Is the 2021 Audi A4 reliable?

There isn't enough NHTSA complaint data on file yet to give this model year a verdict.

What are the most common problems with the 2021 Audi A4?

The most-reported component is electrical system, accounting for 27% of complaints on file.

How many recalls does the 2021 Audi A4 have?

4 recalls on file for this model year.

2021 Audi A4

○ Not enough data

2021 Audi A4
RENDERED 2026-11-01T12:38:08.060Z

Only 11 complaints on file — too few for a fair verdict.

This verdict reflects complaint volume compared to this model's typical year. Recalls and safety issues below apply regardless of the verdict — always check them.

Only 11 complaints on file — too few for a fair verdict. The data below is complete but unranked.

How is this computed?

Complaints: 11
Recalls: 4
Investigations: 0
Top problem: —

Complaints per year

2021: 11 complaints

View as data table

Year	Complaints
1995	1
1996	89
1997	98
1998	258
1999	190
2000	96
2001	131
2002	181
2003	210
2004	189
2005	219
2006	295
2007	196
2008	175
2009	120
2010	64
2011	11
2012	19
2013	24
2014	32
2015	19
2016	11
2017	57
2018	45
2019	10
2020	128
2021	11
2022	6
2023	10
2024	2
2025	1

Known problem areas

Only 11 complaints on file for this model year — too few to rank by share. Raw counts only, below.

Electrical system

3 of 11 total reports mention: electrical system.

Vehicle speed control

2 of 11 total reports mention: vehicle speed control.

CRASHINJURY

Show complaint excerpts

The contact leased a 2021 Audi A4. The contact stated that the dealer had provided her with the vehicle rental while her vehicle was being repaired.

NHTSA ODI report, 2021-11-16

The contact owned a 2021 Audi A4. The contact stated that while driving at a low rate of speed through a parking lot, the vehicle independently accelerated and the brake pedal locked.

NHTSA ODI report, 2021-05-25

Also filed under Air bags

Suspension

2 of 11 total reports mention: suspension.

CRASHINJURY

Power train

2 of 11 total reports mention: power train.

Show complaint excerpts

The vehicle at 13,xxx miles on the high ways, and during stop & go traffic; vehicle begins to tremble, transmission and floor shakes, rpms are higher than normal, abnormal noises coming from engine (screeching), jerking on acceleration on the first...

NHTSA ODI report, 2025-04-01

Also filed under Engine

Lane departure

2 of 11 total reports mention: lane departure, most commonly citing blind spot detection.

Safety timeline

4 recalls · 0 investigations · oldest first

To check one car, enter its VIN on the NHTSA recall page. Check a VIN →

R

2021-06-04Suspension21V295000 Volkswagen Group of America, Inc.

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.

Check if this car was fixed →
R

2021-08-27Seat belts21V606000 Volkswagen Group of America, Inc.

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.

Check if this car was fixed →
R

2022-03-03Suspension, tires22V034000 Volkswagen Group of America, Inc.

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.

Check if this car was fixed →
R

2022-10-25Back over prevention22V742000 Volkswagen Group of America, Inc.

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.

Check if this car was fixed →

Buy-smart checklist

2021 Audi A4 — pre-purchase inspection

Inspect

Electrical system: 3 reports on file for this year.
Vehicle speed control: 2 reports on file for this year.
Suspension: 2 reports on file for this year.

Verify these recalls were completed

Recall 21V295000 · Suspension
Recall 21V606000 · Seat belts
Recall 22V034000 · Suspension, tires
Recall 22V742000 · Back over prevention

Other years of this model

See all years ranked →

Best years3 years

Worst years3 years

FAQ

Is the 2021 Audi A4 reliable?: There isn't enough NHTSA complaint data on file yet to give this model year a verdict.
What are the most common problems with the 2021 Audi A4?: The most-reported component is electrical system, accounting for 27% of complaints on file.
How many recalls does the 2021 Audi A4 have?: 4 recalls on file for this model year.

Data updated 2026-11-01 · Complaints are unverified owner reports filed with NHTSA, not independently verified defects. Methodology.