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21 BMW 8 Series M850i xDrive 2dr Auto

Available at BMW branches
Only £92,998Save £33,747 on cost new today
£4999 Deposit
£1259 Per month

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Featured specification

Standard specification

Driver Convenience

BMW legal emergency callBMW Teleservices
Brake pad wear indicatorCheck control system
Condition based serviceDrive experience control with Sport, Comfort, Eco Pro and Adaptive modes
Head up DisplayiDrive touch controller with shortcut buttons
Instrument and upper door panel in walknappa leatherIntegral active steering
Integrated owners handbookOil sensor for level and grade
On board computerOutside temperature display
Powered tailgate operationRun flat indicator
Service interval indicator 


Double wishbone front axleDynamic Damper Control
Eight speed sport automatic transmission with gearshift paddle switchesM Sport differential
Petrol Particulate FilterSport exhaust system


DAB Digital radioFavourite buttons
USB/audio interface 

Exterior Features

Air breather, kidney frame and kidney struts, model designation on side and rear in cerium greyCarbon core
Chrome M designation on front side panel, left and rightClimate comfort windscreen
Dynamic brake lightsElectrically adjustable, heated, folding exterior mirrors
Follow me home headlight functionFrameless interior mirror
Front and rear bumper system with replaceable deformation elementsFront apron with spoiler lip on bumper
Front electric windowsFully automatic and lined softtop
Heated windscreen washer jetsHigh beam assistant
Illuminated door handlesLED rear lights
Model logo on right tailgateRain sensor with automatic headlight activation
Thermally insulated windscreenThird LED technology brake light in tailgate
Welcome lights in interior and door handle areaxDrive designation on left tailgate

Interior Features

2 cup holders in front2 rear head restraints
2 X front 12v power sockets50/50 split folding rear seat
Air collar neck heatingAutomatic air conditioning with 2-zone control
Dynamic ambient interior lightingElectric front seat adjustment with driver memory
Front entry lights doorsFront reading lights
Front seat heatingFront sun visors with ticket holder and illuminated mirror
Illuminated M door sill finishersLockable glove compartment with light
M PedalsM sport leather steering wheel including multifunction controls
Microfilter and active carbon filterSteering column with adjustable height and length and activation via control on the steering column
Velour floormats 


BMW Live cockpit professional pack - 8 SeriesConnected professional pack - 8 Series
M sport exterier styling aerodynamics pack - 8 Series 

Passive Safety

ABS/EBDActive front seat headrests
Active protectionAirbags - Driver and front passenger airbag with seat occupancy detection, knee, side and front passenger seat airbag deactivation
CBC - (Cornering brake control)Child seat ISOFIX attachment rear outer seats
Crash sensor activating central locking release, hazard warning lights, fuel cut off, interior lighting, safety battery terminal clamp and airbagsDSC - Dynamic Stability Control
Dynamic brake controlDynamic Traction Control - DTC
Electromechanical parking brake with automatic drive away release and auto hold functionFront and rear brake discs with interior ventilation
Front three point with pyrotechnical belt latch tensioner seat belts, belt force limiter and belt stopperHill start assist
Rear three point with pyrotechnical belt latch tensioner seat belts and belt force limiterRoll over protection system
Side impact protectionTwo tone horn
Tyre pressure monitoring system (TPMS)Warning triangle and first aid kit


Alarm system (Thatcham 1) with electronic engine immobiliserCentre lock switch
Closing system with central lockingComfort access system
Keyless engine startLocking wheel bolts
Vehicle key with exclusive M designation
The vehicle information above was correct at time of manufacture. Please speak to the dealership for full current specification.

