2019 Audi S4 Reliability ReportKeepScore 82/100 · top failure points · buy or avoid
Quick Facts · 2019 Audi S4
- Outscores the 2020 Audi S4 by 4 points — one of the stronger nearby years to consider.
- The system most likely to surface first: cooling system (moderate severity).
- Has 1 NHTSA recall on record — the most notable involves the seats.
2019 Audi S4: Buy or Avoid?
The 2019 Audi S4 stands as a remarkably capable and generally reliable luxury sport sedan, offering a compelling blend of performance and sophistication. While not entirely without its quirks, particularly in the realm of cooling system components and some electrical nuances, its core mechanicals are robust. This vehicle represents an excellent buy for those seeking a premium driving experience without significant fear of chronic, debilitating failures, provided proper maintenance is adhered to.
The 2019 Audi S4 is a fantastic performance sedan that delivers on its promises. However, potential buyers must enter ownership with eyes wide open regarding the higher cost of parts and labor for any repairs, particularly around the known cooling system vulnerabilities. While the core mechanicals are strong, be pre…
Best Model Years
2019-2023 (B9.5 refresh in 2020 was mostly cosmetic for S4)
Years to Avoid
None stand out as significantly worse in this generation, but earlier B8/8.5 generations (2009-2016) had more prevalent carbon buildup and supercharger issues.
Biggest Strengths
- Robust ZF 8-speed transmission
- Strong and capable 3.0L TFSI engine
- High-quality interior and build integrity
2019 Audi S4 — Known Trouble Spots
The systems that tend to fail first on the 2019 Audi S4, with the typical mileage window when each becomes a concern. Detailed repair-cost ranges and exact what-to-check inspection notes are in the full report.
The water pump and thermostat housing, often integrated into one unit, are known weak points across many VWAG 3.0T engines, including the EA839 in the S4. Leaks or failures can lead to engine overheating if not addressed promptly.
While generally stable, some owners report occasional MMI system glitches, frozen screens, or sensor faults for advanced driver-assistance systems (ADAS). These are often software-related but can sometimes indicate a failing module or se…
Beyond the cooling system, some reports indicate PCV (Positive Crankcase Ventilation) valve issues or occasional oil leaks from gaskets/seals at higher mileages. Carbon buildup on intake valves is also an inherent characteristic of direc…
2019 Audi S4 Mileage Danger Zones
The mileage windows when the 2019 Audi S4 most commonly needs attention. Plan ahead, budget accordingly, and inspect before you cross each threshold.
Low Risk Zone
At this mileage, the car should be performing optimally. Focus on ensuring all factory maintenance, particularly oil changes, has been meticulously followed. It's too early for common mechanical failures.
Maintenance Zone
This is a critical service interval. Be prepared for a major service which may include spark plugs, air filters, and potentially a transmission fluid flush (if not previously done). Coolant system issues may start to emerge here.
Elevated Risk Zone
Beyond this point, expect a higher likelihood of age and wear-related component failures. This includes deeper engine issues like PCV valves, potential turbo issues (though rare), and more pronounced suspension wear. Carbon cleaning migh…
High Risk Zone
Ownership at this mileage requires a strong maintenance history and a significant repair fund. While the core engine and transmission are robust, many ancillary systems and long-term wear items will require attention, which can be costly…
2019 Audi S4 Ownership Cost Outlook
What it typically costs to keep the 2019 Audi S4 on the road. Full 5-year cost-of-ownership projection and major-failure-risk forecast are in the report.
Annual Maintenance
$600-900 (for scheduled services)
Moderate Repairs
$800-2,000 occasionally (e.g., water pump, major suspension component)
How Long Does the 2019 Audi S4 Last?
Focus on vehicles with comprehensive service records. While 60,000-80,000 miles is a sweet spot for value, be prepared for upcoming maintenance items and potential component wear. High mileage units require a significant repair fund.
What 2019 Audi S4 Owners Actually Say
What Owners Love
- Exceptional acceleration and power delivery from the 3.0T V6.
- Comfortable and supportive sport seats, ideal for long drives.
- High-quality interior materials and superb fit and finish.
- Standard Quattro all-wheel drive provides confident handling in all conditions.
Common Frustrations
- MMI infotainment system can occasionally be glitchy or slow to respond.
- Brake dust can be excessive, requiring frequent wheel cleaning.
- Fuel economy, while respectable for the power, can be disappointing with enthusiastic driving.
- High cost of OEM replacement parts and specialized labor for repairs.
Who Should Buy the 2019 Audi S4?
Best For
- Enthusiasts seeking a balanced blend of luxury, performance, and all-weather capability.
- Drivers who prioritize a high-quality interior and sophisticated driving dynamics.
- Individuals comfortable with higher maintenance and repair costs associated with luxury performance vehicles.
Not Ideal For
- Budget-conscious buyers who cannot absorb unexpected, expensive repairs.
- Those who neglect scheduled maintenance or defer repairs.
How the 2019 Audi S4 Compares to Rivals
The 2019 S4 holds its own very well against direct German competitors like the M340i and C43, often having a slight edge in powertrain durability thanks to the robust ZF transmission. However, it cannot match the bulletproof reputation of a Lexus.
More Reliable Than
- Mercedes-AMG C43 (generally more complex electrical, some engine issues)
- BMW M340i (while competitive, Audi's AWD system is often preferred for consistency)
Comparable To
- BMW M340i (in overall reliability and performance)
Safety Recalls on the 2019 Audi S4
1 recall on record from NHTSA. Check your VIN atnhtsa.gov to see if the repair was performed.
SEATS
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.
What breaks on the 2019 Audi S4?
Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.
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Audi S4 — Year-by-Year Comparison
Compare KeepScores across nearby years of the Audi S4. Click any year for its full report.
Competing 2019s Worth a Look
Similar class, similar year range — ranked by KeepScore.
Relevant Products for Your 2019 Audi S4
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Frequently Asked Questions
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