2021 BMW M850i Convertible

MSRP $121,400 | Check Best Price

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2021 BMW M850i Convertible Price, Review, Ratings and Pictures

Updated on: October 16, 2020

T. Banerjee's image
T. Banerjee

Automotive Journalist

With the same ideology, the 2021 BMW 8 series is here among us, offered in all three versions, gran coupe, coupe and convertible. The most interesting part of the 8 series is its M performance trim, popularly known as the M850i. This topless BMW has a 523hp 4.4L turbocharged V8 engine that roars on the valley roads. With a price tag of $121,400, the 2021 BMW M850i is here to rule. 

The BMW M850i cabriolet is notably the best BMW convertible that shares its underpinnings with some of the outgoing BMW models namely the 6 series Coupe and the convertible model. The M850i has earned BMW a notable respect for bringing back the charm of the cabriolet, convertible segment again. The 2021 BMW M580i will rival the Audi R8 spyder, the Mercedes AMG GT convertible, and the Jaguar F-Type R. The 2021 M580i will soon be available in your nearest dealerships. This is our take on the new BMW M850i. 

See Detailed Review »


Powerful V8 engine delivers stunning performance

Striking exterior design

Great ride and handling


Unpleasant and tight rear seat row

6 figures price doesn't appeal

Interior has room for more improvement

What's New?

The BMW 8 Series was all-new for 2019, having said that the vehicle will remain completely unchanged from its previous iteration for the coming year model.

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vehicle bio

base price



2dr Convertible

passenger capacity


top speed

155 mph


all wheel drive

engine type


268 cu.in.


523 hp @ 5500 rpm


553 lb.-ft.. @ 1800 rpm


8-speed Automatic w/overdrive and auto-manual


suspension front

Independent front double wishbone suspension w/active anti-roll bar

brake rotors (f/r)

15.6/15 in.



111.1 in.


191.2 in.


74.9 in.


53 in.

curb weight

4736 lbs.

ground clearance

5 in.


cargo volume

12.4 cu ft.

payload capacity

772 lbs.


zero to 60 mph

3.6 sec.

zero to 100 mph

8.7 sec.


basic warranty

4 yr./ 50000 mi.

drivetrain warranty

4 yr./ 50000 mi.

corrosion warranty

12 yr./ unlimited mi.

roadside assistance


Pictures & Videos

2021 BMW M850i Convertible Exterior video


Base $121,400 onwards

523 hp @ 5500 rpm | 4.4 L | V-8 | Premium unleaded

  • 2 - 1st Row LCD Monitor
  • 20" Machined w/Painted Accents Aluminum Wheels
  • ABS and driveline Traction Control
  • Active Driving Assistant
  • Apple Carplay Integration
  • auto start-stop function
  • Bluetooth Wireless Technology Hands-Free Connectivity
  • Cruise Control
  • Driver and Front Passenger Heated-Cushion, Seatback
  • Driver Lumbar Support
  • Dual Zone Front Automatic Air Conditioning
  • Emergency Braking
  • Heated Mirrors
  • Keyfob & Smart Device Remote Keyless Entry
  • Merino Leather Seat Trim
  • Navigation System
  • Rain Sensing Windshield Wipers
  • Siriusxm Audio System
  • SiriusXM with 360L AM/FM/HD/Satellite, Seek-Scan Radio

new BMW M850i Convertible For Sale

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used BMW M850i Convertible For Sale

certified BMW M850i Convertible For Sale

Colors and Styles

2021 BMW M850i Convertible in Alpine White color 2021 BMW M850i Convertible in Black Sapphire Metallic color 2021 BMW M850i Convertible in Sonic Speed Blue color
Alpine White

Vehicle images are guides only and may not reflect the model's exact specifications/features– exact specifications/features should be confirmed with the seller.


Pricing And Features


Engine And Performance


Fuel Economy










Final Verdict




Expert Review, Pricing Analysis and Buying Guide


Overall Rating

German cars are capable of satisfying your luxury and comfort needs. With new advancements, some brands are making much powerful and tech loaded cars which have a great history of reliability and performance. One of them is BMW, the most loved german car brand. BMW also produces the most stylish convertibles that are loaded with the latest features and track-like performance. The M850i convertible is one of those machines built by BMW that defines the brand’s vision of delivering sheer joy.

2021 BMW M850i Convertible front view
2021 BMW M850i Convertible rear view

Pricing and Features

Engine and Performance

Fuel Economy





Final Verdict

2021 BMW M850i Convertible Pricing and Features


The BMW M580i convertible is available in only one trim. It gets a monstrous power output of 523 hp and 553 lb-ft of torque from the 4.4L turbocharged V-8 engine. The turbocharged V8 engine is mated with an 8-Speed automatic manual transmission. The M580i is a perfect balance of luxury and aerodynamic design. The M850i is a 2 door sports car but it has 4 person seating capacity.


