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Independent review & score by Carivo
| Engine | 3.0L 6-Cylinder |
|---|---|
| Transmission | Automatic (S8) |
| Drivetrain | All-Wheel Drive |
| Fuel Type | Premium |
| City / Hwy MPG | 20 / 28 MPG |
| Combined MPG | 23 MPG |
| Est. Annual Fuel Cost | $3,550 |
| CO₂ Emissions | 380 g/mi |
| Seating Capacity | 5 passengers |
| Body Style | Sedan |
| Base Price | $48,776–$63,500 |
Source: EPA FuelEconomy.gov & manufacturer data. Figures reflect base trim; actual specs vary by trim level.
With an overall Carivo score of 7.7/10, the 2021 Audi S4 earns a Recommended rating among the sedans we've scored. Its strongest dimension is Technology at 8.7/10, while Reliability at 6.7/10 is where it trails the competition most noticeably. It's a solid all-rounder that delivers across most dimensions without obvious deal-breakers.
Reliability and safety are the two dimensions that matter most for long-term ownership costs. We rate reliability at 6.7/10 — below the segment average in our scoring. Budget for potentially higher maintenance costs and check the recall record below before buying. On safety it earns 8.2/10: respectable, if not class-leading — several competitors bundle more driver-assist tech as standard. Check your trim's official ratings at nhtsa.gov.
The 8.6/10 performance score reflects a chassis and powertrain that punch above the segment norm — this is a sedan you choose partly for the drive itself. Technology scores 8.7/10 — one of the stronger tech packages in the segment. Expect a responsive infotainment system, broad smartphone integration, and a solid suite of driver-assistance features.
Priced from $48,776–$63,500, 22 MPG, seating 5, the Audi S4 sits in the premium tier of the sedan category. The value score of 6.9/10 is a red flag — comparable alternatives offer meaningfully more for the same outlay. Shop the segment before deciding. At 5 years old, it's worth checking whether a newer generation or refresh has addressed any weaker dimensions — compare it to the current model year before buying.
Bottom line: Think of the 2021 Audi S4 as the dependable pick rather than the exciting one. Its softer scores in value and reliability are the only real asterisks. Shoppers who value predictability over headlines will be well served.
Carivo scores are our own editorial assessment, informed by NHTSA safety and recall records, EPA fuel-economy figures, and manufacturer-published specifications. Scores are reviewed periodically and updated when new data becomes available. See our full methodology →
The 2021 Audi S4 ranks #428 of 1310 sedans in the Carivo database — better than 67% of the segment. Its 7.7/10 overall score is 0.2 points above the segment average of 7.5/10. Its $48,776 starting price is about 76% above the segment's median of $27,664.
Rankings are recalculated as new vehicles and scores are added. See the full Sedan ranking →
Smart-money pick: the 2018 Audi S4 scores 7.6/10 — within striking distance of the 2021's 7.7 — and starts roughly $5,000 lower. If you don't need the newest model year, that's money better spent on a higher trim or kept in your pocket.
| Year | Score | Starting price (MSRP when new) | |
|---|---|---|---|
| 2025 | 7.9/10 | $55,208 | Read review → |
| 2024 | 7.9/10 | $53,600 | Read review → |
| 2023 | 7.8/10 | $51,992 | Read review → |
| 2022 | 7.7/10 | $50,384 | Read review → |
| 2021 (this review) | 7.7/10 | $48,776 | |
| 2020 | 7.7/10 | $47,168 | Read review → |
| 2019 | 7.6/10 | $45,560 | Read review → |
| 2018 | 7.6/10 | $43,952 | Read review → |
| 2017 | 7.4/10 | $42,344 | Read review → |
| 2016 | 7.5/10 | $40,736 | Read review → |
| 2015 | 7.5/10 | $39,128 | Read review → |
The following recall campaigns have been filed with NHTSA for this model and year. Recall repairs are performed free of charge by franchised dealers; check your specific vehicle by VIN at nhtsa.gov/recalls.
| Seat belts / Rear/other / Retractor 05/08/2021 · 21V606000 | 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,… |
|---|---|
| Tires 26/01/2022 · 22V034000 | 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,… |
| Suspension / Rear / Axle / Non-powered axle assembly 26/04/2021 · 21V295000 | 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,… |
| Back over prevention / Display function 05/10/2022 · 22V742000 | 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… |
Source: NHTSA recall database, fetched at page build time.
Explore the full lineup of Audi models scored by Carivo — ranked by overall score across reliability, safety, value, performance, and technology.