Used 2021 Audi A4 for Sale near Rancho Cucamonga, CA

## Summary - With 306 currently listed for sale and an **average price of $21,744.00**, 30.4% of 2021 Audi A4s for sale on CarGurus are rated as good or great deals. - **Favorably reviewed:** Owners rated the 2021 Audi A4 4.8 / 5 stars. - **77.1% of 2021 A4 models on CarGurus are accident-free**. - The 2021 Audi A4 features a refined turbocharged engine delivering a blend of efficiency and performance, alongside state-of-the-art technology like the Audi Virtual Cockpit. ## Why it stands out The 2021 Audi A4 stands out in the competitive luxury compact sedan market with its impressive combination of performance, technology, and quality. With a user rating of 4.8 out of 5 stars, owners appreciate its engaging driving dynamics and sophisticated interior. The powerful turbocharged engine not only provides lively acceleration but also maintains commendable fuel efficiency, enhanced by the addition of a mild hybrid system. The A4's hallmark is its technology, with features like the Audi Virtual Cockpit transforming the driver experience by replacing traditional dials with a customizable digital display. Additionally, a focus on safety with standard features such as forward collision mitigation helps to solidify its appeal. While some might find the base engine a bit underwhelming in terms of performance, the overall package offers a compelling choice for buyers seeking a reliable and luxuriously appointed vehicle. ## Other model years to consider - **[2018 Audi A4](https://www.cargurus.com/Cars/l-Used-2018-Audi-A4-c26836)** - Average price: $15,656.00 - Good/great deal percentage: 36.4% - User rating: 4.67 / 5 - Total listings: 984 - **[2017 Audi A4](https://www.cargurus.com/Cars/l-Used-2017-Audi-A4-c25731)** - Average price: $13,733.00 - Good/great deal percentage: 36.7% - User rating: 4.57 / 5 - Total listings: 903 - **[2016 Audi A4](https://www.cargurus.com/Cars/l-Used-2016-Audi-A4-c24886)** - Average price: $11,945.00 - Good/great deal percentage: 36.0% - User rating: 4.8 / 5 - Total listings: 692 This analysis is based on CarGurus' proprietary market data from March 16, 2026, CarGurus experts' opinions, and generative AI.