*All advertised prices exclude government fees and taxes, any finance charges, any dealer document preparation charge, any emission testing charge and any aftermarket/optional add-on products such as premium wheel kits, lift kits, lowering kits, luxury tint, etc. *Advertised prices exclude dealer-added products such as theft protection and other protection plans, they are an additional cost when applicable. *Sale prices are valid for retail purchases only and do not include dealer installed K&S Protection Plan items when applicable (Guardian GPS $1,500, Mobile Clear Shield $799). *No sales to Dealers, Brokers or Exporters. *For out of state purchase, customers must be present to purchase. If shipping is required, dealership must facilitate; no exceptions. Please contact us for special Multi-Vehicle or Fleet pricing. *Prices are plus government fees and taxes, any finance charges, documentary fee, electronic registration fee, any emission testing charge and new tire state tire fee. *While we try to make sure that all prices posted here are accurate at all times, we cannot be responsible for typographical and other errors that may appear on the site. *We make every effort to provide you the most accurate, up-to-the-minute information; however, it is your responsibility to verify with the Dealer that all details listed are accurate. *The dealership is not responsible for typographical, pricing, product information, advertising or shipping errors. *Advertised prices and available quantities are subject to change without notice. *All rates and offers are dependent on bank approval, which varies based on applicant's credit as well as the vehicle. *Images, prices, and options shown, including vehicle color, trim, options, pricing and other specifications are subject to availability, incentive offerings, current pricing and credit worthiness. *ALL SALES ARE FINAL PLUS ANY AFTERMARKET WHEELS, LIFT KITS, LOWERING KITS, TINT, ACCESSORIES, PRE-INSTALLED THEFT DETERRENT DEVICES, DOC PREP FEES, SMOG FEE, SALES TAX, DMV LICENSE FEES, REGISTRATION FEES, SMOG CERTIFICATE FEE...CALL DEALER FOR MORE INFORMATION AND DETAILS. THANK YOU!
Max payload/towing estimate ratings shown. Additional options, equipment, passengers, and cargo weight may affect payload/towing weights. See dealer for details.
2018 BMW M4 10855
- Used
Please Call
K&S Alfa Romeo of San Diego
Call 619-304-1725
We’re here to help
The overview
- Exterior Color
- Alpine White
- Interior Color
- Black
- Odometer
- 65,819 miles
- Body/Seating
- Convertible/4 seats
- Seats
- 4 seats
- Transmission
- Automatic
- Engine Layout
- 6
- VIN
- WBS4Z9C50JEA24169
- Stock Number
- 10855
The highlights
- Navigation system
- Leather upholstery
- Automatic temperature control
- Emergency communication system
- Wireless phone connectivity
- Power convertible roof
- Exterior parking camera rear
- Front dual zone A/C
- Rain sensing wipers
- Speed sensitive wipers
- Auto-dimming rearview mirror
- Memory seat
The full specifications
- 1-touch down
- 1-touch up
- Air conditioning
- Auto-dimming rearview mirror
- Automatic temperature control
- Driver door bin
- Driver vanity mirror
- Emergency communication system: BMW Assist eCall
- Front beverage holders
- Front dual zone A/C
- Garage door transmitter
- Illuminated entry
- Memory seat
- Navigation system
- Passenger door bin
- Passenger vanity mirror
- Power windows
- Proximity key: doors and push button start
- Rear air conditioning
- Rear beverage holders
- Remote keyless entry
- Residual heat recirculation
- Speed control
- Telescoping steering wheel
- Tilt steering wheel
- Trunk/hatch auto-latch
- Adaptive suspension
- Alloy wheels
- Four wheel independent suspension
- Front anti-roll bar
- Power steering
- Rear anti-roll bar
- Speed-sensing steering
- Sport suspension
- Tires: performance
- 1st row LCD monitors: 1
- AM/FM radio: SiriusXM
- CD player
- CD-MP3 decoder
- DVD-Audio
- Diversity antenna
- Internal memory capacity (GB): 20 GB
- Primary LCD size: 8.8"
- Radio data system
- Satellite radio trial duration with new vehicle purchase (months): 12
- Speaker type: harman/kardon
- Speakers: 16
- Steering wheel mounted audio controls
- Wireless phone connectivity: Bluetooth
- Front center armrest
- Front seats: bucket
- Heated front seats
- Leather shift knob
- Leather steering wheel
- Leather upholstery
- Max seating capacity: 4
- Power 4-way driver lumbar support
- Power 4-way passenger lumbar support
- Power driver seat
- Power passenger seat
- Rear seat center armrest
- Rear seats: bench
- Rear seats Folding position: fold forward seatback
- Sport steering wheel
- Compressor: twin turbo
- Cylinder configuration: I-6
- Drive type: rear-wheel
- Engine liters: 3.0
- Engine location: front
- Fuel economy city: 17mpg
- Fuel economy combined: 20mpg
- Fuel economy highway: 25mpg
- Fuel tank capacity: 15.9gal.