Technical specification

Emissions - ICE

CO0.269CO2 (g/km)231
Particles0.0001Standard Euro EmissionsEURO 6
WLTP - CO2 (g/km) - Comb247WLTP - CO2 (g/km) - Comb - TEH248
WLTP - CO2 (g/km) - Comb - TEL246WLTP - CO2 (g/km) - Extra High214
WLTP - CO2 (g/km) - Extra High - TEH215WLTP - CO2 (g/km) - Extra High - TEL213
WLTP - CO2 (g/km) - High206WLTP - CO2 (g/km) - High - TEH207
WLTP - CO2 (g/km) - High - TEL204WLTP - CO2 (g/km) - Low417
WLTP - CO2 (g/km) - Low - TEH418WLTP - CO2 (g/km) - Low - TEL417
WLTP - CO2 (g/km) - Medium255WLTP - CO2 (g/km) - Medium - TEH257
WLTP - CO2 (g/km) - Medium - TEL253 

Engine and Drive Train

CamshaftDOHCCatalytic ConvertorTrue
CC4395Compression Ratio10.5:1
Cylinder LayoutIN-LINECylinders8
Cylinders - Bore (mm)89Cylinders - Stroke (mm)88.3
Engine CodeN63B44T3Engine LayoutNORTH SOUTH
Fuel DeliveryTWIN TURBOGears8 SPEED
Number of Valves32TransmissionSEMI-AUTO

Fuel Consumption - ICE

EC Combined (mpg)28.2EC Extra Urban (mpg)35.3
EC Urban (mpg)20.8WLTP - FC (l/100km) - Comb10.8
WLTP - FC (l/100km) - Comb - TEH10.9WLTP - FC (l/100km) - Comb - TEL10.8
WLTP - FC (l/100km) - Extra High9.4WLTP - FC (l/100km) - Extra High - TEH9.4
WLTP - FC (l/100km) - Extra High - TEL9.3WLTP - FC (l/100km) - High9
WLTP - FC (l/100km) - High - TEH9.1WLTP - FC (l/100km) - High - TEL8.9
WLTP - FC (l/100km) - Low18.3WLTP - FC (l/100km) - Low - TEH18.3
WLTP - FC (l/100km) - Low - TEL18.3WLTP - FC (l/100km) - Medium11.2
WLTP - FC (l/100km) - Medium - TEH11.3WLTP - FC (l/100km) - Medium - TEL11.1
WLTP - MPG - Comb26.2WLTP - MPG - Comb - TEH25.9
WLTP - MPG - Comb - TEL26.2WLTP - MPG - Extra High30.1
WLTP - MPG - Extra High - TEH30.1WLTP - MPG - Extra High - TEL30.4
WLTP - MPG - High31.4WLTP - MPG - High - TEH31
WLTP - MPG - High - TEL31.7WLTP - MPG - Low15.4
WLTP - MPG - Low - TEH15.4WLTP - MPG - Low - TEL15.4
WLTP - MPG - Medium25.2WLTP - MPG - Medium - TEH25.0
WLTP - MPG - Medium - TEL25.4 


Badge Engine CC4.4Badge Power530
Coin Descriptioni xDriveCoin SeriesM850
Generation Mark2Insurance Group 1 - 50 Effective January 0750E
Service Interval Frequency - Months24Service Interval Mileage15500
Standard manufacturers warranty - Mileage999999Standard manufacturers warranty - Years3
Vehicle Homologation ClassM1 


0 to 62 mph (secs)4Engine Power - BHP530
Engine Power - KW390Engine Power - PSTrue
Engine Power - RPM5500Engine Torque - LBS.FT553
Engine Torque - MKG76.5Engine Torque - NM750
Engine Torque - RPM1800Top Speed155

Test Cycles

Emissions Test CycleWLTPRDE Certification LevelRDE 2


Alloys?TrueTyre Size Front245/35 R20
Tyre Size Rear275/30 R20Tyre Size SpareTYRE REPAIR KIT
Wheel StyleY SPOKE STYLE 728MWheel Type20" ALLOY

Vehicle Dimensions

Width (including mirrors)2137 

Weight and Capacities

Fuel Tank Capacity (Litres)68Gross Vehicle Weight2515
Luggage Capacity (Seats Up)350Max. Loading Weight465
Minimum Kerbweight2050No. of Seats4
Turning Circle - Kerb to Kerb11.9
The vehicle information above was correct at time of manufacture. Please speak to the dealership for full current specification.

