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BMW M4 Competition Convertible with M xDrive, BMW M440i xDrive, M440i and M440d xDrive Convertible.
THE BMW 4 SERIES CONVERTIBLE M AUTOMOBILES IN COMPARISON.
The most important performance facts at a glance: power train, suspension and engine output.
BMW M4 Competition Convertible with M xDrive.
Maximum driving dynamics and traction.
- High-performance M TwinPower Turbo inline 6-cylinder petrol engine with 510 hp
- Fast 8-speed M Steptronic transmission with Drivelogic
- All-wheel drive M xDrive with Active M Differential
- 375 kW (510 hp), 650 Nm, 0–100 km/h in 3.7 sec
BMW M440i xDrive / M440i Convertible.
Open sportiness and high driving dynamics with unlimited suitability for everyday use.
- M TwinPower Turbo inline 6-cylinder petrol engine with 374 hp
- 8-speed Steptronic Sport transmission
- BMW xDrive or Rear Wheel Drive. M Sport differential
- 275 kW (374 hp), 500 Nm, 0–100 km/h: 4.9/5.2 sec
BMW M440d xDrive Convertible.
Open sportiness and high driving dynamics with unlimited suitability for everyday use.
- BMW M TwinPower Turbo inline 6-cylinder diesel engine with 340 hp
- 8-speed Steptronic Sport transmission
- BMW xDrive and M Sport differential as standard
- 250 kW (340 hp), 700 Nm, 0–100 km/h in 5.0 sec
- BMW M4 Competition Convertible with M xDrive.
- BMW M440i xDrive / M440i Convertible.
- BMW M440d xDrive Convertible.
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BMW M4 COMPETITION CONVERTIBLE WITH M xDRIVE – PRODUCT HIGHLIGHTS.
Driving dynamics and design features of the BMW M4 Competition Convertible with M xDrive.
As the most powerful model among the BMW 4 Series Convertible M Automobiles, the BMW M4 Competition Convertible with M xDrive offers inspiring agility and reveals its impressive capabilities over every kilometre. With a muscular 510 hp (375 kW), its high-performance M TwinPower Turbo engine and a wealth of powertrain and suspension technologies inspired by motorsport it delivers a convincing display. Combined with the M xDrive all-wheel drive system with Active M Differential, this high-end convertible is a guarantee of boundless driving dynamics that ultimately embodies the essence of M. At the same time, its aesthetic balance of dynamic contours and powerful proportions produce a captivating design. Expressive design elements such as the continuous black sills and the diffuser with the distinctive twin tailpipes underline the close connections with motor racing – additionally emphasised by the carbon highlights of the optional M Carbon exterior package. The interior has a consistently driver-oriented design and, with its numerous M features such as the optional M Carbon bucket seats with seat ventilation and air collar, produces a sporty and exclusive atmosphere.
- Dynamics
- Design
High-performance M TwinPower Turbo inline 6-cylinder petrol engine.
The high-performance M TwinPower Turbo inline 6-cylinder petrol engine features superior power delivery and the striking characteristic M engine sound. Two mono-scroll turbochargers, direct High-Precision Injection, fully variable valve control and variable camshaft control ensure outstanding performance.
8-speed M Steptronic transmission with Drivelogic.
The 8-speed M Steptronic transmission with Drivelogic offers numerous shifting options: extremely dynamic, particularly comfortable and smooth, fuel-saving. You can shift manually using the gear lever or the gearshift paddles on the steering wheel, or select one of three automatic programmes using Drivelogic.
M xDrive.
BMW M xDrive with Active M differential guarantees maximum traction and driving dynamics for everyday driving, as well as at the racetrack. The M specific technology combines the typical agility of a rear-wheel drive with the control of an all-wheel drive. You can choose between the drive variants 4WD, 4WD Sport and – in DSC-off mode – 2WD.
M Carbon ceramic brake.
With the optional M Carbon ceramic brake, the use of braking power is even more direct, it is corrosion-free, even more heat-resistant, greatly reduced in wear and contributes to weight savings, which has a positive effect on agility, dynamics and acceleration. The technical equipment is visible through carbon-ceramic brake discs and calipers in the colour Gold matt with M lettering on the front and rear axle on the outside. Due to specific material properties, increased operating noise may occur during braking, e.g. in case of prolonged, low load or in wet conditions shortly before vehicle standstill. The design-related noise can be avoided by braking the brake dry in case of wetness or loading the brake more heavily after a long low braking load. The influence of wetness and road salt cause brake effectiveness to correspond to that of a conventional brake system. This reduced braking power can be compensated for with a greater pressure on the pedal. The functional noises have no influence on the performance, operational safety and stability of the brake.