- Horsepower: 444hp @ 5,500RPM
- Limited slip differential: electro-mechanical
- Number of valves: 24
- Recommended fuel: Premium Unleaded
- Torque: 406 lb.-ft. @ 1,850RPM
- Variable intake manifold
- Variable valve control
- Auto-dimming door mirrors
- Bumpers: body-color
- Convertible hard top
- Convertible roof lining
- Convertible roof wind blocker
- Door mirrors: body-color
- Glass rear window
- Heated door mirrors
- Power convertible roof
- Power door mirrors
- Rear cargo: trunk
- Tailpipe finisher: chrome
- Turn signal indicator mirrors
- Compression ratio: 10.20 to 1
- Engine bore x stroke: 84.0mm x 89.6mm (3.31" x 3.53")
- Engine displacement: 3.0 L
- Engine horsepower: 444hp @ 5,500RPM
- Engine torque: 406 lb.-ft. @ 1,850RPM
- Exterior body width: 1,869mm (73.6")
- Exterior height: 1,387mm (54.6")
- Exterior length: 4,686mm (184.5")
- Front headroom: 1,026mm (40.4")
- Front legroom: 1,072mm (42.2")
- Front shoulder room: 1,405mm (55.3")
- Interior cargo volume: 224 L (8 cu.ft.)
- Interior maximum cargo volume: 371 L (13 cu.ft.)
- Payload: 308kg (680lbs)
- Rear headroom: 942mm (37.1")
- Rear legroom: 841mm (33.1")
- Rear shoulder room: 1,265mm (49.8")
- Turning radius: 6.1m (20.0')
- Wheelbase: 2,812mm (110.7")
- Delay-off headlights
- Display: analog
- Exterior parking camera rear
- Front reading lights
- Fully automatic headlights
- Low tire pressure warning
- Outside temperature display
- Rain sensing wipers
- Rear reading lights
- Rear window defroster
- Speed sensitive wipers
- Tachometer
- Trip computer
- Variably intermittent wipers
- 4 wheel disc brakes
- ABS brakes
- Brake assist
- Dual front impact airbags
- Dual front side impact airbags
- Electronic stability
- Ignition disable
- Integrated roll-over protection
- Knee airbag
- Occupant sensing airbag
- Panic alarm
- Perimeter/approach lights
- Security system
- Tracker system
- Traction control
Notes from the dealer
Experience the ultimate open-air driving machine with this stunning 2018 BMW M4 Convertible. Finished in classic Alpine White, this high-performance luxury convertible commands attention on every road, perfectly contrasted by its refined Black interior. Melding the aggressive, muscular styling of the BMW M division with the freedom of a retractable hardtop, this vehicle offers an unparalleled sensory experience. Whether cruising along scenic coastal highways or navigating city streets, this Alpine White M4 Convertible delivers a perfect blend of premium sophistication and head-turning style for the discerning enthusiast.Under the hood, this 2018 BMW M4 is powered by a potent 3.0L 6-cylinder engine featuring twin-turbocharged technology to deliver relentless acceleration. Elevating its capability even further is the highly coveted, factory-equipped Competition Package. This package sharpens the vehicleâs driving dynamics by increasing engine output to 444 horsepower, tuning the Adaptive M Suspension for superior cornering precision, and upgrading the Active M Differential. Complete with a sport exhaust system that emits an exhilarating, throatier exhaust note, this convertible transforms every drive into a racetrack-inspired adventure.Inside the driver-focused cabin, the premium Black interior envelops you in sporty luxury, offering highly supportive sport seats designed to keep you secure through tight turns. The retractable hardtop operates seamlessly, allowing you to transition from a quiet, coupe-like cabin to open-air excitement in seconds. Visual highlights of the Competition Package include exclusive forged light-alloy wheels and high-gloss Shadowline exterior trim, completing its aggressive aesthetic. For buyers seeking a world-class sports car that offers breathtaking speed, elite German engineering, and the unmatched joy of top-down driving, this 2018 BMW M4 Convertible is the ultimate choice.
KBB.com Consumer Reviews
3.8out of 5 overall- 5.0
Best Value Car ON THE MARKET
by Ryan on 6/29/2026 5:05:47 AM
I’ve wanted a M4 for 5 years. I have had this chassis 3 times, all with a slightly larger i6 each time. The M4 Is the 3rd 4 series chassis i’ve owned and it is extremely different than the others in the best way possible. This car has a DCT transmissions similar to cars such as like ferraris, porsche and lamborghini. It has a carbon roof that is also found in those category’s of cars along with a twin turbo, quad exhaust bucket seats and weight reduction everywhere. The aggressive styling is the chef’s kiss, aggressive body lines and 666M wheels make the car feel special. Simple’s put this car is extremely over engineered in the best way possible! Maintenance is doable at home with proper equipment, labor is not extensive unless you plan to modify which this platform welcomes it kindly on the aftermarket. I put 5k maintenance and parts along with Carbon fiber genuine pieces to make it my own. in + it’s better looking and cheaper than the M3. Never selling this car. 6 month review 10/10 - 5.0
Awesome Driving Machine
by Mike on 9/17/2025 1:30:12 PM
I bought a 2018 M4 convertible online--my first time purchasing before driving a car. The M4 is exactly as advertised. It is responsive and powerful when required but tame enough for a leisurely drive on a Sunday afternoon. Of course, it looks terrific in my driveway and on the move. - 5.0
M4 Competition
by Earl on 1/5/2024 6:06:43 AM
I can tell you now, I've had a 2015 and then a 2018 M4 Competition. I have moved to an electric BMW I4 but that 2018 M4 is my favorite all time car. I never had any issues. It looks and sounds good. The handling is perfect, especially in sport mode which I drive most of the time. I had mine tuned and it went from 444 to 549 HP for $800. Wow, did that M4 fly. I miss the car very much. The M4 as a used car is a great deal. Have fun.