Independent review

Review courtesy of Car and Driving

BMW 8 Series Convertible

BMW's improved 8 Series Convertible is desirable in its own right, thinks Jonathan Crouch

Ten Second Review

BMW's usefully updated 8 Series Convertible is a properly desirable luxury GT cabrio that's more affordable both to buy and to run than its closest rivals, cabriolet versions of the Bentley Continental GT and Porsche's 911. It may not be an out-and-out sports car, but it's the finest open-topped car of this kind that the Munich marque has yet made.


If every BMW is still to be the 'Ultimate Driving Machine' promised by the advertising, then that slogan must mean many things. Sharp, rewarding handling for most is what this brand is all about but in some market segments, other virtues are just as important. Take up-market large luxury convertibles. Cars like Bentley's Continental GT Convertible and the Porsche 911 Cabriolet are all about Grand Touring - fast, stylish cruising, something BMW has more experience in providing than you might expect, with a product heritage in such cars stretching all the way back to the 327 Sports Convertible of the late Thirties. And all the way forward to this car, the 8 Series Convertible, here usefully improved. This model's predecessor, the 6 Series Convertible, was a relatively rare sight on British roads. Despite a hefty price tag, it offered performance, rear seat room and boot space all little better than a BMW 4 Series Convertible costing half as much. It was a car that sold on cachet - and that wasn't enough to tempt significant numbers of wealthy buyers from their Mercedes, Jaguar and Porsche models. This 8 Series model though, has proved to be a different proposition.

Driving Experience

At the end of a day spent in pursuit of the kind of business that makes possible the purchase of a car like this, you want to be rewarded on your route home by a gloriously emotive soundtrack when you fire the engine and nose out into the traffic. That's certainly delivered by the M850i V8 version, along with an alfresco driving experience free, as you would expect, from all the roof-down buffeting and bodyshake that you'd get in a cheaper convertible. Which means that you'll be tempted to lower the roof more of the time, especially as it can be done in just 15s at speeds of up to 31mph. Raising it again cocoons you in a cabin almost as refined as you'd find in the alternative Coupe and four-door Gran Coupe models that BMW also offers in the 8 Series range. Unfortunately, the ride is somewhat firmer than some will want. And of course, it's fast. Even in the base rear-driven 840i variant, you've a 340hp in-line six cylinder petrol unit capable of sixty from rest in just 5.5s on the way to a top speed that would be well into the lock-you-up-and-throw-away-the-key area of licence confiscation were it not for a limiter that cuts in a 155mph. Otherwise, this car comes with a 4.4-litre twin turbo petrol V8, developing either 530hp in the M850i or a stonking 625hp in the top M8 Competition variant. All the powerplants on offer are torquey, with more than enough pulling power to make unnecessary as many as eight ratios in the ZF automatic gearbox. Use them and you can access performance that in the case of the M850i will catapult you to 62mph from rest in a Porsche-worrying 3.9s. The M8 Competition trims that to 3.3s. Toupees will need to be very firmly tied down.

Design and Build

This updated 8 Series Convertible now gets BMW's M Sport styling pack as standard, which gives the car a meaner look, with a more heavily structured front bumper and rear diffuser, as well as revised 19-inch wheels and upgraded brakes with blue calipers. Across the range, it's also now possible to order an illuminated front grille. V8 models get a unique front splitter and M8-style for the exterior mirrors, the rear spoiler and the diffuser. The M8 itself has redesigned 20-inch wheels. As you'd expect, the dimensions of this 8 Series Convertible body style match those of the 8 Series Coupe almost exactly. More of a surprise is that the weight of this open-topped variant isn't very much different either. A focus on body rigidity in the development of the 8 Series platform meant that only a small number of additional cabrio-specific and weight-increasing measures were required for this Convertible design. The roof is lightweight and provides superb acoustic insulation. When closed, it sits taut over the interior, thus retaining its coupe-like silhouette without compromising on design. A wind defector is standard. This can be set up in the rear-seat area to reduce turbulence when the roof is down. When not required it can be folded to half its size and stowed in the boot. Neck warmers integrated in the front-seat head restraints are also standard. There's very little back seat space but the rear-seat backrest can be split 50:50 and, thanks to this through-loading facility, the capacity of the luggage compartment can be extended as required. With the soft-top closed, the stowage capacity is 350-litres. When the roof is open though, your luggage space falls to only 280-litres. At the wheel, the key change with this facelifted model is an upgrade in the size of the central infotainment screen - from 10.25 to 12.3-inches. And the six cylinder model gets multi-contour seats as standard. Otherwise, things are the same as before.