M Compound brake.
Thanks to the use of various materials, M Compound brakes achieve outstanding deceleration values, are extremely stable and weigh less. The brake calipers in Blue high-gloss with M lettering lend this high-performance brake system a distinctly sporty appearance.
M Sport exhaust system.
The M Sport exhaust system delivers a dynamic sound that can be modified via the integrated exhaust valve mechanism. The SPORT and SPORT+ programmes, which can be selected via the SETUP button, are accentuated by an even more intense engine sound, while the comfort-oriented programme prioritises more discreet engine acoustics.
Front design.
The front of the BMW M4 Competition Convertible with M xDrive is characterised by its sporty and puristic styling. At the centre is the frameless kidney grille with its bold character in a pared-back and dynamic interpretation including model logo. Inside the kidney grille are typical M double louvres, with their horizontal alignment providing a fascinating contrast to the otherwise vertically aligned grille. Rounding off the progressive appearance of the front are the large central air inlets with their M-typical trapezoid shape and the narrow headlights tapering diagonally towards the kidney grille.
M Carbon bucket seats.
The M Carbon bucket seat with illuminated M4 logo combines the lightness and racing character of a bucket seat with the range of functions of an M Sport seat. Its contouring offers perfect side support and excellent long distance comfort. It is compatible with multipoint harnesses and therefore fully suitable for racing.
Side design.
With the top open, the side view of the BMW M4 Competition Convertible with M xDrive displays a harmonious balance between dynamics and aesthetics. M-specific design elements such as the M gills and the M exterior mirrors impart an exclusive note to the flanks of the vehicle. In contrast, the forged light alloy wheels with M Compound brakes and the black sill inspired by motor sport underline the sporty ambitions of this high-performance convertible.
19"/20" M forged wheels Double-spoke style 825 M Orbit Grey matt with mixed tyres.
19"/20" M forged wheels Double-spoke style 825 M Bicolour Orbit Grey matt with mixed tyres, gloss-lathed rim/rim flange, wheel size front 9.5J x 19 with 275/35 R19 tyres, wheel size rear 10.5J x 20 with 285/30 R20 tyres.
Softtop.
The anthracite softtop with silver effect blends harmoniously into the dynamic lines of the vehicle. At the push of a button, it opens and closes electrically in approximately 18 seconds, even while driving at speeds of up to 50 km/h. One of the outstanding properties of this high-quality softtop is its excellent noise insulation.
Rear design.
The rear of the BMW M4 Competition Convertible with M xDrive systematically continues the athletically elegant character of the side section. Together with the broad track of the M-specific axles, the muscular wheel arches create a powerful stance and underline the performance promised by this exceptional sports convertible. The discreetly contoured rear spoiler additionally emphasises the extended elegance of the rear. At the same time, it directs attention to the two additional sporty highlights: the vertical reflectors and the optional diffuser in carbon with the impressive twin tailpipe unit.
M Carbon exterior package.
The M Carbon exterior package underlines the athletic demands of the vehicle. Spoiler elements in the front bumper and exterior mirror caps are made of carbon-fibre reinforced plastic (CFRP). The package is rounded off by a striking carbon-fibre diffuser insert at the rear.
M Carbon steering wheel.
The M Carbon steering wheel provides a racing feel. The carbon-fibre trim strips in the spokes surround the operating elements and complement the high-quality feel of the steering wheel. The racing-tested material fits the dynamically designed interior visually, too.
BMW M4 COMPETITION CONVERTIBLE WITH M xDRIVE – IMPRESSIONS.
The design highlights of the BMW M4 Competition Convertible with M xDrive in the exterior and the interior.
