand preference, styling, and features than on a few miles per gallon.

tips to maximize efficiency

Avoid aggressive acceleration and braking. The A5 Sportback’s turbocharged engine delivers ample power, but heavy acceleration burns fuel quickly. Gentle acceleration and anticipating traffic conditions can make a significant difference in fuel consumption over time.

Take advantage of the car’s driving modes. The A5 Sportback offers various driving modes, including an “Efficiency” mode designed to optimize fuel economy. Select this mode when possible, especially during highway cruising or in stop-and-go traffic. While it may slightly dampen throttle response, the fuel savings can be worthwhile.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, which reduces fuel efficiency. Check your tire pressure regularly and inflate them to the recommended levels, which are typically listed on a sticker inside the driver’s side doorjamb.

Minimize unnecessary weight. Carrying extra weight in your car also reduces fuel economy. Remove any unnecessary items from your trunk and back seat to lighten the load and improve fuel efficiency. The A5’s cargo capacity is already generous, so avoid using it as a storage unit.

Consider the A5 MPG across all years. While this article discusses the 2021 model, reviewing A5 MPG across all years could provide valuable perspective for anyone cross-shopping model years and assessing long-term ownership costs related to fuel consumption.