By Andy Bornhop
Updated January 30, 2025
The Audi A5 and S5 models were majorly refreshed last year, so 2021 is a relatively quiet year for this stylish coupe, convertible, and 5-door hatch. With one big exception: All 2021 Audi A5 models now have a new 12-volt mild-hybrid powertrain that adds 13 horsepower via the alternator belt.
That means the turbocharged 2.0-liter 4-cylinder engine in the base model (the A5 Sportback 40 TFSI quattro) now puts out 201 horsepower and the same 236 lb-ft of torque as last year. In the A5 45 TFSI quattro models, the engine now puts out 261 horsepower and 273 lb-ft of torque. Performance of these 4-cylinder A5s should be a little better, and even though EPA fuel economy for the 2021 A5 has not been announced, we could see a slight improvement in that area as well.
For 2021, Audi brings additional technology and driver assistance features to the A5 and S5 lineup, in addition to streamlined packages. Although the A5/S5 is based on the platform of the compact A4 sedan, it’s available as an attractive coupe, an open-air Cabriolet, and a sleek 5-door hatchback model called the Sportback.
On 2-door versions, the A5’s rear seat is pretty much an afterthought, as can be said of the BMW 4 Series, Lexus RC, and Mercedes-Benz C-Class coupe. Trunk space isn’t much better, but it’s superior to that of rivals from Lexus, Jaguar, and Infiniti. If you need room for family or friends but still want something low and sinister, the A5/S5 Sportback is a great solution.
Quattro is standard on the A5 and S5. This all-wheel-drive system goes almost unnoticeable in daily driving, but the stability it provides in wet, muddy, or snowy conditions is much appreciated.
2021 Audi A5 pricing starts at $26,349 for the A5 Premium Sedan 4D, which had a starting MSRP of $44,645 when new. The range-topping 2021 A5 Prestige Cabriolet 2D starts at $36,539 today, originally priced from $62,195.
Original MSRP | KBB Fair Purchase Price (national avg.) | |||
---|---|---|---|---|
$44,645 | $26,349 | |||
$46,845 | $26,411 | |||
$47,745 | $28,240 | |||
$49,945 | $28,003 | |||
$51,445 | $29,377 | |||
$53,445 | $29,520 | |||
$54,495 | $30,469 | |||
$56,345 | $34,475 | |||
$62,195 | $36,539 |
The Kelley Blue Book Fair Purchase Price for any individual used vehicle can vary greatly according to mileage, condition, location, and other factors. The prices here reflect what buyers are currently paying for used 2021 Audi A5 models in typical condition when purchasing from a dealership. These prices are updated weekly.
Which Model is Right for Me?
2021 Audi A5 Premium
Panoramic sunroof
Leather seating
Automatic emergency braking
10.1-inch touchscreen
Lane-departure warning
2021 Audi A5 Premium Plus
Audi Virtual Cockpit
Adaptive cruise control
Blind-spot monitor
Top-view camera
Rear cross-traffic alert
2021 Audi A5 Prestige
Matrix headlights
Navigation
Bang & Olufsen audio
Head-up display
Heated rear seats
2021 Audi A5 Cabriolet adds
Power retractable soft top
Available neck warmers
2021 Audi S5 adds
3.0-liter twin-scroll turbocharged V6
8-speed automatic transmission
Sport suspension
12-way-power sport front seats
The 2021 Audi A5 and Audi S5 are more than just beautiful designs. With their luxury features, powerful engines, and standard quattro all-wheel drive, they drive like no other cars in this class. While the A5 coupe’s 2.0-liter turbocharged 4-cylinder engine is more than capable, folks desiring more power should opt for the S5 and its twin-turbocharged 3.0-liter V6 with 349 horsepower.
Audi’s drive-mode system lets the driver adjust steering and throttle response, but there’s an Auto mode that lets the car’s brain make all the hard decisions. And it does a good job. While sometimes there’s a bit of turbo lag associated with the 4-cylinder engines, the A5 quickly gets up to speed.
No manual transmission is available in the Audi A5 and S5. However, the 7-speed dual-clutch automatic in the A5 is one of the best in the business, shifting smoothly and quickly. The conventional 8-speed in the S5 models works similarly well.
The A5/S5 lineup received an interior makeover last year, highlighted by a 10.1-inch touchscreen on top of the center stack that serves as the focal point for navigation, audio, and in-vehicle data. It’s as elegant as ever inside the A5, and the touchscreen or voice commands can be used to accomplish tasks.
New for 2021 is wireless Apple CarPlay and Audi’s integrated toll module (ITM), a transponder built into the rearview mirror. Audi says ITM functions on compatible toll roads in the U.S. and parts of Canada.
On A5 and S5 coupes, the S line interior package brings with it a flat-bottom steering wheel, leather and Alcantara seats, and brushed-aluminum inlays. It’s a beautifully designed cabin that impresses with its minimal clutter and high-quality materials.