BMW M4 Competition Convertible with M xDrive G83 2021 front view with double kidney grille
M Carbon bucket seats BMW M4 Competition Convertible with M xDrive G83 2021 interior with open softtop
BMW M4 Competition Convertible with M xDrive G83 2021 BMW Individual Frozen Portimao Blue metallic bird’s eye view with open softtop
BMW M4 Competition Convertible with M xDrive G83 2021 side view with open softtop
BMW M4 Competition Convertible with M xDrive G83 2021 three-quarter rear view
Softtop BMW M4 Competition Convertible with M xDrive G83 2021
BMW M4 Competition Convertible with M xDrive G83 2021 interior with open softtop
BMW M4 Competition Convertible with M xDrive G83 interior 2021 centre console
BMW M440i xDRIVE, M440i AND M440d xDRIVE CONVERTIBLE – PRODUCT HIGHLIGHTS.
Driving dynamics and design features of the BMW M440i xDrive, M440i and M440d xDrive Convertible.
Free radical: here you can explore an excellent selection of sporty equipment options for the BMW M440i xDrive, M440i and M440d xDrive Convertible. Striking M-specific design features in Cerium Grey and exclusive interior highlights render the urge for freedom of the sports convertible instantly palpable.
- Dynamics
- Design
M TwinPower Turbo inline 6-cylinder petrol engine.
Commanding power, silky-smooth running and a stirring sound are the hallmarks of the M TwinPower Turbo inline 6-cylinder petrol engine from the new generation of the BMW EfficientDynamics engine range. With Double-VANOS, Valvetronic, High-Precision Injection and a TwinScroll turbocharger, it is particularly powerful and efficient.
M sport differential.
The standard M sport differential optimises traction and driving stability when changing lanes or accelerating out of a bend, when taking bends at high speeds or on different road surfaces. Traction is optimised with the help of an electronically operated device that reduces the difference in revolution speed between the rear wheels.
Adaptive M suspension.
The optional Adaptive M suspension can be electrically adjusted at any time to suit the road and driving conditions. You can also adjust the suspension characteristics via the Driving Experience Control to enable your preferred driving style at the time – from comfortable to extremely athletic with markedly agile handling.
Variable sport steering.
The variable sport steering with Servotronic creates a direct and agile steering response and ensures that less physical effort is required to turn the wheel. It reacts to the angle of the steering wheel with varying steering ratios. This improves handling when driving more dynamically and reduces the effort needed to steer when parking and turning.
Steptronic Sports transmission.
The 8-speed Steptronic Sport transmission offers incredibly sporty gear changes. Whether automatic or manual using the selector lever or gearshift paddles – for comfortable coasting or incredibly dynamic driving. In SPORT mode and with the selector lever in the left-hand S/M position, the gear shifts are configured for the maximum performance.
M Sport brake.
The M Sport brake has four-piston fixed callipers at the front and single-piston floating callipers at the rear in blue with the M designation and features large brake discs to ensure an outstanding braking performance.
M kidney frame in Black high-gloss.
The distinctive vertical BMW double kidney grille pays homage to motorsport legends such as the BMW 328. The exclusive kidney grille frame in Black high-gloss from the optional M high-gloss Shadow Line with extended contents adds a special presence and a particularly sporty accent to the progressive kidney grille.
Mirror caps in Cerium Grey.
The mirror caps in the M signature colour Cerium Grey give the BMW M440i xDrive Convertible an even more exclusive and sporty appearance and indicate at first glance that this car belongs to the BMW M family.
M Aerodynamic package.
The M Aerodynamic package with M specific front apron, rear apron and side skirts in body colour and a two-piece diffuser insert in black high-gloss conveys pure dynamics and sportiness. In conjunction with the optional M Carbon exterior package, the diffuser is finished in carbon.
M Carbon exterior package.
The optional M Carbon exterior package underlines the athletic demands of the vehicle. Spoiler elements in the front bumper and exterior mirror caps are made of carbon-fibre reinforced plastic (CFRP). The package is rounded off by a striking carbon-fibre diffuser insert at the rear.
18" M light alloy wheels Double-spoke style 848 M Bicolour Jet Black.
18" M light alloy wheels Double-spoke style 848 M Bicolour Jet Black with mixed tyres, gloss-lathed, wheel size front 7.5J x 18 with 225/45 R18 tyres, wheel size rear 8.5J x 18 with 255/40 R18 tyres.
Sport seats for driver and front passenger.
Individually adaptable sport seats for driver and front passenger are characterised by their numerous manual adjustment options, including seat length as well as seat and backrest angles. Thanks to the higher bolsters on seats and backrests as well as prominent side bolsters, they offer outstanding ergonomics and a high level of side support. The sport seat for the driver also features a variable lumbar support.
