Bos Auto

112 Copeland St, Quincy, MA 02169
4.4
4.4 out of 5 stars

Used 2021 BMW 4 Series 430i xDrive

24,652 miles
For Sale:$31,298
Estimated payment:$710/mo.
$0 trade-in, 10% down payment, 48 months, Great credit score

Value ChartA visual chart indicating the fair price range is between $29,100 and $34,100, while the current price is $31,298.$29,100 - $34,100$31,298
  • Priced at $31,298, this vehicle is within the current market price range of $29,100 to $34,100.

  • It has 24,652 miles, which is 34,148 (58%) below the median mileage of 58,800.

Note: This is an estimate based on a variety of factors (experimental feature). It is intended to provide a fair market value range to help guide your buying decision.

View Full Value Report

SequenceDatePrice ChangeCurrent Price
1.12/31/2025 (4 months ago)$31,498
2.1/2/2026 (3 months ago)-$200 (-0.6%)$31,298
3.1/5/2026 (3 months ago)-$300 (-1.0%)$30,998
4.1/12/2026 (3 months ago)-$400 (-1.3%)$30,598
5.1/16/2026 (3 months ago)-$200 (-0.7%)$30,398
6.3/3/2026 (a month ago)+$400 (+1.3%)$30,798
7.3/23/2026 (24 days ago)+$1,100 (+3.6%)$31,898
8.3/30/2026 (17 days ago)-$200 (-0.6%)$31,698
9.4/6/2026 (10 days ago)-$200 (-0.6%)$31,498
10.4/7/2026 (9 days ago)-$200 (-0.6%)$31,298
  • Car
  • Coupe
  • Luxury
  • High-Tech
  • Condition
    Used
  • Mileage
    24,652miles
  • Aggregate Ratings
    4
    4 out of 5 stars
  • Generation
    2(2020 - 2027)
  • Trim
    430i xDrive
  • Drivetrain
    All Wheel
  • Transmission
    8-Speed Shiftable Automatic
  • MPG
    24 city33 highwayMax range: 515 miles
  • Exterior Color
    Black
  • Interior Color
    Black Factory Paint Code:KCSW
  • Upholstery
    Leather
  • Size Segment
    Compact
  • Doors
    2
  • Max Seating
    4
  • Acceleration (0-60 mph)
    5.3seconds
  • Max Towing Capacity
    0lbs.
  • Weight Class
    < 6,000 lbs. (1)
  • Ground Clearance
    5.1inch
  • Final Assembly Point
    Dingolfing, Germany
  • VIN
    WBA73AP02MCG29958
  • Starting MSRP
    $47,600

Engine2L I4 Gasoline 255hp

  • Fuel Type:Gasoline
  • Fuel Quality:87
  • Max Horsepower:255 hp @ 5000 rpm
  • Power to Weight Ratio:14.54lbs/hp
  • Max Torque:295 ft.lbf @ 1550 rpm
  • Displacement:2liters
  • Block Type:I
  • Cylinders:4
  • Aspiration:Turbo
  • Fuel Induction:Direct Injection
  • Oil Capacity:5.2liters
  • Cam Type:DOHC
  • Stroke:3.72
  • Bore:3.23
  • Valves:16

Message from the seller

WE FINANCE NO CREDIT, NO SOCIAL SECURITY NUMBER, AND NEW CREDIT WE TAKE TRADE-INS WE PROVIDE COMPREHENSIVE INSURANCE PRODUCTS Please call 617-481-4100 for more information and appointment. Online price does not include dealer doc fee, local sales tax, title and registration fees and applicable out of state transportation fee. Online special price requires a quality trade-in or financing through Bos Auto Inc authorized lenders, please call for details. Ask us for our comprehensive insurance products information! We monitor the market daily and may adjust the price based on the real market value, please call to confirm availability and price. Inventory is subject to change without notice. Buyer is responsible for verifying vehicle information and condition prior to sale.

* Based on opinions and should be considered as general guidance only.

