Two years after the launch of the first BMW M GmbH High Performance models for the BMW X3 Sports Activity Vehicle and the BMW X4 Sports Activity Coupé, the BMW M variants of the SAV and SAC for the mid-size segment are now undergoing a comprehensive refresh. In addition to new design features drawn from the BMW X3 and BMW X4, which have likewise been revised, along with M specific changes and a new operating concept, the new BMW X3 M Competition and the new BMW X4 M Competition also offer increased pulling power. The maximum torque of the 375 kW/510 hp in-line 6-cylinder engine, which has been increased by 50 Nm to 650 Nm, enables a 0.3-second improvement in the standard sprint from 0 to 100 km/h for example, which the BMW X3 M Competition and the BMW X4 M Competition now complete in 3.8 seconds. The market launch of the new models is due to start in August 2021.
Increased torque for the high-performance engine
BMW M GmbH previously developed the in-line 6-cylinder engine of the BMW X3 M Competition and the BMW X4 M Competition from scratch for the SAV and the SAC in 2019. The most powerful in-line 6-cylinder petrol engine built by BMW with an output of 375 kW/510 hp - now also used in other BMW M models - currently delivers a maximum torque level of 650 Nm in the very latest, further optimised version for the BMW X3 M Competition and BMW X4 M Competition, an increase from the previous 600 Nm, and this torque is available between 2,750 and 5,500 rpm. Peak output is reached at 6,250 rpm and is maintained up to the maximum engine speed of 7,200 rpm. The power unit features not only the high-revving characteristics typical of M and M TwinPower Turbo technology but also racetrack-proven cooling and oil supply concepts. The 3.0-litre engine offers unmistakable performance characteristics with typical M linear power delivery and a high level of revving power that runs right through to maximum engine speed. This power goes hand in hand with a striking sound. Sophisticated M TwinPower Turbo technology and the use of two petrol engine particulate filters and four catalytic converters help the high-performance engines achieve outstanding efficiency and an exemplary emissions response.
High-revving, powerful and efficient
The in-line 6-cylinder engine in the BMW X3 M Competition and BMW X4 M Competition now features the forged lightweight crankshaft of the BMW M3 and M4 models. Its extremely torsion-resistant design enables transmission of the particularly high torque, while its low weight and reduced rotating masses also benefit the engine's revving power. The crankcase is extremely rigid due to a so-called closed-deck design, enabling high combustion pressure and optimised power output. The iron coating of the cylinder barrels applied by means of wire arc spraying reduces weight and friction loss, while the cylinder head also has a core that is manufactured by means of 3D-printing-. This additive manufacturing process allows geometric shapes to be created that cannot be realised using conventional metal casting methods. As a result of 3D printing technology, the cylinder head core has a reduced weight and a coolant duct layout which is optimised in terms of temperature management. M TwinPower Turbo Technology comprises two mono-scroll turbochargers that supply compressed air to cylinders one to three and four to six respectively.
Here, the power output is further improved by means of compressors and indirect charge air cooling supplied by a low-temperature circuit. Flow-optimised intake air routing ensures low pressure loss, while an electrically controlled and therefore quickly closable wastegate enhances responsiveness. The wide-opening wastegate also supports the effect of the catalytic converters positioned close to the engine. With a maximum injection pressure of 350 bar, the High Precision Injection system for petrol direct injection enables particularly efficient fuel mixture preparation. Fine atomisation of the fuel in the combustion chambers ensures an optimised emission response, especially under full load when accelerating and at high speeds. The technology package is rounded off with the variable valve control system VALVETRONIC and the continuously variable camshaft adjustment system double VANOS.
Driving Assistant Professional available for the first time
The new BMW X3 M Competition and the new BMW X4 M Competition come with all the modern driver assistance systems of the BMW X3 and BMW X4. In addition to Driving Assistant, which includes the lane change and lane departure warning function, rear cross-traffic alert and the traffic sign recognition function Speed Limit. Info including No Passing Indicator, Driving Assistant Professional is available as an option for the first time. This includes Active Cruise Control with Stop & Go-function usable up to 210 km/h with improved functionality in city traffic, right-ofway warning, intersection warning with additional city brake function and the avoidance manoeuvre assistant, which now also reacts to pedestrians and cyclists.
Other features include the emergency stop assistant, emergency lane assistant, steering/lane guidance assistant with extended functions, lane change assistant, lane keeping assistant with active side collision protection, automatic Speed Limit Assist, front cross-traffic alert and wrong way alert. The 3D environment visualisation in the instrument cluster provides an overview of which Driving Assistant Professional assistance systems are activated and what functions they offer. The optional Parking Assistant now includes the reverse assistant, which takes over steering when manoeuvring backwards along a 50-metre line that was last travelled forwards. Parking Assistant Plus uses Park View, Panorama View and 3D Top View to create a 360-degree-image of the vehicle and its surroundings. In addition, the driver can have a three-dimensional live image of their vehicle and its surroundings transmitted to their smartphone by means of Remote 3D View.
Numerous comfort options available
The new BMW X3 M Competition and the new BMW X4 M Competition offer numerous comfort options as standard or as optional extras. The M sports seats with their pronounced bucket seat character are heatable, electrically adjustable in many cases and can be fitted with active seat ventilation. A heated steering wheel and heated rear seats are available to go with the standard 3-zone automatic air conditioning. The range of ambient lighting functions has been expanded, while the Ambient Air package scents the interior and cleans the air by means of simultaneous ionisation. The tailgate can be opened and closed without touching using the comfort access function, and the BMW Display Key uses its 2.2-inch touch display to provide information on fuel level, range and service and maintenance due, as well as indicating whether windows and the optional sunroof are closed.
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