Summary

• With 142 currently listed for sale and an average price of $23,854.00, 30.3% of 2018 Audi S4s for sale on CarGurus are rated as good or great deals.

• Favorably reviewed: Owners rated the 2018 Audi S4 4.67 / 5 stars.

• 67.6% of 2018 Audi S4 models on CarGurus are accident free.

Why it stands out

The 2018 Audi S4 is a standout in the performance sedan segment, offering a blend of luxury, power, and technology. With a 3.0-liter twin-scroll turbocharged V6 engine producing 354 horsepower, the S4 delivers an impressive driving experience, zipping from 0 to 60 mph in just 4.4 seconds. Standard Quattro all-wheel drive ensures optimal traction and handling in various driving conditions, allowing drivers to confidently tackle winding roads or inclement weather.

Audi also prioritizes comfort and elegance in the S4’s design, featuring a high-quality interior that is both functional and stylish. Technology is at the forefront with the inclusion of the advanced Virtual Cockpit and intuitive infotainment system. Despite its performance capabilities, the S4 maintains a level of practicality with rear seat space and cargo room that are competitive for its class.

While the S4 excels in many areas, it’s important to note that some buyers may find it somewhat less engaging to drive compared to rivals like the BMW M340i or Mercedes-AMG C43. Additionally, the vehicle's maintenance costs can be higher than those of its competitors. Nonetheless, for those seeking a refined, powerful sedan with all-wheel drive capability, the 2018 Audi S4 remains a compelling choice.

Other model years to consider

• 2019 Audi S4

  • Average price: $29,294.00
  • Good/great deal percentage: 30.2%
  • User rating: 4.67 / 5
  • Total listings: 162

• 2023 Audi S4

  • Average price: $43,608.00
  • Good/great deal percentage: 28.7%
  • Total listings: 122

This analysis is based on CarGurus' proprietary market data from March 23, 2026, CarGurus experts' opinions, and generative AI.