How much does the 2021 BMW 4 Series cost?

Prices have softened 4.45% compared to this time last year, making it a favorable time to shop this model year.

There are 626 listings available, which suggests you should have a reasonable amount of inventory to compare.

If you find a listing below $32,036.09, that's toward the low end of the year-round range and worth acting on quickly.

Is the 2021 BMW 4 Series a good car?

Yes — the 2021 BMW 4 Series earns a 5/5 user rating and a 6.83/10 expert rating. The standout strength is Technology at 9/10.

It is aimed at you if you want a premium two-door that feels modern and distinctive, and it is offered as both a coupe and a convertible. The model also leans heavily on technology and performance, with great handling and impressive tech among its strengths.

The trade-offs are clear: the design may not be for everyone, the manual transmission is not available, and the back seat is cramped. Even so, the market shows 36.6% of listings as good or great deals, which helps if you are shopping selectively.

Is the 2021 BMW 4 Series reliable?

Owners rate it 5/5, a strong signal of long-term satisfaction.

The 2021 BMW 4 Series is described as refined and user friendly, and its powertrains are presented as quick and efficient for the class. The 430i uses a turbocharged four-cylinder, while the M440i adds a turbocharged inline-six with a 48-volt starter/generator for better fuel efficiency.

BMW also includes a four-year or 50,000-mile warranty with four years of roadside assistance, which helps support early ownership. If you buy used, the main long-term risk is that luxury-car upkeep and repair costs can still be higher than you may expect.

What should I look for when buying a used 2021 BMW 4 Series?

Accident-free inventory is solid at 79.6% — always verify the vehicle history report.

You should still check the history report carefully, because accident-free listings are not the same as guaranteed problem-free cars. Prioritize a pre-purchase inspection, especially if the car has larger wheels, performance packages, or higher-mileage use. Focus on overall condition, interior wear, and whether the equipment you want is actually present on the car you are considering.

Key things to evaluate:

• Trim level: The base setup includes standard LED headlights and taillights, front sport seats with 10-way power adjustment and driver’s memory, paddle shifters, and a leather-wrapped sport steering wheel. It also lacks the more upscale feel of the optional leather upholstery and higher-end display setup.
• Powertrain: The 430i uses a 2.0-liter turbocharged four-cylinder with 255 horsepower and 294 pound-feet of torque, while the M440i uses a 3.0-liter turbocharged inline-six with 382 horsepower and 369 pound-feet of torque. An eight-speed automatic is the only transmission.
• Safety package: Standard driver-assist features include lane-departure warning, forward-collision warning, automatic emergency braking, blind-spot monitoring, rear cross-traffic alert, automatic high beams, and speed-limit information. Adaptive cruise control requires the Driving Assistance Professional Package.
• Infotainment: The standard system includes an 8.8-inch touchscreen, while the optional setup adds a 10.25-inch central touchscreen and a 12.3-inch digital instrument cluster. Wireless Apple CarPlay and Android Auto are standard, and over-the-air capability is not mentioned.
• Fuel efficiency: The RWD 430i is rated at 29 mpg combined, 26 mpg city, and 34 mpg highway, while the xDrive version is rated at 27 mpg combined, 24 mpg city, and 33 mpg highway. BMW also notes that the M440i uses a 48-volt starter/generator for better fuel efficiency.

Which 2021 BMW 4 Series trim should I buy?

The 2021 BMW 4 Series is offered in 2 trim levels: 430i and M440i.

Here's the short version:

• Base trim: The 430i gives you the core 4 Series experience, but you will need to add options if you want the richer display setup or more advanced driver assistance.
• Premium/top trim: The M440i is the stronger choice if you want the six-cylinder engine and more performance-oriented hardware without building the car up with packages.

The safety package note to keep in mind is that adaptive cruise control is not standard and requires the Driving Assistance Professional Package.

Is now a good time to buy a used 2021 BMW 4 Series?

This is a moderate, selective buyer’s market, so you can shop carefully and still find worthwhile listings.

• Deal availability: 36.6% of listings are priced as good or great deals.
• Inventory: There are 626 listings available.
• Price trend: Prices have softened 4.45% compared with last year.
• Clean inventory: 79.6% of listings are accident-free.

If you find a listing below $32,036.09, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2021 BMW 4 Series's resale value?

The current average of $33,082 sits slightly below last year's $34,624.

That price movement suggests the market has already adjusted downward, which can make the car easier to buy now but may also limit near-term upside for a future seller. If you plan to resell later, you should expect value to depend heavily on condition, mileage, and equipment. Well-kept examples with desirable features should remain easier to move than cars with visible wear or missing options.

Vehicles with strong owner satisfaction ratings, like this model year's 5/5, tend to retain buyer demand, which supports resale value over time.

Is the 2021 BMW 4 Series safe?

It earns a 6/10 safety score from our experts.

Standard driver-assistance features include lane-departure warning, forward-collision warning, automatic emergency braking, blind-spot monitoring, rear cross-traffic alert, automatic high beams, and speed-limit information. If you want adaptive cruise control, you need the Driving Assistance Professional Package, which also adds steering assist and stop-and-go capability.

Crash-test ratings from NHTSA and IIHS are not available yet for this model year. That means you should lean more heavily on the equipment list and the car’s condition when evaluating a used example.

Should I buy a 2021 BMW 4 Series or consider a different year?

If you're weighing the 2021 against nearby model years, here's how to think about it:

Choose the 2021 if:

• 36.6% of listings are priced as good or great deals.
• Accident-free inventory is solid at 79.6% — always verify the vehicle history report.
• Price trend: Prices have softened 4.45% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.
• It brings a redesigned look, more technology, and a clear premium coupe-or-convertible identity.

Consider the 2022 if:

• At $36,170, the 2022 costs more than the current year's $33,082 average.
• It adds a five-door Gran Coupe body style with easier rear-seat access.

The bottom line: If you want the lower average price and the classic coupe-or-convertible setup, the 2021 is the better starting point. If rear-seat access and extra practicality matter more than price, the 2022 is worth a look, but you will pay more for it.

These recommendations are based on CarGurus' proprietary market data from August 21, 2026, CarGurus experts' opinions, and generative AI.