It’s easy to find a comfortable driving position in this compact Audi, and the front seats offer excellent lateral support. As stated earlier, the rear seat of the coupe and convertible is tight on space, but the A5 and S5 Sportback is as roomy as an A4 sedan in back, with 21 cubic feet of cargo space with the seat up or 35 when it’s folded.
The 2021 Audi A5 is handsome but in a conservative way. We particularly like the A5 Sportback, which is essentially a smaller version of the A7. In other words, it’s a 4-door car with a coupe-like silhouette and a power liftgate that rises to reveal a healthy rear cargo bay. New for 2021: If you order an A5 or an S5 with the optional Black Optic package, your car will be available with a black-painted roof.
VIRTUAL COCKPIT
If you like high-tech toys, you’re going to love the A5’s available Virtual Cockpit. Using a 12.3-inch TFT (thin-film transistor) screen, Audi replaces the traditional analog gauge cluster with a virtual one allowing for various configurations including a 3D navigation display powered by Google Earth graphics.
A5 SPORTBACK
The A5 Sportback offers all the style and performance of the A5 coupe, but with SUV-like cargo room thanks to the massive hatchback design. Despite its sloping roof, there’s enough room in the back seat for 6-footers, and the seats fold down to increase overall cargo volume to 35 cubic feet.
All A5s come in three trims: Premium, Premium Plus, and Prestige. Base models have the mild-hybrid 4-cylinder powertrain and lane-keeping assist, as well as 18-inch wheels, a leather interior with heated front sport seats, tri-zone automatic climate control, and LED headlights.
The basic infotainment system is good, a 10-speaker unit with two USB ports and wireless Apple CarPlay/Android Auto compatibility.
A5 and S5 Coupes come with a panoramic sunroof while the soft-top Cabriolet versions get a power-operated fabric roof. All versions also come with automatic emergency braking and a system that cinches the seatbelts and shuts the side windows for extra safety if a potential collision is sensed.
We think the mid-trim Premium Plus A5 is worth the extra money as it adds adaptive cruise control and a blind-spot monitor with rear cross-traffic alert, and will even alert you of a coming vehicle when exiting the A5. Also included are Virtual Cockpit, front and rear parking sensors, and a hands-free trunk/tailgate release.
The Prestige trims add navigation, a 19-speaker Bang & Olufsen audio, and a head-up display.
Powering the new 2021 Audi A5 Sportback 40 TFSI quattro model is a 2.0-liter turbocharged 4-cylinder engine good for 201 horsepower and 235 lb-ft of torque. A new 12-volt mild-hybrid arrangement contributes 13 horsepower via the alternator belt.
The 2021 Audi A5 45 TFSI quattro has a stronger version of the mild-hybrid powertrain, one that pumps out 261 horsepower and 273 lb-ft of torque, again aided by the alternator-driven mild-hybrid system. With the 4-cylinder engines, you get one gearbox: a 7-speed dual-clutch automatic.
In the S5 lineup, you get a 3.0-liter V6 producing 349 horsepower and 369 lb-ft of torque, courtesy of a twin-scroll turbocharger but no hybrid assistance. The S5s employ an 8-speed Tiptronic automatic transmission that can handle the extra torque.
2.0-liter turbocharged inline-4 (A5 Sportback 40 TFSI quattro)
201 horsepower @ 4,200-6,000 rpm
236 lb-ft of torque @ 1,450-4,200 rpm
EPA city/highway fuel economy: 25/34 mpg
2.0-liter turbocharged inline-4 (A5 45 TFSI quattro)
261 horsepower @ 5,000-6,000 rpm
273 lb-ft of torque @ 1,600-4,500 rpm
EPA city/highway fuel economy: 24/31 mpg (Sportback & Coupe), 23 mpg/31 mpg (Cabriolet)
3.0-liter twin-turbocharged V6 (S5)
349 horsepower @ 5,400-6,400 rpm
369 lb-ft of torque @ 1,370-4,500 rpm
EPA city/highway fuel economy: 20/28 mpg (S5 Sportback & S5 Coupe), 20/26 mpg (S5 Cabriolet)
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Year | Vehicle Depreciation* | Resale Value | Trade-In Value | ||
---|---|---|---|---|---|
2022 | - | $41,258 | $37,005 | ||
2023 | $7,674 | $33,584 | $29,442 | ||
2024 | $6,962 | $26,622 | $22,722 | ||
Now | $2,727 | $23,895 | $20,380 |
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2-Year Forecasted Depreciation
*Depreciation for the last 12 months of the private party resale value.
