Summary

• With 52 currently listed for sale near Philadelphia, PA and an average price of $15,698.00, 32.7% of 2021 Audi A4s for sale on CarGurus are rated as good or great deals.

• Favorably reviewed: Owners rated the 2021 Audi A4 4.75 / 5 stars.

• 98.1% of 2021 A4 models on CarGurus are accident free.

Why it stands out

The 2021 Audi A4 stands out as a compact luxury sedan that blends strong technology, respectable efficiency, and a well-rounded driving character. By this point in its final generation, it offered two 2.0-liter turbocharged engines, and the 2021 model got a power bump along with a mild-hybrid drivetrain that delivered 261 hp and 273 lb-ft. That combination gives the A4 a more modern feel than many buyers expect from a used luxury sedan, while still keeping it appealing to shoppers who want a premium car without stepping into something larger or more expensive.

Technology is one of the A4’s biggest calling cards. The model’s Virtual Cockpit replaces the standard instrument cluster gauges with a fully digital display, and for 2021 the interior also benefited from an upgraded MMI system with a 10.1-inch touch screen. The A4’s standard equipment list is also notably generous for the class, with Apple CarPlay, Android Auto, leather seats, a sunroof, a rearview camera, and Audi’s Drive Select adjustable settings all included on the base Premium trim. Buyers looking for more traction can also appreciate that quattro all-wheel drive remained optional, which adds to the car’s appeal in poor weather.

There are still a few tradeoffs to keep in mind. The base engine was described as underwhelming, and the back seat is cramped. Even so, the 2021 Audi A4 remains attractive because it combines useful everyday comfort, strong available technology, and a premium badge with a reputation for being a good used-car value relative to its modern competition.

Other model years to consider

• 2018 Audi A4

  • Average price: $17,767.00
  • Good/great deal percentage: 37.8%
  • User rating: 5 / 5
  • Total listings: 119

• 2016 Audi A4

  • Average price: $13,238.00
  • Good/great deal percentage: 28.9%
  • User rating: 5 / 5
  • Total listings: 90

• 2022 Audi A4

  • Average price: $25,456.00
  • Good/great deal percentage: 44.6%
  • User rating: 5 / 5
  • Total listings: 83

This analysis is based on CarGurus' proprietary market data from August 11, 2026, CarGurus experts' opinions, and generative AI.