BMW M850i Convertible



Key Features

20-inch M Sport wheels


BMW heads-up display


Driving assistance package


Advanced operating system


Aerodynamic air-vents

The 2021 BMW M850i Convertible, priced at $121,400, offers a luxurious interior and all sporty exterior design. With immense power under the hood and comfort inside, the M850i is loaded with advanced tech. The Vehicle is equipped with great safety features and has an impressive reliability. However, the 6 figure price of the vehicle makes it one of the most costliest cars in the market, this also translates to costly repair and maintenance after purchasing.

2021 BMW M850i Convertible side view
2021 BMW M850i Convertible side view
2021 BMW M850i Convertible side view
2021 BMW M850i Convertible side view

2021 BMW M850i Convertible Maintenance, Reliability and Warranty

BMW is not just about luxury, they offer great performance and are seriously fun to drive on the corners. Moreover, German cars are famous for their amazing build quality and reliability. The M850i convertible is not any different. BMW is also known for delivering exceptional after sales service and workmanship available at your doorstep. BMW also offers great safety features, It is not yet rated by the NHTSA and IIHS, but considering the past performance of BMW cars, the M850i will score good.

Providing the best quality over decades and hard work of the BMW has earned it quite a reputation of a luxury and performance brand in the market. For decades, BMW cars have impressed masses by their performance and unique design. The BMW M850i Convertible has not yet been rated by independent reliability rating agencies such as the J.D.Power, but still it can be trusted for its past reputation of making highly reliable cars for the US market. Though the M580i had few recalls nothing big happened.

Ownership and Maintenance Costs

After remaining discontinued for a long time, the BMW 8 Series model again made its entry in 2019 in the US. Just like other cars, BMW M850i offers great reliability and amazing resale value. Although the BMW M850i has not been rated by the JD Power yet. However, if we talk about other BMW cars, the average reliability rating is 75-80 points out of 100, so we can expect the same score from the M850i. 

BMW has a separate fanbase and its class is unmatchable. BMW cars are usable for longer periods if the scheduled maintenance is done properly. As BMW is a premium brand, we cannot expect cheap repairs or maintenance. However, getting your car fixed is easy as there's various service centers across the country. On average, the BMW M850i will have ownership cost for 5 years, estimated at $130,000.


The warranty for cars in this range is generally similar. A limited warranty of 4years/50,000miles is provided with the new 2021 BMW M850i. There's a 24-hour roadside assistance package also. Being one of the most reliable and trustworthy brands, BMW offers a great deal with its cars. The drivetrain warranty is offered with coverage of 4years/50,000miles.



Limited Warranty


Drivetrain Warranty


24-hour roadside assistance


Corrosion Warranty

12year/unlimited miles

BMW does not offer any complimentary maintenance warranty service with its cars. The limited warranty has got your back though. Rivals like Mercedes and Audi, offer the same warranty coverage. Jaguar, however, offers a lower coverage for its cars.

Miles Per Dollar

Miles Per Dollar tells us about how much your car costs to run for a mile. Surprisingly, the V-8 on the M850i offers a great combined 20 mpg, maybe the best in class. It runs on the premium fuel which costs $2.8 per gallon. The MPD comes out to be 7.14, which is amazing for a track beast like this.

2021 BMW M850i Convertible Buying Advice

The BMW M850i Convertible is a masterpiece by BMW. It is loaded with advanced features such as the latest operating system, heads-up display. luxury comfort and M-Sport accessories. The center of attraction is the 523hp power output by the 4.4L V-8 engine. The stylish design and 2-door configuration make the M850i irresistible.

BMW cars have an average reliability score of 75-80 points out of 100. With an amazing performance, the M850i also offers the best in class fuel economy. BMW sports cars are generally very reliable and the regular service will ensure that it doesn't disappoint you.

Is buying a used BMW M850i is a good idea?

BMW cars retain their value very well. For the first few years, a BMW loses its value by just 15% to 20%. The maintenance cost of premium brands is generally on the higher side. Used BMW cars tend to attract a lot of buyers as they can get a premium brand for a fairly cheap price.

2 or 3 years old BMW M850i is best suited for a used sports car choice. All the BMW cars have great usability of more than 10 years. Some iconic models by BMW stay put even after 15 years of usage.

2021 BMW M850i Convertible Engine and Performance


The power to the M850i is delivered by a powerful 4.4L V-8 motor. It outputs a whooping 523hp of power with 553lb-ft of torque. The V-8 engine is mated with an 8-Speed auto w/od manual Steptronic transmission that ensures that power and torque distribution don't consume much of the fuel.The transmission is electronically controlled. The V-8 engine performs phenomenally on the track and it does its best on the straight highways.