Annual Depreciation is an estimation of what your vehicle's value might be over time based on an average of similar vehicles. Estimations are calculated by comparing Kelley Blue Book Private Party Values of vehicles similar to yours over time, as well as forecasts from Manheim Auction data comparing current and projected auction values against current Kelley Blue Book Private Party and Trade-In Values. This is not a guarantee of actual depreciation. Local weather conditions, market factors and driver performance will also impact your vehicle's actual depreciation.
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Curb Weight | 3759 lbs. | ||
---|---|---|---|
Fuel Capacity | 15.3 gallons | ||
Front Head Room | 37.7 inches | ||
Front Leg Room | 41.3 inches | ||
Max Seating Capacity | 5 | ||
Overall Length | 187.2 inches | ||
Front Shoulder Room | 55.7 inches | ||
Trunk or Cargo Capacity | 21.8 cu.ft. | ||
Turning Diameter | 38.4 feet | ||
Wheel Base | 111.2 inches | ||
Width with mirrors | 79.9 inches |
Alloy Wheels | Available | ||
---|---|---|---|
Number of Doors | 4 doors | ||
LED Headlights | Available | ||
Rear Spoiler | Available |
City | 25 mpg | ||
---|---|---|---|
Highway | 34 mpg | ||
Combined | 28 mpg |
Drivetrain | AWD | ||
---|---|---|---|
Transmission Type | Automatic | ||
7 speed | Available | ||
Recommended Fuel | Premium | ||
Dual-Clutch Automatic Transmission | Available |
Horsepower | 201 hp | ||
---|---|---|---|
Torque | 236 foot pounds | ||
Engine | 4-Cyl, Turbo, 2.0 Liter | ||
0 to 60 | 6.4 seconds | ||
Top Speed | 130 mph |
Basic | 4 years / 50000 miles | ||
---|---|---|---|
Powertrain | 4 years / 50000 miles | ||
Corrosion | 12 years / Unlimited miles |
Audi Pre Sense City
Pre Sense City alerts the driver if a potential collision with another vehicle or pedestrian has been sensed. This standard system brings the A5 to a complete stop if the driver doesn’t react.
Audi Driver Assistance Package
Standard on the Premium Plus and Prestige trims, the system adds adaptive cruise control with a stop/go feature, plus lane-keeping assist and Audi Traffic Jam Assist.
Audi Side Assist with Pre Sense Rear
Side Assist, part of the Convenience Package, lets you know if there’s a vehicle in the A4’s rear three-quarter blind spot, so lane changes are much safer. Pre Sense Rear automatically cinches the seatbelts and closes the windows and sunroof when a possible rear-end collision is sensed.
Used 2021 Audi A5 | New 2024 Audi A5 | Used 2021 Mercedes-Benz A-Class | Used 2021 Acura ILX | ||
---|---|---|---|---|---|
Price | $26,349 | $47,295 | $22,849 | $26,617 | |
KBB.com Rating | 4.6 | 4.3 | 4.8 | 4.2 | |
Consumer Rating | 4.1 | 4.1 | 4.2 | 4.3 | |
Fuel Economy | City 25/Hwy 34/Comb 28 MPG | City 26/Hwy 35/Comb 30 MPG | City 25/Hwy 36/Comb 29 MPG | City 24/Hwy 34/Comb 28 MPG | |
Fuel Type | Gas | Gas | N/A | N/A | |
5 Year Cost To Own 5-Year Cost to Own includes out of pocket expenses like fuel and insurance, plus the car’s loss in value over time (depreciation). | N/A | $72,925 | N/A | N/A | |
Safety Rating | 5.0 | 5.0 | N/A | 5.0 | |
Seating Capacity | 5 | 5 | 5 | 5 | |
Basic Warranty | 4 years or 50000 miles | 4 years or 50000 miles | 4 years or 50000 miles | 4 years or 50000 miles | |
Horsepower | 201 HP | 201 HP | 188 @ 5500 RPM | 201 @ 6800 RPM | |
Engine | 4-Cyl, Turbo, 2.0 Liter | 4-Cyl, Turbo, 2.0 Liter | 4-Cyl, Turbo, 2.0 Liter | 4-Cyl, i-VTEC, 2.4 Liter | |
Drivetrain | AWD | AWD | FWD | FWD |
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Yes, the 2021 Audi A5 is a good car, as reflected by its above-average Kelley Blue Book rating of 4.6 out of 5.
2021 Audi A5 city/highway fuel economy ratings range from 23/31 mpg to 25/34 mpg, depending on trim and equipment.
Used 2021 Audi A5 prices currently range from $26,349 for the Premium Sedan 4D to $36,539 for the Prestige Cabriolet 2D when purchasing from a dealership, depending on a range of factors like equipment, mileage, and condition.
The cheapest 2021 Audi A5 is the Premium Sedan 4D, with a Kelley Blue Book Fair Purchase Price of $26,349.
The 2021 Audi A5 is part of the 2nd-generation A5, which our owners give an above-average reliability rating of 4.3 out of 5.