  • Reliability (4)
    4 out of 5 stars
    BMW generally has a good reputation for engineering, and the 4 Series is expected to be reliable, especially with proper maintenance. Early models of new generations can sometimes have minor issues, but the 430i's powertrain is well-established.
  • Maintenance (3)
    3 out of 5 stars
    Maintenance costs for a premium brand like BMW can be higher than average. Parts and labor are more expensive, and specialized servicing is often required to maintain optimal performance and warranty.
  • Technology (5)
    5 out of 5 stars
    BMW's iDrive infotainment system is intuitive and feature-rich, with a large display and seamless smartphone integration. Advanced driver-assistance systems are comprehensive and work effectively.
  • Comfort (4)
    4 out of 5 stars
    The interior is well-appointed and quiet, providing a comfortable ride for most journeys. The seats are supportive, though the rear seats can be a bit cramped for taller adults, typical for a coupe.
  • Dynamics (4)
    4 out of 5 stars
    The 430i xDrive offers a good balance of sportiness and everyday usability. The steering is precise, and the all-wheel-drive system provides confident grip, though some might find it less engaging than rear-wheel-drive variants.

  • Comfort & Seating:

    • Power Seats
  • Convenience:

    • Automatic Climate Control
    • Garage Door Opener
    • Parking Sensors
    • Rain Sensing Wipers
  • Entertainment:

    • Bluetooth
    • Premium Audio
    • Satellite Radio
  • Exterior:

    • Heated Mirrors
    • Sunroof/Moonroof
    • Tinted Windows
  • Safety:

    • Automatic Emergency Braking
    • Autonomous Braking
    • Backup Camera
    • Blind Spot Monitor
    • Collision Avoidance
    • Lane Departure Warning
    • Lane Keeping Assistance
    • Tire Pressure Monitoring
  • Technology:

    • Android Auto
    • Navigation

  • Air Conditioning

    • Front air conditioning: automatic climate control
    • Front air conditioning zones: dual
    • Air filtration: active charcoal
    • Rear vents: second row
  • Airbags

    • Airbag deactivation: occupant sensing passenger
    • Side airbags: front
    • Knee airbags: dual front
    • Front airbags: dual
    • Side curtain airbags: front
    • Side curtain airbags: rear
  • Audio System

    • Radio: voice operated
    • Auxiliary audio input: Bluetooth
    • Radio: touch screen display
    • Internet radio app: Spotify
    • Antenna type: diversity
    • Antenna type: mast
    • Watts: 205
    • Total speakers: 10
    • Radio: AM/FM
    • Radio data system
    • Speed sensitive volume control
    • Auxiliary audio input: jack
    • Auxiliary audio input: USB
    • Radio: HD radio
    • Auxiliary audio input: iPod/iPhone
    • Satellite radio: SiriusXM
  • Brakes

    • Rear brake type: ventilated disc
    • Brake drying
    • Emergency braking preparation
    • Front brake type: ventilated disc
    • Regenerative braking system
    • Braking assist
    • Electronic brakeforce distribution
    • ABS: 4-wheel
    • Power brakes
    • Electronic parking brake: auto off
    • Cornering brake control
  • Comfort Features

    • Center console trim: leatherette
    • Floor mat material: carpet
    • Dash trim: wood
    • Shift knob trim: alloy
    • Center console trim: wood
    • Armrests: rear center folding with pass-thru
    • Steering wheel trim: leather
    • Door trim: wood
    • Armrests: rear center with cupholders
    • Interior accents: aluminum
    • Interior accents: woodgrain
    • Floor mats: rear
    • Floor mats: front
    • Floor material: carpet
    • Floor material: cargo area carpet
    • Door trim: leatherette
  • Convenience Features

