Based on the same platform as the Model S saloon, it will enter production at the Tesla factory in Fremont, California, in 2014.
By fitting the flat battery pack under the floorpan, Tesla has managed to maximise interior space with space for seven adults seated in three rows. The Model X's signature though will be its innovative double hinged falcon doors, which open upwards electrically and fold, allowing them to be used in tight parking spaces.
The doors also allow you to stand in the second row while fitting child seats, plus the second row slides forward to allow easy access to the rear. The sleek exterior styling, with its coupe-like roofline looks neat and streamlined, just like the Model S, while the interior features the same huge 17-inch touchscreen.
Available with a 60 or 85kWh battery, it will offer a similar range to the Model S - up to around 300 miles on a single charge - which Tesla claims a 0-62mph time of under five seconds. By duplicating a smaller version of the drive unit on the front axle, four-wheel drive will be offered as an option.
Prices for the Model X will be similar to an equivalent Model S, so expect to pay between £45,000 and £55,000 when RHD versions go on sale next year. According to a Tesla source, sales of the Model S are going well with 13,000 orders already taken, putting the company on track to hit its target of 20,000 units in 2013.
Our source also confirmed that a smaller BMW 3 Series rival is under development, and will go on sale in 2016. Based on a new third-generation platform, Tesla is targeting a starting price of $30,000 (£19,000).