The new X4’s longer wheelbase adds 27mm of rear leg room over the old car and boot capacity has increased by 25 litres to 525 litres. An optional cargo function allows the back rests of the standard 40/20/40 folding rear seats to be adjusted individually. When they are all folded, the car has a cargo capacity of 1430 litres.
As with the X3, the X4 comes as standard with an eight-speed torque-converter automatic gearbox. It has Steptronic control, with steering-wheel-mounted shift paddles on all but the xDrive20i and xDrive20d.
The automatic gearbox is allied to the latest version of BMW’s electronically controlled xDrive fourwheel-drive system, which is programmed to apportion drive with a rear-wheel bias. It operates in combination with a standard Performance Control function, which provides a torque-vectoring effect by varying the amount of drive sent to each individual rear wheel. Also included as standard is BMW’s Driving Experience Control system. This lets the driver choose between Sport, Comfort and Eco-Pro modes. Higher-spec models also have an extra mode called Sport Plus.
The X4 adopts new double-wishbone front suspension, also seen on the X3, that is claimed to offer a considerable reduction in unsprung masses compared with its predecessor. As standard, all models have M Sport suspension and speed sensitive electro-mechanical Servotronic steering. Wheel sizes range from 18in to 20in. The tyres on 20in wheels are 245/45 front and 275/40 rear.
Although the X4 has been developed primarily for onroad driving, BMW says it has also been engineered to handle mild off-road excursions, with a ground clearance of 204mm and a fording depth of 500mm together with break-over, approach and departure angles of 19.4deg, 25.7deg and 22.6deg respectively.
By comparison, the most basic Pure version of the smaller Evoque has 213mm of ground clearance, a fording depth of 500mm and breakover, approach and departure figures of 22.0deg, 23.2deg and 33.0deg. Like the Evoque, the new BMW also receives Hill Descent Control and Hill Start Assist systems as standard.
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