    • Power outlet(s): USB front
    • Power outlet(s): USB-C front
    • Power outlet(s): USB-C rear
    • Cupholders: front
    • Memorized settings: 2 driver
    • Steering wheel: tilt and telescopic
    • Power outlet(s): 12V cargo area
    • One-touch windows: 2
    • Memorized settings: climate control
    • Reading lights: front
    • Power steering: variable/speed-proportional
    • Cargo area light
    • Cruise control
    • Multi-function remote: keyless entry
    • Multi-function remote: panic alarm
    • Courtesy lights: door
    • Steering wheel mounted controls: audio
    • Memorized settings: driver seat
    • Multi-function remote: vehicle and key memory
    • Memorized settings: side mirrors
    • Push-button start
    • Vanity mirrors: dual illuminating
    • Reading lights: rear
    • Power outlet(s): 12V front
    • Memorized settings: audio system
    • Center console: front console with armrest and storage
    • Rearview mirror: auto-dimming
    • Steering wheel mounted controls: cruise control
    • Steering wheel mounted controls: phone
    • Steering wheel mounted controls: multi-function
    • Easy entry: manual driver seat
    • Universal remote transmitter: Homelink - garage door opener
    • Steering wheel mounted controls: paddle shifter
    • Storage: cargo tie-down anchors and hooks
    • Storage: cargo net
    • Storage: door pockets
    • Cupholders: rear
    • Steering wheel mounted controls: voice control
    • Storage: accessory hook
    • Touch-sensitive controls
    • Easy entry: manual passenger seat
    • Multi-function remote: trunk release
  • Drivetrain

    • Drive mode selector
    • 4WD type: full time
    • Axle ratio: 2.81
  • Engine

    • Auto start/stop
    • Battery saver
    • Battery: maintenance-free
  • Exterior Features

    • Front bumper color: body-color
    • Mirror color: body-color
    • Door handle color: body-color
    • Exhaust tip color: chrome
    • Grille color: chrome surround
    • Grille color: black
    • Rear bumper color: body-color
    • Exhaust: dual tip
    • Headlight bezel color: black
    • Window trim: black
  • In Car Entertainment

    • Connected in-car apps: Google POIs
    • Connected in-car apps: Google search
    • Infotainment screen size: 8.8 in.
    • Smartphone integration: wireless Apple CarPlay
    • Smartphone integration: wireless Android Auto
  • Instrumentation

    • Instrument cluster screen size: 8.8 in.
    • Warnings and reminders: lamp failure
    • Warnings and reminders: coolant temperature warning
    • Clock
    • Gauge: tachometer
    • Compass
    • Digital odometer
    • External temperature display
    • Multi-function display
    • Fuel economy display: MPG
    • Fuel economy display: range
    • Warnings and reminders: low oil level
    • Warnings and reminders: low fuel level
    • Warnings and reminders: maintenance due
    • Trip odometer
  • Lights

    • Daytime running lights: LED
    • Taillights: LED
    • Taillights: adaptive
    • Headlights: auto high beam dimmer
    • Exterior entry lights: puddle lamps
    • Exterior entry lights: approach lamps
    • Headlights: LED
    • Headlights: wiper activated
    • Headlights: auto delay off
    • Headlights: auto on/off
  • Mirrors

    • Side mirrors: integrated turn signals
    • Side mirror adjustments: power
    • Side mirrors: heated
    • Side mirror adjustments: reverse gear tilt
    • Side mirror adjustments: power folding
    • Side mirrors: driver side auto-dimming
  • Roof

    • Moonroof / Sunroof: tilt/slide
    • Moonroof / Sunroof: power sunshade
    • Moonroof / Sunroof: one-touch open/close
    • Moonroof / Sunroof: anti-trapping
    • Moonroof / Sunroof: remotely operated
    • Moonroof / Sunroof: power glass
  • Safety