M Leather steering wheel.
The M Leather steering wheel including multifunction buttons, an M badge and an integrated driver-side airbag is featured in three-spoke design. With a steering wheel rim in leather 'Walknappa' Black with black stitching and contoured thumb rests, it provides a direct, athletic steering experience.
BMW M440i xDRIVE CONVERTIBLE – IMPRESSIONS.
The design highlights of the BMW M440i xDrive Convertible in the exterior.
DRIVER´S COCKPIT & TECHNOLOGIES.
M specific instruments, operating concept, digital services and driver assistance systems of the BMW 4 Series Convertible M Automobiles.
Comfort, safety and M sensation at a supreme level: the BMW 4 Series Convertible M Automobiles support you during the journey with numerous innovative technologies. Ensuring you of maximum clarity are the M-specific instrument cluster and the M-specific Head-Up Display.* Features like the individually configurable M Setup*, the red start/stop button* and the centre console with M MODE* and SETUP* buttons offer additional motor racing flair. Benefit from intelligent driver assistance systems while driving and parking or communicate in a new and simple way with your BMW 4 Series Convertible M Automobile through the BMW Intelligent Personal Assistant. In addition, many connectivity features and digital services are available to provide you with an ideal link to your vehicle and the world to make your mobile life even more comfortable. * Available for BMW M4 Competition Convertible with M xDrive.
- M specific instruments & operating concept
- Connectivity & digital services
- Driver assistance systems
M specific instrument cluster.
The M specific instrument cluster* offers a particularly precise and focused display of driving data in the SPORT and TRACK modes. In this way, values such as boost pressure or tyre pressure and temperatures are always in view, even on the race track. Operation and configuration is carried out using the M MODE button on the control unit in the centre console. * Available for the BMW M4 Competition Convertible with M xDrive.
BMW Live Cockpit Professional.
The BMW Live Cockpit Professional with navigation function includes two high-quality displays consisting of a high-resolution 10.25" Control Display that can be operated by touch and a fully digital 12.3" instrument display. The BMW Operating System 7 can also be operated via the iDrive Touch Controller.
M Setup.
The M Setup* allows you to configure various driving dynamics parameters such as engine, transmission and steering characteristics, damper settings, Dynamic Stability Control (DSC) control intensity or the power distribution of the M xDrive all-wheel-drive system according to your personal requirements. * M Setup is available for the BMW M4 Competition Convertible with M xDrive.
Integrated M specific braking system
In addition to saving approximately 2 kg in weight, the integrated M specific braking system of the BMW M4 Competition Convertible with M xDrive provides very high braking dynamics. For a maximum level of individualisation, the driver can choose between “Comfort” and “Sport” brake pedal parameters according to the situation. Depending on the parameters, the response behavior is designed differently. In “Sport” mode, deceleration is higher with the same distance of pedal travel particularly at low speeds while the response of the two parameter settings is very similar at high speeds.
BMW Head-Up Display with M specific functions.
The full-colour BMW Head-Up Display with M specific functions* projects information relevant for the journey directly into your field of vision. With the press of a button, you can switch to the M specific display, which includes a gear indicator, the rpm as a dynamic range curve with shift lights indicating the optimal moment to shift as well as navigation tips. * M specific functions are available for the BMW M4 Competition Convertible with M xDrive.
Centre console control panel.
In the easy-to-reach centre console control panel, the M MODE* button below the Start/Stop button allows you to change the contents of the display. The SETUP* button offers even more choice for configuring the vehicle characteristics. It opens the menu for individual adjustments to the driving dynamics. Additional buttons switch individual assistance systems off or on. * M MODE and SETUP are available for the BMW M4 Competition Convertible with M xDrive.
Red Start/Stop button.
The red Start/Stop button* allows the engine to be started without using the key once the vehicle has been unlocked. It can also be used to stop the engine. The vehicle key is recognised automatically, without having to insert it. * The red Start/Stop button is available for the BMW M4 Competition Convertible with M xDrive.
BMW Digital Key.
No need to take the key with you as long as you have your iPhone with you. You can lock and unlock your BMW and even start it with the BWM Digital Key. You can also authorise up to five people with compatible iPhones* to use your BMW. * The BMW Digital Key is only compatible with selected iPhones. A list of compatible iPhones is available at bmw.com/digitalkey
Remote Software Upgrade.
