The new X4 is part of BMW's SUV programme, which has recently seen a refreshed X3 launched
The front bumper features larger, more aggressively-styled vents than the X3
More than 200,000 X6s have been sold; BMW hopes the X4 will replicate that model's success
A range of four- and six-cylinder petrol and diesel engines will be offered
It is expected to make a debut at the New York motor show in April
An eight-speed automatic gearbox will be fitted as standard
The X4 will form part of a revamped BMW SUV lineup for 2014
BMW is to launch two new SUVs this year - and its M division is also planning two more.
First up is a debut for the production version of the X4 at the New York motor show in April. This more sporting crossover model is to the X3 what the X6 is to the X5. It follows a thinly veiled 2013 concept car of the same name.
A range of four-cylinder and six-pot petrol and diesel engines will be offered, as will an eight-speed automatic gearbox and a variable sports steering system.
Following the X4 will be an all-new X6, reaching the UK in November after a debut at the Moscow motor show in August.
More than 200,000 examples of the first-generation X6 have found homes since it was launched in 2008. The new model is set to build on this success with what insiders claim is a more muscular, sporty and athletic design.
They will use the twin-turbo 4.4-litre V8 engine of the first-gen X5 M and X6 M models but with power and torque increased from the current 547bhp and 502lb ft. Economy and CO2 emissions will also be improved.
Additional reporting by Stuart Milne, 26 February 2014