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2021 Audi A4 S line 45 TFSI quattro Premium

The 2021 Audi A4 S line 45 TFSI quattro Premium is a 261-hp 2.0-liter turbocharged with a 7-speed s tronic dual-clutch automatic and all-wheel drive. It starts at $40,900 MSRP.

It makes 261 horsepower at 5,000 rpm and 273 lb-ft of torque at 1600 rpm. EPA fuel-economy estimates are 24 mpg city and 31 mpg highway.

The A4 measures 187.5 inches long on a 111.0-inch wheelbase and has a curb weight of 3,726 lb.

Spec Value
Vehicle
Body TypeSedan
PowertrainGas
Price
MSRP$40,900
MSRP with Destination$41,945
Destination Charge$1,045
Engine
Engine TypeIntercooled Turbo Gas/Electric I-4 (12V MHEV)
Displacement2 L
Horsepower261 hp @ 5,000 rpm
Torque273 lb-ft @ 1600 rpm
Drivetrain
Drive TypeAll-Wheel Drive (quattro)
Transmission
Transmission7-Speed S tronic Dual-Clutch Automatic
Fuel Economy
City24 MPG
Highway31 MPG
Recommended FuelPremium Unleaded
Brakes
Front Brake Disc13.3 in
Rear Brake Disc13.0 in
Tires & Wheels
Wheels Front18x8.0
Wheels Rear18x8.0
Tires FrontP245/40HR18
Tires RearP245/40HR18
Dimensions & Weight
Length187.5 in
Width72.7 in
Height56.2 in
Wheelbase111 in
Curb Weight3,726 lbs

Safety & Recalls

NCAP safety ratings

Overall ★★★★★
Frontal crash ★★★★★
Side crash ★★★★★
Rollover ★★★★★ (9.9 % risk)
Tested variant: 2021 Audi A4 4 DR AWD

Recalls

4 recalls on file with NHTSA for the 2021 Audi A4. Not every recall applies to every trim or VIN — check yours at nhtsa.gov/recalls.

Oct 5, 2022 · BACK OVER PREVENTION:DISPLAY FUNCTION

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2021 Audi A8, RS7, RS6 Avant, RS5 Sportback, RS5 Coupe, Q8, Q7, Q5 Sportback, S4 Sedan, Q5, A7, A6, A6 Allroad, A5 Sportback, A5 Coupe, A5 Cabrioleet, A4 Sedan, A4 Allroad, E-Tron Sportback Quattro, SQ7, S5 Cabriolet, E-Tron Quattro, SQ8, SQ5 Sportback, SQ5, S8, S7, S6 Sedan, S5 Sportback, S5 Coupe, 2022 E-Tron GT, and 2021-2022 RSQ8 vehicles. Due to a software issue, a blank or black screen may be displayed instead of the rearview camera image when the vehicle is placed in reverse gear. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."

Consequence: A blank rearview camera display can reduce the driver's rear visibility, increasing the risk of a crash.

Remedy: Dealers will update the infotainment unit software, free of charge. Owner notification letters were mailed October 25, 2022. Owners may contact Audi's customer service at 1-800-253-2834. Volkswagen's number for this recall is 91DZ.

NHTSA campaign 22V742000

Jan 26, 2022 · TIRES

Volkswagen Group of America, Inc. (Audi) is recalling certain 2019-2021 Audi A5 Sportback, RS5 Coupe, RS5 Sportback, S5 Sportback, 2020-2021 A4 Allroad, A4 Sedan, A5 Cabriolet, A5 Coupe, A6 Allroad, A6 Sedan, A7, A8, Q5, S4 Sedan, S5 Coupe, S5 Cabriolet, S6 Sedan, S7, S8, SQ5, 2021 Q5 Sportback, Q7, Q8, RS6 Avant, RS7, RSQ8, SQ5 Sportback, SQ7, and SQ8 vehicles. The rear axle alignment may not have been inspected after the repairs for Recall 21V-295 (42L1) were performed.

Consequence: Rear axle misalignment may cause premature or uneven tire wear, increasing the risk of a crash.

Remedy: Dealers will inspect the rear axle, adjust the alignment as necessary, and replace any prematurely or unevenly worn tires, free of charge. Owner notification letters were mailed March 3, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 42L5.