The latest software version always on board. With Remote Software Upgrade, your BMW will always be up to date. You can simply download the upgrades via the My BMW App or via the SIM card installed in the vehicle and then install them. In this way, other available functions in your BMW are also activated.
Smartphone integration.
Why go without the features of your smartphone in your BMW when you can continue operating it as usual? With smartphone integration, your vehicle supports Apple CarPlay and Android Auto by means of a wireless connection between your smartphone and the vehicle. This allows you to conveniently use familiar functions and various apps in the vehicle.
Wi-Fi hotspot.
Take part in video conference calls on your tablet or stream the final episode of your favourite series on your smartphone. The Wi-Fi hotspot is a way to go online with LTE speed (if available) using the SIM card installed in your vehicle. You and your fellow passengers can surf the Web on up to ten devices.
Connected Package Professional.
BMW Maps with Connected Navigation, Remote Services, Smartphone Integration incl. Apple CarPlay and Android Auto, In-Car Experiences and Concierge Service – the Connected Package Professional provides ample networking capability for your BMW. You benefit from increased comfort and improved operation.
Telephony with wireless charging.
Telephony with wireless charging incorporates a wireless charging dock and a second microphone for a better hands-free voice quality for you and your front passenger. An additional aerial connection improves mobile reception. Two mobile telephones and an audio player can be connected simultaneously via Bluetooth. Also included is the technical capacity for a Wi-Fi hotspot.
M Drive Professional.
M Drive Professional* is the perfect companion for trips with that extra dose of adrenaline. M Track mode and ten-stage M Traction Control enable tailored drivability, the M Drift Analyser and M Laptimer app, which is available separately for Apple iPhone (can be downloaded from the App Store), help you to achieve that perfect lap. * M Drive Professional is available for the BMW M4 Competition Convertible with M xDrive.
Driving Assistant Professional.
Driving Assistant Professional offers optimum comfort and safety during critical or monotonous traffic situations. Apart from the contents of the Driving Assistant, it also includes Steering and Lane Control Assistant with extended functions, Emergency Stop Assistant and Lane Keeping Assistant with active side collision protection.
Intelligent Personal Assistant.
Wouldn't it be incredible if your BMW was also your personal vehicle expert? Communicate with your vehicle using the BMW Intelligent Personal Assistant. Say natural commands to operate numerous vehicle functions. It can also explain topics about your vehicle and helps you to get to know your BMW even better.
TECHNICAL DATA OF THE BMW 4 SERIES CONVERTIBLE M AUTOMOBILES.
BMW M4 Competition Convertible with M xDrive and other models.
Engine power in kW (hp) at 1/min: | 375 (510)/6,250 |
Max. torque in Nm at 1/min: | 650/2,750–5,500 |
Acceleration 0–100 km/h in s: | 3.7 |
Fuel consumption (combined) in l/100 km: | 10.2 |
BMW INDIVIDUAL FOR THE BMW M4 COMPETITION CONVERTIBLE WITH M xDRIVE.
BMW M PERFORMANCE PARTS.
Extra-sporty equipment for the BMW M4 Competition Convertible with M xDrive.
The BMW M4 Competition Convertible with M xDrive impresses visually with its athletic and charismatic design. With the high-quality equipment of BMW M Performance Parts, you further accentuate the motorsport character of the vehicle – for an appearance with maximum dynamic flair.
M Performance front splitter, carbon fibre.
The M Performance front splitter made from 100 percent carbon fibre emphasises the masculine appearance of the vehicle.
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M Performance Air Breather Carbon fibre.
Visual highlight on the side of the vehicle: The M Performance Air Breather is made from premium carbon fibre.
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20"/21" M Performance forged wheel Cross-spoke style 1000 M Frozen Gold Bronze, summer complete wheel set.
20"/21" M Performance forged wheels Cross-spoke style 1000 M in Gold Bronze. Summer complete wheel set with tyre pressure monitor.
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19"/20" M Performance forged wheel Y-spoke style 963 M Frozen Gunmetal Grey, summer complete.
19"/20" M Performance forged wheels Y-spoke style 963 M in Frozen Gunmetal Grey. Summer complete wheel set with tyre pressure monitor.
