Used 2021 BMW 4 Series for Sale near Portland, ME

## Summary - With 618 currently listed for sale and an **average price of $32,191.00**, 34.1% of 2021 BMW 4 Series models for sale on CarGurus are rated as good or great deals. - **Favorably reviewed:** Owners rated the 2021 BMW 4 Series 4.3 / 5 stars. - **76.4% of 2021 4 Series models on CarGurus are accident free**. ## Why it stands out The 2021 BMW 4 Series makes a bold statement with its distinctive design and modern technology. This model has evolved from the previous iterations, offering enhanced luxury and performance. With two engine options – a 2.0-liter turbocharged four-cylinder in the 430i and a more powerful 3.0-liter inline-six in the M440i – the 4 Series caters to various driving preferences, providing a robust 255 to 382 horsepower depending on the variant. Notably, the design includes a massive new twin-kidney grille for better cooling, though opinions on its aesthetics may vary. The interior boasts an impressive tech suite with the BMW iDrive 7 infotainment system, providing high-quality graphics and user-friendly operation. While the driving dynamics deliver a composed ride, some reviewers noted that the transmission could delay response times. Safety features are plentiful, including lane-departure warning and automatic emergency braking, contributing to BMW's reputation for building secure vehicles. ## Other model years to consider - **[2024 BMW 4 Series](https://www.cargurus.com/Cars/l-Used-2024-BMW-4-Series-c32795)** - Average price: $44,917.00 - Good/great deal percentage: 34.2% - User rating: 5 / 5 - Total listings: 1,454 - **[2015 BMW 4 Series](https://www.cargurus.com/Cars/l-Used-2015-BMW-4-Series-c24401)** - Average price: $13,748.00 - Good/great deal percentage: 40.9% - User rating: 4.62 / 5 - Total listings: 928 - **[2018 BMW 4 Series](https://www.cargurus.com/Cars/l-Used-2018-BMW-4-Series-c26653)** - Average price: $17,372.00 - Good/great deal percentage: 36.8% - User rating: 4.66 / 5 - Total listings: 996 This analysis is based on CarGurus' proprietary market data from March 30, 2026, CarGurus experts' opinions, and generative AI.