Market and Model

Pricing starts at around £82,000 for the 840i, rising to around £111,000 for the 530hp M850i xDrive and around £133,000 for the 625hp M8 Competition version. Expect all the usual executive luxuries of course - leather upholstery and the BMW Live Cockpit Professional package, which gives you a 12.3-inch instrument binnacle dial display and a 12.3-inch centre-dash infotainment screen. All 8 Series Convertible models get xDrive 4WD, Adaptive M suspension and 'Integral Active Steering', which turns the rear wheels in either the same direction as the front wheels or the opposite direction (depending on vehicle speed). This allows for effortless lane changes, helps you dart through city traffic and facilitates a tighter turning circle with easier parking. Plus there's an M Sport braking system and you get the 'Sport' version of BMW's smooth-shifting 8-speed automatic paddleshift transmission, which means that Launch Control is standard.

Cost of Ownership

If you're spending £85,000-£135,000 on your luxury convertible, you won't be worrying too much about frugality. But with BiK taxation in mind, the CO2 stats might be of interest. The M850i with its turbocharged petrol V8 is capable of combined CO2 emissions of 246g/km. The 840i improves that to 188g/km. The M8 Competition manages 255g/km. You'll pay handsomely at the pumps to keep this car on the road of course. The worst offender is of course the M8 Competition, which is WLTP-rated at a best of 25.2mpg on the combined cycle. Routine maintenance is dictated by 'Condition Based Servicing' that monitors oil level and engine wear, taking into account how long it's been and how far the car has travelled since its previous garage visit. To help plan ahead for the cost of regular work, at point of purchase you'll be offered a 'BMW Service Inclusive' package that lasts for three years and 36,000 miles. With this, after a one-off payment, you'll have the peace of mind of knowing that all normal work on the car has been paid for during this period, including items such as oil, spark plugs and filters. On to the warranty package. BMW offers a warranty that lasts for three years, no matter how many miles you complete. You can also insure your car through BMW, though as most 8s will be funded with company money through a lease deal, this brokerage fees are likely to be bundled into that.


There are only two ways I could really imagine anyone being disappointed by this BMW. If you expect it to be an out-and-out sports car. Or if you can't afford it. The first is unrealistic. Buy a car of this kind and you're buying a Grand Tourer. That's what the target market wants. And this 8 Series is very good indeed at GT motoring. Yet at the same time, significantly more dynamically able than its 6 Series predecessor if you should want to start throwing it about. As for the prices, yes they're high but realistically you can't really have any complaints about that either, given that rival brands are asking similar sums. Bigger, faster and sleeker than before, for me it's the most desirable convertible the Bavarian brand has ever made. A car you could comfortably choose over a comparable Porsche, Bentley or Maserati? You'd better believe it.


* Depending on the age of the vehicle, MPG and CO2 may be quoted using either NEDC or WLTP testing standards.  Find out more

Figures are provided for comparison purposes. Fuel consumption under real world driving conditions and the CO2 produced will depend upon a number of factors, including any accessories fitted after registration, variations in driving styles, weather conditions and vehicle load.

Personal contract purchase

Monthly payment£1259
Term (months)48
Fixed interest rate2%
Cash price£92,998
Credit amount£87,999
Guaranteed future value£38,498
Total amount payable£103,929
Contract mileage32,000
Excess mileage charge22.94p per mile
Representative APR3.9%
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This vehicle is available at BMW branches.