    • Rearview monitor: in dash
    • Driver attention alert system
    • Pre-collision warning system: vibrating steering wheel
    • Pre-collision warning system: audible warning
    • Pre-collision warning system: visual warning
    • Traffic sign recognition
    • Automatic emergency braking: front pedestrian
    • Automatic emergency braking: front
    • Impact sensor: post-collision safety system
    • Child seat anchors: LATCH system
    • Impact sensor: battery disconnect
    • Impact sensor: door unlock
    • Emergency interior trunk release
    • Camera system: rearview
    • Impact sensor: fuel cut-off
    • Parking sensors: rear
    • Blind spot safety: sensor/alert
    • Lane deviation sensors
    • Impact sensor: alert system
    • Parking sensors: front
    • Crumple zones: front
  • Seatbelts

    • Seatbelt pretensioners: front
    • Seatbelt force limiters: front
    • Emergency locking retractors: rear
    • Seatbelt warning sensor: front
    • Rear seatbelts: 3-point
    • Front seatbelts: 3-point
    • Emergency locking retractors: front
  • Seats

    • Driver seat power adjustments: height
    • Passenger seat power adjustments: height
    • Driver seat power adjustments: 10
    • Rear headrests: 2
    • Rear headrests: integrated
    • Rear seat folding: split
    • Front headrests: 2
    • Passenger seat power adjustments: 10
    • Upholstery: leatherette
    • Rear seat type: 40-20-40 split bench
    • Front headrests: adjustable
    • Front seat type: sport bucket
    • Driver seat power adjustments: reclining
    • Passenger seat power adjustments: reclining
  • Security

    • Anti-theft system: alarm
    • Anti-theft system: vehicle immobilizer
    • Power door locks: auto-locking
  • Stability and Traction

    • Stability control
    • Traction control
    • Hill holder control
  • Steering

    • Steering ratio: 13.6
  • Suspension

    • Front suspension classification: independent
    • Rear suspension classification: independent
    • Rear suspension type: multi-link
    • Rear spring type: coil
    • Front stabilizer bar
    • Rear stabilizer bar
    • Front spring type: coil
    • Front suspension type: double ball joint
    • Rear shock type: twin-tube gas
    • Front struts
    • Front shock type: twin-tube gas
  • Telematics

    • Electronic messaging assistance: voice operated
    • Smart device app function: vehicle location
    • Driver assistance app: roadside assistance
    • Smart device app function: maintenance status
    • Smart device app function: lock operation
    • Smart device app function: horn/light operation
    • Smart device app compatibility: BMW ConnectedDrive
    • Smart device app function: maintenance scheduling
    • Navigation data: send destination to vehicle
    • Smart device app compatibility: Amazon Alexa
    • Satellite communications: BMW Assist
    • Wireless data link: Bluetooth
    • Navigation system: hard drive
    • Hands-free phone call integration: voice operated
    • Navigation system: touch screen display
    • Navigation data: real time traffic
    • Navigation system: voice operated
  • Tires and Rims

    • Tire type: all season
    • Tire Pressure Monitoring System
    • Wheels: painted aluminum alloy
    • Run flat tires
  • Windows

    • Window defogger: rear
    • Front wipers: speed sensitive
    • Front wipers: variable intermittent
    • Power windows: safety reverse
    • Front wipers: rain sensing
    • Solar-tinted glass
    • Laminated glass
    • Power windows: remotely operated

  • Seating:

    • Seating Rows:2
    • Standard Seating:4
    • Max Seating:4
    • Head Room (front):38in.
    • Leg Room (front):41.8in.
    • Shoulder Room (front):55.1in.
    • Head Room (rear):35.2in.
    • Leg Room (rear):34.5in.
    • Shoulder Room (rear):51in.
  • Measurements:

    • Length:187.9in.
    • Width:81.9in.
    • Height:54.8in.
    • Ground Clearance:5.1in.
    • Wheelbase:112.2in.
    • Front Track:62.3in.
    • Rear Track:62.7in.
  • Interior Dimensions:

    • Passenger Volume:86cuft
    • Cargo Volume:15.5cuft
  • Weight:

    • Curb Weight:3,708lbs
    • Gross Weight:4,619lbs
  • Wheels & Tires:

    • Wheel Diameter:18.0 x 7.5in.
    • Wheel Diameter (rear):18.0 x 7.5in.
    • Tire:225/45R18
    • Tire (rear):225/45R18
  • Performance:

    • Acceleration (0-60 mph):5.3seconds
    • Power to Weight Ratio:14.54lbs/hp
    • Aerodynamic Drag:0.26drag
    • Turning Circle:39.4ft.
    • Max Payload:728lbs
  • Fuel Tank:

    • Fuel Tank Volume:15.6gallon

Possible remaining factory warranty

  • Corrosion Perforation
    12 years/unlimited miles
  • New Car Basic Warranty
    4 years/50,000 miles
  • Transferable Powertrain
    4 years/50,000 miles
  • 24 Hour Roadside Assistance
    4 years/unlimited miles
  • Free Scheduled Maintenance
    3 years/36,000 miles

  • Abs Four Wheel
  • Airbags Front Driver
  • Airbags Front Passenger
  • Airbags Side Impact
  • Airbags Side Curtain
  • Brake Assist
  • Daytime Running Lights
  • Electronic Stability Control
  • Electronic Traction Control
  • Tire Pressure Monitoring System

  • California LEV-III SULEV30:

    • Air Pollution Score:7
    • Greenhouse Gas Score:6
    • Fuel Type:Gasoline
    • Epa Underhood Id:MBMXJ02.0B4X
  • Federal Tier 3 Bin 30:

    • Air Pollution Score:7
    • Greenhouse Gas Score:6
    • Fuel Type:Gasoline
    • Epa Underhood Id:MBMXJ02.0B4X

2021 BMW 4 Series: A Bold Step Forward

The 2021 BMW 4 Series represents a significant departure for the brand, introducing a bolder design language and a refined driving experience. Available as a sleek coupe, a versatile convertible, and the distinctive Gran Coupe four-door coupe, the 4 Series offers a compelling blend of sporty performance, luxurious appointments, and cutting-edge technology. This generation marks a maturation of the model, focusing on enhanced driving dynamics and a more sophisticated interior.

Highlights

  • Engine Options: The 2021 4 Series is powered by potent and refined BMW engines.
    • 2.0-liter Twin-Turbocharged Inline-4 (330i/330Ci/330i Gran Coupe): This powerplant delivers a spirited 255 horsepower and 310 lb-ft of torque, providing ample acceleration for everyday driving and spirited excursions. Its smooth operation and impressive fuel efficiency make it a well-rounded choice.
    • 3.0-liter Twin-Turbocharged Inline-6 (M440i/M440Ci/M440i Gran Coupe): For those seeking more exhilarating performance, the inline-six offers a robust 382 horsepower and 365 lb-ft of torque. This engine is further enhanced by a 48-volt mild-hybrid system, which provides an additional 11 horsepower boost for smoother acceleration and improved responsiveness.
  • Safety Features: BMW equips the 4 Series with a comprehensive suite of advanced driver-assistance systems designed to enhance safety and provide peace of mind.
    • Automatic Emergency Braking with Pedestrian Detection: This system can automatically apply the brakes to avoid or mitigate frontal collisions, also detecting pedestrians in the vehicle's path.
    • Lane Departure Warning: Alerts the driver when the vehicle unintentionally drifts out of its lane, prompting a correction.
    • Blind-Spot Monitoring: Warns the driver of vehicles in their blind spots, making lane changes safer.
    • Adaptive Cruise Control: Maintains a set speed and distance to the vehicle ahead, automatically adjusting to traffic flow.
    • Parking Assistant Plus: Aids in parking maneuvers with features like surround-view cameras and a rearview camera.
  • Trim Summaries:
    • 430i (Coupe, Convertible, Gran Coupe): The entry-level trim offers a balanced performance package with the 2.0-liter turbocharged four-cylinder engine. It comes well-equipped with standard features, making it a great starting point for many buyers.
    • M440i (Coupe, Convertible, Gran Coupe): This sportier designation features the more powerful 3.0-liter turbocharged inline-six engine with mild-hybrid technology. It also receives sportier styling cues and enhanced suspension tuning for a more engaging driving experience.
  • Notable Aspects:
    • Striking Exterior Design: The most talked-about feature of the 2021 4 Series is its bold, vertically oriented kidney grille. While polarizing, it undeniably gives the car a distinctive and aggressive presence on the road.
    • Upscale Interior: The cabin is a testament to BMW's commitment to luxury and driver-centric design. High-quality materials, precise craftsmanship, and a modern aesthetic create a premium environment.
    • Infotainment System: The iDrive 7 infotainment system is intuitive and responsive, featuring a touchscreen, rotary controller, and voice command. Apple CarPlay and Android Auto are standard.
    • Driving Dynamics: BMW's signature driving prowess is evident. The 4 Series offers a balanced ride, precise steering, and engaging handling, especially in the M440i variants.

