Used 2021 BMW X3 for Sale near O Fallon, IL

## Summary - With 2,204 currently listed for sale on CarGurus and an **average price of $24,839.00**, 37.2% of 2021 BMW X3s for sale on CarGurus are rated as good or great deals. - **Favorably reviewed:** Owners rated the 2021 BMW X3 4.71 / 5 stars. - **81.2% of 2021 X3 models on CarGurus are accident free**. - The 2021 BMW X3 is a cornerstone of the luxury compact SUV market, offering a spacious interior, solid driving dynamics, and an array of technology features, along with enhanced safety features this model year. ## Why it stands out The 2021 BMW X3 distinguishes itself with a blend of comfort, performance, and advanced technology that appeals to modern buyers looking for a compact luxury SUV. This model features multiple powertrain options, including a four-cylinder turbocharged engine and a plug-in hybrid variant, catering to diverse tastes and efficiency needs. The spacious interior, coupled with a cargo capacity of up to 62.7 cubic feet, makes it a practical choice for families or those needing additional storage. The 2021 model benefits from increased standard safety features and tech improvements, bolstering its status as an engaging yet functional crossover. While some users indicated room for improvement in interior storage and available features compared to competitors, the overall performance and driving experience remain a significant draw. ## Other model years to consider - **[2024 BMW X3](https://www.cargurus.com/Cars/l-Used-2024-BMW-X3-c32998)** - Average price: $38,410.00 - Good/great deal percentage: 35.0% - User rating: 5 / 5 - Total listings: 3,973 - **[2022 BMW X3](https://www.cargurus.com/Cars/l-Used-2022-BMW-X3-c31567)** - Average price: $29,949.00 - Good/great deal percentage: 37.9% - User rating: 4.75 / 5 - Total listings: 3,026 - **[2018 BMW X3](https://www.cargurus.com/Cars/l-Used-2018-BMW-X3-c27082)** - Average price: $18,017.00 - Good/great deal percentage: 40.4% - User rating: 5 / 5 - Total listings: 2,143 This analysis is based on CarGurus' proprietary market data from February 9, 2026, CarGurus experts' opinions, and generative AI.