BMW M850i 

Audi R8 

Mercedes AMG GT

Jaguar F-Type







4.4L V-8 Premium

5.2L V-10 Premium

4.0L V-8 Premium

5.0L V-8 Premium







8-Speed Auto w/od manual

7-Speed Auto w/od manual

7-Speed Auto w/od manual

8-Speed Auto w/od manual


523hp @5,500RPM

562hp @8,100RPM

469hp @6,000RPM

575hp @6,500RPM


553lb-ft @1,800RPM

406 @6,400RPM

465lb-ft @1,700RPM

516lb-ft @3,500RPM

The Jaguar F-Type bests all the cars both in terms of power output and a fair price. All the cars are powered by a V-8 engine except the Audi R8 spyder, with its V-10 engine that revs the highest. Still, the BMW M850i is able to produce the best torque output. All the cars have AWD drivetrain whereas the Mercedes Benz AMG GT gets an RWD.

2021 BMW M850i Convertible Acceleration and Braking Performance

The most interesting part of these sports cars is their throttle response. This beast sprints from 0 to 60 mph in just 3.8 seconds. The 2020 M850i is capable of doing a quarter-mile run in a mere 11.7 seconds and we believe the same will come with the 2021 model as it remains almost unchanged.

 2021 BMW M850i Convertible accelerate 0-60 mph just in 3.8 sec.

The BMW M850i is fast but the rivals aren't behind. The braking performance is amazing on these vehicles. With M-Sport braking, the M850i can stop from 60 to 0 mph in a 105 feet distance.


BMW M850i

Audi R8

Mercedes AMG GT

Jaguar F-Type


3.8 sec

3.5 sec

3.9 sec

3.5 sec


11.7 sec

11.5 sec

11.8 sec

11.6 sec

Top Speed

165 mph

201 mph

192 mph







The Audi R8 spyder, with its V10 and the 575hp F-type, are the fastest ones in terms of 0 to 60 mph run and quarter-mile run. The Top speed on these cars is crazy going all the way up to 201mph. The top speed of the M850i is electronically limited to 165mph. The M850i could use some upgrades as it deserves to hit the 200mph mark. All the cars stop fine, where the Audi R8 being one of the fastest stopping cars does it in just 95 feet.

2021 BMW M850i Convertible Fuel Economy


BMW has made sure that M850i offers top of the line performance numbers. Even after that, the V-8 engine is able to shed a combined 20 mpg of fuel economy on the M850i. This MPG offered by the BMW M850i is the best in class. The 18.0-gallon tank is enough for the M850i is sufficient for you as you'll get an impressive range.


BMW M850i

Audi R8

Mercedes AMG GT

Jaguar F-Type

MPG City





MPG Highway





MPG Combined





Fuel Capacity

18.0 gallon

21.1 gallon

19.8 gallon

18.5 gallon

Range (City/Highway/Combined)





BMW M850i gets the best fuel economy in the class followed by AMG GT and the F-Type. Even with the biggest tank, the Audi R8 spyder is still a drunkard. The M850i offers 450 miles of highway range which is great for your travel plans as this beast is made for open roads.

2021 BMW M850i Convertible Interior


The BMW M850i has a spacious interior and unlimited headroom for you. The 4-seat 2-door configuration is offered where the rear seats are foldable. Premium leather upholstery covering the whole cabin with 8 interior color choices. The M-Sport accessories can be seen exposing all over. 

2021 BMW M850i Convertible front seat

The comfy bucket seats get 14-way power adjustments with heating function. Moving towards the doors, the door gets leather and metal look design. The center console gets all the buttons placed beside the driver's seat.

The digital gear knob looks futuristic. Centre console also gets an armrest for your comfort. The leather-wrapped sports steering wheel offers nimble handling. There are mounted controls on the steering too. The driver-oriented interior focuses on the driver.

2021 BMW M850i Convertible rear seat

The Front dashboard is an all digital console with a heads-up display on the windshield. The infotainment and other controls rest at the center with the sleek a/c vents. A sophisticated interior that will lure you with its luxury design and comfort with the perfect blend of sporty features and looks.


BMW M850i

Audi R8

Mercedes AMG GT

Jaguar F-Type

Seating Capacity





Front Row (Headroom/Shoulder room/Legroom)





Rear Row (Headroom/Shoulder room/Legroom)





The M850i offers maximum seating capacity. The figures tell us that the BMW M850i is quite spacious. In terms of cargo capacity, BMW M850i gets the biggest boot off with a massive 12.4 cubic feet of space and foldable rear seats.

How's the Infotainment on the 2021 BMW M850i Convertible?

BMW M850i gets the Live cockpit built-in. The massive 10.25-inch infotainment system is all driver-oriented. The infotainment and the instrument cluster optimize the drivers' info together with the Multi-input iDrive 7.0 system which is operable through touch, voice command, and an iDrive touchpad controller. The infotainment supports Apple CarPlay to integrate your Apple devices with your BMW. 