What to Expect

Owning a 2021 BMW 4 Series generally translates to a premium ownership experience. Drivers can anticipate a refined and engaging driving machine that feels substantial and well-built. The interior comfort and quietness contribute to a pleasurable daily commute and long-distance journeys.

  • Maintenance: As a luxury German vehicle, routine maintenance for the 4 Series will be more expensive than that of a comparable Japanese or American model. Expect to pay a premium for oil changes, brake services, and filter replacements. Following BMW's recommended maintenance schedule is crucial for preserving the vehicle's performance and longevity. Many owners opt for BMW's Ultimate Care or Ultimate Care+ maintenance packages to help manage these costs.
  • Insurance: Insurance premiums for the 2021 BMW 4 Series will likely be higher than for less performance-oriented or less luxurious vehicles. This is due to factors such as the cost of repairs, the vehicle's performance capabilities, and the advanced technology it incorporates. Getting quotes from multiple insurance providers is highly recommended.

Potential Considerations

While the 2021 BMW 4 Series is a highly desirable vehicle, potential buyers should be aware of a few aspects:

  • Polarizing Grille Design: The prominent vertical kidney grille is a significant design element that has divided opinions. Some find it aggressive and distinctive, while others find it aesthetically unappealing. It's essential to see the car in person to determine if it aligns with your personal taste.
  • Rear Seat and Cargo Space: Especially in the coupe and convertible variants, rear-seat space can be somewhat limited, making it less ideal for regularly transporting adult passengers. Cargo space is also modest, particularly in the convertible with the top down. The Gran Coupe offers more practicality in this regard.
  • Ride Comfort: While the 4 Series offers engaging handling, some drivers might find the ride to be on the firmer side, especially in M Sport-tuned models or with larger wheel options. This can be a trade-off for the enhanced sportiness.
  • Technology Dependence: Many of the vehicle's functions are controlled through the infotainment system. While generally user-friendly, some drivers may prefer more physical buttons for certain controls.

Overall Summary

The 2021 BMW 4 Series is a bold and capable luxury sports coupe, convertible, and Gran Coupe. It offers a compelling combination of striking design, potent engine options, and a sophisticated interior. The M440i models, in particular, deliver exhilarating performance, while all variants benefit from BMW's renowned driving dynamics and advanced technology. While the distinctive grille design may be a point of contention and rear-seat space can be tight in some configurations, the 4 Series remains a strong contender for buyers seeking a premium and engaging driving experience.

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Listed on December 31, 2025 (4 months ago)
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Cruz™ Disclaimer: Vehicle details shown on this site are provided by sellers or third parties. Cruz™ does not independently verify this information and is not liable for its accuracy. All services and content are offered without any warranty, either expressed or implied. Learn more here.MPG & Max Range: Fuel economy estimates are provided by the EPA and are intended for comparison purposes only. Your actual mileage will vary depending on driving conditions, vehicle condition, and other factors.Price: Prices shown may not include taxes, fees, or other charges. Prices and availability are subject to change without notice. Contact the seller for the most current pricing information.Options & Features: Installed options may not be shown. Contact the seller for more information about available features and options.