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M Performance steering wheel Pro.
With corners and angles, it’s perfectly well rounded: The M Performance steering wheel Pro creates that unmistakeable motorsport feeling in the cockpit.
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M Performance interior trims carbon fibre.
The M Performance interior trims are completely made of open-pored carbon fibre. For an individual motorsport look in the vehicle interior.
Go to product SERVICE AND ASSISTANCE FOR THE BMW 4 SERIES CONVERTIBLE M AUTOMOBILES.
BMW SERVICES FOR THE BMW 4 SERIES CONVERTIBLE M AUTOMOBILES.
Service offers and packages for the MW M4 Competition Convertible with M xDrive and BMW M440i xDrive, M440i and M440d xDrive Convertible.
BMW sets the standards in service and is always there for you and your BMW M4 Competition Convertible with M xDrive or BMW M440i xDrive, M440i and M440d xDrive Convertible. With BMW Breakdown and Accident Assistance, our experts are available to you around the clock for emergencies – 365 days a year. Thanks to the innovative BMW Teleservices, your BMW 4 Series Convertible M Automobile automatically notifies your BMW Service Partner of maintenance needs and malfunctions, so they can contact you independently. With BMW Service Inclusive, these and all other services are financially covered for the time period of your choice. Secure more time for the important things in your life: With the wide range of services offered by BMW, you are always on the safe side.
BMW Service Inclusive.
Just let go and concentrate on what really matters – enjoying the sporty drive with your BMW M4 Competition Convertible with M xDrive or BMW M440i xDrive, M440i and M440d xDrive Convertible. With BMW Service Inclusive, you can do just that. With a single one-off payment, you get all included services and maintenance tasks for a period of your choice.
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BMW Teleservices.
With the innovative Teleservices of BMW ConnectedDrive your BMW M4 Competition Convertible with M xDrive or BMW M440i xDrive, M440i and M440d xDrive Convertible helps you to keep a clear head: when maintenance is needed or in case of a malfunction it provides your preferred BMW Service Partner with all relevant vehicle data. Your Service Partner will then contact you to arrange an appointment. So you can rely on a fast and straightforward service and don’t have to think of everything yourself. The only requirement: you have registered your BMW 4 Series Convertible M Automobile online in the BMW ConnectedDrive Portal and have selected a Service Partner. Discover now how BMW Teleservices can bring more convenience to your life.
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BMW Roadside Assistance.
The free BMW Roadside Assistance service is available to all BMW drivers around the clock, 365 days a year. A single call – and our experts are at your service, either on the phone or on the scene if required.
Fuel consumption and CO2 emissions of the BMW 4 Series Convertible M Automobiles.
Fuel consumption and CO2 emissions of the BMW 4 Series Convertible M Automobiles.
BMW M4 Competition Convertible with M xDrive:
Fuel consumption in l/100 km (combined): 10.2
CO2 emissions in g/km (combined): 233–231
BMW M440i xDrive Convertible:
Fuel consumption in l/100 km (combined): 8.4–7.8
CO2 emissions in g/km (combined): 192–177
BMW M440i Convertible:
Fuel consumption in l/100 km (combined): 8.4–7.7
CO2 emissions in g/km (combined): 190–175
BMW M440d xDrive Convertible:
Fuel consumption in l/100 km (combined): 6.6–6.0
CO2 emissions in g/km (combined): 172–157
The information on fuel consumption, CO2 emissions and energy consumption has been determined in accordance with the prescribed measurement procedure VO (EU) 715/2007 in the version applicable at the time of type approval. The figures refer to a vehicle with basic configuration in Germany and the range shown considers optional equipment and the different size of wheels and tires available on the selected model.Further information about the official fuel consumption and the official specific CO2 emissions for new passenger automobiles can be found in the 'New Passenger Vehicle Fuel Consumption and CO2 Emission Guidelines', which are available free of charge at all sales outlets and from DAT Deutsche Automobil Treuhand GmbH, Hellmuth-Hirth-Str. 1, 73760 Ostfildern, Germany and on https://www.dat.de/co2
The values are already based on the new WLTP regulation and are translated back into NEDC-equivalent values in order to ensure the comparison between the vehicles. For vehicle related taxes or other duties based (at least inter alia) on CO2-emissions the CO2 values may differ to the values stated here.