Following which, its market-launch will start from Sept 28 onwards and the vehicle will be produced at BMW Plant Munich for customers in Europe, Japan, South Korea, Taiwan, Hong Kong, Australia and New Zealand.
The G21 has been extensively revised over its predecessor as the body becomes 25% more rigid with the Munich-based company adding that in some areas it up to 50% extra.
The station wagon has grown considerably with a 2,851mm (+41mm) wheelbase with wider front 1573mm (+43mm)and rear 1569mm (+21mm) tracks.
At about 1,650kg (kerb), the G21 measures in at 4,709mm-long (+76mm), 1,827mm-wide (+16mm) and 1,440mm-tall (+8mm) while maintaining a 50-50 front-rear weight balance.
But despite its added dimensions, the G21 is up to 10kg (depending on model) lighter than the outgoing model while aerodynamics have been optimised to cut its drag coefficient down to as low as 0.27Cd.
Up front, the more prominent grille is flanked by LED headlights (BMW Lasterlight optional), LED rear lamps and roof rails.
The rear features LED lamps, powered split tailgate with a 20mm-wider window that gives access to the 500-litre (+5 litres) boot with storage compartment for the tonneau cover.
The boot can be further expanded to 1,510 (+10) litres with the 40:20:40 split rear seats folded.
As an optional extra, anti-slip rails and a powered backrest release can be added.
As standard, the G21 gets fitted with an electric power steering system with Servotronic function with a variable sport steering system available as an option.
With 17x 7.5 wheels fitted with 225/50 series tyres, it hides the front aluminium-steel double-joint spring strut axle and rear aluminium-steel five-link axle - both with hydraulically damped torque strut bearings.
An eight-speed Steptronic suspension manages the 2.0-litre (1,998cc) turbocharged petrol engine producing 258hp from 5,000rpm to 6,500rpm and 400Nm of torque from 1,550 to 4,400rpm for the 330i Touring and all-wheel-driven xDrive Touring variants.
The 320d Touring and all-wheel-driven xDrive Touring variant uses a 2.0-litre (1,995cc) turbo diesel engine with 190hp at 4,000rpm and 400Nm of torque from 1,750 to 2,500rpm.
A more potent 330d Touring and xDrive Touring is also available which uses a 3.0-litre (2,993cc) turbodiesel engine that produces 265hp at 4,000rpm and 580Nm of torque from 1,750 to 2750rpm.
Safety-wise, it comes equipped with six airbags, dynamic stability control, anti-lock braking system and dynamic traction control, cornering brake control, dynamic brake control, performance control, dry braking function, fading compensation and start-off assistant.
Optional extras include an adaptive M suspension and an M Sport differential.