Signature BMW driving pleasure and sporting elegance brought together with modern functionality: The new BMW 4-Series Gran Coupé is poised to build on the success of its predecessor with this blend of qualities plus well-conceived enhancements to its inherent attributes and product substance. Like its freshly updated BMW 4-Series siblings, the third body variant in the range also makes its mark with notably improved driving dynamics, sharper looks following the brand’s new design language, a refined premium ambience in the cabin and a wide array of innovations in the areas of control/operation and connectivity. Four doors, five full-size seats, a large, wide-opening tailgate and a versatile luggage compartment also help to ensure the new BMW 4-Series Gran Coupé retains its characteristic strengths in both everyday driving and on longer trips. The second generation of the BMW 4-Series Gran Coupé takes on an even more autonomous identity. It is based on the technical underpinnings of the new BMW 4-Series Coupé. A far broader set of characteristics now distinguishes it from the BMW 3-Series range compared with the outgoing model, in terms not only of design, but also dynamic performance. The car’s aerodynamics and the rigidity of the body and chassis mountings have undergone rigorous optimisation, while bespoke tuning of the chassis technology promises a sporty and emotionally rich driving experience.
The latest-generation models in the BMW 4-Series range stand out as premium midsize vehicles with distinct characters all of their own. Their even greater dynamic prowess and exclusive aura are the fruit of measures to sharpen their profile and clearly distinguish them from the BMW 3-Series Sedan that served as the technological blueprint. Like its siblings, the new BMW 4-Series Gran Coupé proudly proclaims this individual positioning with its exterior design. Its dynamically stretched silhouette, four doors, distinctive proportions, flowing roofline and the clean-cut, reduced surface design in the new BMW styling language exude coupé-style elegance, supreme sporting flair and an air of functionality specific to this model. Moving inside the new 4-Series Gran Coupé, these harmoniously combined qualities are brought to the fore most notably by the driver-centric cockpit design and the impressive spaciousness in the rear. The five seats – with standard folding head restraints in the rear – feed into a premium ambience brimming with elegance and modernity, one whose high-quality materials and precision workmanship represent a convincing proposition.
The standalone Gran Coupé body concept results in a versatile interior offering generous amounts of space in the rear, where occupants will find three full-size seats awaiting them and considerably more legroom and headroom than in both the outgoing model and the new BMW 4-Series Coupé. The new BMW 4-Series Gran Coupé offers 470 litres of boot space, the primary capacity in the directly viewable area of the boot having grown by 39 litres. Load space can be expanded to a maximum of 1,290 litres by folding down the sections of the rear backrest, with its standard 40 : 20 : 40 split. The standalone character of the new BMW 4-Series Gran Coupé is rounded off by the modern functionality of its overall concept. Measuring 4,783 millimetres in exterior length, 1,852 millimetres in width and 1,442 millimetres in height, it has dynamic coupé proportions. It is 143 millimetres longer, 27 millimetres wider and 53 millimetres taller than its predecessor, while the track widths have also grown – to 1,595 millimetres at the front (+50 mm) and 1,623 millimetres at the rear (+29 mm). This is also an increase on the track widths of the new BMW 3-Series Sedan of 6 and 19 millimetres respectively. The wheelbase of 2,856 millimetres is 46 millimetres longer than the predecessor’s and 5 millimetres more than the figure for the 3-Series Sedan.
The engines fitted in the new BMW 4-Series Gran Coupé are all members of the current Efficient Dynamics family, the latest BMW TwinPower Turbo technology and the introduction of mild hybrid technology with a 48V starter-generator bringing notably more verve and efficiency than its predecessor. Spearheading the model range is the new BMW M440i xDrive Gran Coupé, which has an immensely powerful six-cylinder in-line petrol engine under its bonnet. The new BMW 4-Series Gran Coupé will also be available with a choice of two four-cylinder petrol units and a four-cylinder diesel from launch. The exhaust gas aftertreatment technology has also been improved, as a result of which all model variants comply with the Euro 6d emissions standard. The trio of petrol engines available for the new BMW 4-Series Gran Coupé feature a twin-scroll turbocharger, a High Precision Injection system whose maximum pressure has been upped from 200 to 350 bar, VALVETRONIC fully variable valve timing and Double-VANOS variable camshaft timing, along with cooling and oil supply systems that are now more efficient. Petrol particulate filters have been added to improve their system of emission control.
The six-cylinder in-line unit powering the BMW M440i xDrive Gran Coupé was developed with the race track expertise of BMW M GmbH and comes with weight-optimised pistons and con rods as well as a twin-scroll turbocharger with indirect charge air cooling. It generates maximum output of 275 kW/374 hp from its 3.0-litre displacement with torque peaking at 500 Nm (369 lb-ft). The resulting flow of muscle power enables the car to race from 0 to 100 km/h (62 mph) in 4.7 seconds. These bursts of speed are accompanied by the distinctive sound produced by the standard M Sport exhaust system. The BMW M440i xDrive Gran Coupé posts combined fuel consumption as calculated in the WLTP test cycle of 8.5 – 8.0 l/100 km (33.2 – 35.3 mpg imp), equating to CO2 figures of 193 – 181 grams per kilometre. Upgraded BMW TwinPower Turbo technology has also enhanced the performance characteristics of the 2.0-litre four-cylinder petrol engines. The more powerful of the duo has an exhaust manifold integrated into the cylinder head for the first time, resulting in extremely effective exhaust cooling for even cleaner emissions. It generates maximum output of 180 kW/245 hp and peak torque of 400 Nm (295 lb-ft), enabling the new BMW 430i Gran Coupé to accelerate to 100 km/h (62 mph) from rest in 6.2 seconds. The engine’s optimised efficiency levels result in combined fuel consumption of 7.6 – 6.8 l/100 km (37.2 – 41.5 mpg imp) and emissions figures of 173 – 156 grams per kilometre in the WLTP cycle.
Two-stage turbocharging and updated common-rail direct injection technology endow the 2.0-litre diesel unit in the BMW 420d Gran Coupé and BMW 420d xDrive Gran Coupé with superior pulling power and efficiency. The engine produces output of 140 kW/190 hp and maximum torque of 400 Nm (295 lb-ft). The instantaneous flow of power results in 0 to 100 km/h (62 mph) sprint times of 7.3 seconds for the new BMW 420d Gran Coupé and 7.6 seconds for the new BMW 420d xDrive Gran Coupé. The two models post combined fuel consumption and CO2 figures in the WLTP test cycle of 5.4 – 4.8 l/100 km (52.3 – 58.9 mpg imp) and 141 – 126 grams per kilometre (BMW 420d Gran Coupé) and 5.7 – 5.1 l/100 km (49.6 – 55.4 mpg imp) and 150 – 133 grams per kilometre (BMW 420d xDrive Gran Coupé). Mild hybrid technology has been included with the straight-six petrol engine as well as the diesel unit to sharpen power delivery and optimise efficiency. Here, a 48V starter-generator acts likes an electric drive unit that assists the engine, allowing it to operate within an efficiency-optimised load range as frequently as possible. It also offers the driver an electric boost effect that can instantly put an extra 8 kW/11 hp on tap to give the power unit even sharper response when accelerating off the line or putting in a quick burst of speed. The power used for the electric boost drive is harvested almost entirely through Brake Energy Regeneration and stored in a separate battery that also supplies the electric energy for the 12V on-board power supply, enabling exceptionally efficient operation of the electric consumers in the new BMW 4-Series Gran Coupé.