NHTSA campaign 22V034000

Aug 5, 2021 · SEAT BELTS:REAR/OTHER:RETRACTOR

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2021 Volkswagen ID4, Audi A4 Allroad, A4 Sedan, A5 Cabriolet, A5 Coupe, A5 Sportback, A6 Allroad, A6 Sedan, A7, A8, E-Tron Quattro, E-Tron Sportback Quattro, Q3, Q5, Q5 Sportback, Q7, Q8, RS5 Sportback, RS5 Coupe, RS6 Avant, RS7, RSQ8, S4 Sedan, S5 Cabriolet, S5 Coupe, S5 Sportback, S6 Sedan, S7, S8, SQ5, SQ5 Sportback, SQ7, SQ8, and 2021-2022 S3 Sedan vehicles. The rear seat belt automatic locking retractors may deactivate early, which can prevent the child restraint system from securing properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."

Consequence: An unsecured child restraint system can increase the risk of injury during a crash.

Remedy: Dealers will inspect, and replace as necessary, the middle-rear seat belt assemblies, free of charge. Owner notification letters were mailed August 27, 2021. Owners may contact Volkswagen customer service at 1-800-893-5298 and Audi customer service at 1-800-253-2834. Volkswagen's numbers for this recall are 69CR (VW) and 69CS (Audi).

NHTSA campaign 21V606000

Apr 26, 2021 · SUSPENSION:REAR:AXLE:NON-POWERED AXLE ASSEMBLY

Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Q7, Q8, Q5 Sportback, SQ5 Sportback, RS6 Avant, RS7, RS Q8, 2020-2021 Audi S6 sedan, Q5, A8, S8, A7, A6 Allroad, A5 Cabriolet, A4 sedan, A4 Allroad, SQ5, S7, A6 sedan, S5 coupe, S4 sedan, S5 Cabriolet, A5 coupe, 2019-2021 RS5 coupe, A5 Sportback, S5 Sportback, RS5 Sportback vehicles. The lock nut on the trailing arm of the rear axle may break due to stress corrosion.

Consequence: A broken lock nut may misalign the rear axle, causing a loss of control and increasing the risk of a crash.

Remedy: Dealers will replace the lock nuts and, if necessary, the associated bolts, free of charge. Owner notification letters were mailed June 4, 2021. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 42L1.

NHTSA campaign 21V295000

11 owner complaints to NHTSA for the 2021 Audi A4

Owner Complaints

11 owner complaints filed with NHTSA for the 2021 Audi A4 (3 mention a crash, 1 an injury). See all on nhtsa.gov

Most-cited areas
Electrical System3
Unknown Or Other3
Forward Collision Avoidance2
Lane Departure2
Power Train2
Suspension2
A complaint can cite more than one area.
Most recent complaints
Oct 8, 2025 · Electrical System
“The instrument cluster has stop working. Have to monitore vehicle information, Mileage, service, Safty notifications and general vehicle information from the Audi app.”
Aug 31, 2025 · Tires
“Tires are original equipment. Only 19,000 miles on them. Was told all 4 tires have belt shifts and hop some. Suggested they should be replaced. These tires were great when new but you could tell from…”
Aug 16, 2025 · Power Train
“I am writing to report a persistent issue with my 2021 Audi A4, VIN [XXX] . I have been experiencing a noticeable vibration, humming, and shuddering sensation that occurs specifically when turning at…”
Aug 13, 2025 · Unknown Or Other, Lane Departure, Forward Collision Avoidance
“The instrument cluster has failed per the recall 90VC. Audi issued the recall for every model made in 2021 with the exception of the A3 and A4 and I believe this was a mistake as my instrument cluster…”
Aug 1, 2025 · Electrical System, Lane Departure, Forward Collision Avoidance
“I have a 2021 audi a4 that is also being affected by the instrument cluster failure/recall. My model , a4 was not included but I am experiencing the same failure and this was reported to the…”

Complaints are unverified reports submitted to NHTSA by owners. They cover the whole model year, not a specific trim, and a count alone doesn't show how common a problem is.

Source: US National Highway Traffic Safety Administration (nhtsa.gov), matched as 2021 AUDI A4. US-market vehicles only; data cached for up to 7 days.

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