2020 Audi S4
Gas Compact car
The 2020 Audi S4 is sold in the U.S. as a gas compact car. The most efficient version, the S4, is EPA-rated at 23 mpg combined. NHTSA lists 3 recall campaigns for this model year, which gives it a Safety Signal grade of C. Owners have filed 16 complaints, most often about electrical system.
Specs & fuel economy (EPA)
| Configuration | Powertrain | Drive | Engine / motor | City | Hwy | Comb | Annual fuel* |
|---|---|---|---|---|---|---|---|
| S4 | Gas | AWD | 3.0L 6-cyl turbo | 20 | 27 | 23 | $3,350 |
*EPA estimate at 15,000 miles/year and EPA reference fuel/electricity prices. Source: fueleconomy.gov vehicle records.
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Recalls (3)
Suspension
highProblem: 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.
Risk: Rear axle misalignment may cause premature or uneven tire wear, increasing the risk of a crash.
Fix: 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.
Seats
highProblem: Volkswagen Group of America, Inc. (Audi) is recalling certain 2017-2020 A4 Allroad, A4 Sedan, 2018-2019 RS5 Coupe, 2019 RS5 Sportback, 2018-2020 A5 Cabriolet, A5 Coupe, A5 Sportback, S4 Sedan, S5 Cabriolet, S5 Coupe, and Audi S5 Sportback vehicles. The cable connecting the seat heater to the Passenger Occupant Detection System (PODS) may have a contact fault, causing the software to misdiagnose a malfunction and disable the passenger air bag.
Risk: A disabled passenger air bag increases the risk of injury in the event of a crash.
Fix: Dealers will replace the connecting cable and either the heating mat or entire seat cover, free of charge. Owner notification letters were mailed January 7, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 74E3. This recall is an expansion of Recall 19V-547 (74D9). Vehicles previously repaired under 19V-547 will need to return for the new remedy.
Suspension
highProblem: 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.
Risk: A broken lock nut may misalign the rear axle, causing a loss of control and increasing the risk of a crash.
Fix: 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.
Owner complaints
16 complaints filed
0 involved a crash, 0 a fire, 0 injuries, 0 deaths reported by owners.
Filed by year — 2024: 1 · 2025: 15
Most-cited components
- Electrical System — 14
- Back Over Prevention — 12
- Unknown Or Other — 5
- Visibility/Wiper — 1
- Forward Collision Avoidance — 1
Complaint counts are raw owner reports to NHTSA, not verified defects, and scale with how many were sold. Use them to spot patterns, not to rank.
Crash ratings
| Configuration | Overall | Frontal | Side | Rollover | Rollover risk |
|---|---|---|---|---|---|
| 4 DR AWD | not rated | not rated | not rated | ★★★★★ | 10% |
NHTSA New Car Assessment Program. Standard driver-assist: forward collision warning.
Other S4 model years
2025 S4
0 recalls · 0 complaints
A2024 S4
0 recalls · 0 complaints
A2023 S4
0 recalls · 0 complaints
A2022 S4
1 recalls · 1 complaints
C2021 S4
4 recalls · 2 complaints
A2019 S4
1 recalls · 2 complaints
B2018 S4
2 recalls · 7 complaints
A2016 S4
0 recalls · 0 complaints
Sources & method
Safety Signal starts every model-year at 100 and subtracts points per open NHTSA recall campaign by severity: critical 15 (fire risk, park-outside or do-not-drive advisories), high 8 (brakes, steering, airbags, loss of drive power, structure, battery), moderate 6, minor 3 (software, labels, lighting fixed by an update). Floor 35. A ≥ 90, B ≥ 80, C ≥ 70, D ≥ 60, otherwise F. Complaint counts and NHTSA crash ratings are shown separately and are not blended into the grade.
EPA figures come from fueleconomy.gov vehicle records (ids 42221). Recalls, complaints, investigations and crash ratings come from NHTSA's public flat files, refreshed weekly.