2021 BMW M850i Convertible infotainment system

The Bluetooth connectivity ensures that your calls get connected through the infotainment keeping your hands free. Also, the infotainment offers a Navigation system with real-time traffic display, SiriusXM subscription, Temperature display, and a Wifi-hotspot. With that infotainment, there's a premium surround sound system by Harman Kardon. The sound system comprises 12-speakers, and a 408W amplifier. For the best music experience, these 12 speakers work as tweeters, 5 midrange speakers, and 2 bass speakers.

2021 BMW M850i basic Convertible dashboard
2021 BMW M850i basic Convertible front seats
2021 BMW M850i basic Convertible shift knob
2021 BMW M850i basic Convertible seating
2021 BMW M850i basic Convertible rear seats
2021 BMW M850i basic Convertible rear seats foldable
2021 BMW M850i basic Convertible front seats
2021 BMW M850i basic Convertible cockpit area

2021 BMW M850i Convertible Exterior


The M850i Convertible gives the most striking appearance ever by a BMW. The signature kidney-grille is sleeker to be aligned with those sharp LED DRLs. Front fascia is updated with massive air vents for proper aerodynamic experience. The rear design looks appealing with those long-tail lamps covering the best part of the boot lid. Moving down, you'll come across two massive exhaust with premium chrome tip design. 

 2021 BMW M850i Convertible third quarter view

This one is all about aerodynamic wind cutting design. The M850i looks bold with those 20-inch chrome rims exposing the M sport brakes. The overall look is phenomenal and with personalization, the M850i gets much better. BMW love's chrome and never forgets to put a lot of it on its cars. This one is surely the perfect blend of proper luxury-sports cars.


BMW M850i

Audi R8

Mercedes AMG GT

Jaguar F-Type

Curb Weight




















Ground Clearance










M850i is the biggest car in terms of dimensions. Also, 5.0-inch ground clearance is a pretty nice touch. With the widest wheelbase, the M850i offers the best handling and ride quality.

2021 BMW M850i basic Convertible rear view
2021 BMW M850i basic Convertible three quarter view
2021 BMW M850i basic Convertible right side view
2021 BMW M850i basic Convertible rear view
2021 BMW M850i basic Convertible left side view
2021 BMW M850i basic Convertible front view
2021 BMW M850i basic Convertible grille
2021 BMW M850i basic Convertible headlamp
2021 BMW M850i basic Convertible tail light

2021 BMW M850i Convertible Safety


With the amazing German build quality, the BMW M850i isloaded with a load of safety tech and features. For intelligent safety, M850i gets Forward collision warning, city collision mitigation, and braking with daytime pedestrian protection. There's safety airbags mounted to the side of the seats, 3-point safety belts. These features react with the high tech BMW Active Protection system that detects accidents and activates the safety protocol by securing the cabin and deploying safety systems. BMW cars have performed really well in the past. In terms of safety, five stars in NHTSA and a good rating in the IIHS is nothing new for BMW.

2021 BMW M850i Convertible Competition


BMW M850i convertible vs Audi R8 spyder

Audi R8 spyder is a beast on the track with its V10 engine. Loads of tech and features are offered as standard on the R8. Also, it has won so many awards for its performance.

2021 Audi R8 Spyder

But it is too pricey to be true. That's why where M850i comes in the picture with its luxury design, close performance, and yes, a low price.

BMW M850i vs Mercedes AMG GT

The sleekest machine on the planet which is offered in various trims. The AMG GT is a true luxury performance car. With its various customization options and style, it is a fierce rival to the M850i.

2021 Mercedes AMG GT-Roadster

The BMW M850i leans the best through the corners and offers great handling.

BMW M850i vs Jaguar F-Type

The F-type is the best value for money, high-performance sports car. It gets similar luxury and tech features like BMW. The design resembles Ferrari which makes it more appealing.

2021 Jaguar F-TYPE

Still, M850i looks more sophisticated and sensible with its performance and safety features.

2021 BMW M850i Convertible Final Verdict


The M850i is beautifully crafted for the best M-Sport experience ever in a BMW. This one is loaded with the best stuff BMW offers. A 523hp V8 isn't something we see every day and that too with a great fuel economy. BMW's reputation in the market tells us how M850i is different from the other. The M850i is the bridge between the luxury and performance car world. With its stylish curves and premium design, the M850i has revolutionized the 2-door car segment. There's the latest technology inside the car that will keep you updated and entertained as well. The price tag of $121,400 is not cheap but it is an opportunity for the enthusiasts to enter the sports car world in style. The Luxury and comfort are unmatchable as BMW pulls it out the best. In 2021, M850i is the most sorted car. And it does look best without the roof.