The BMW X5 is a mid-size luxury crossover SUV sold by BMW since 2000. It is based on the E39 5 Series and features all wheel drive and a line of straight-6 and V8 engines. For non-US models there is a 3.0 L diesel engine.
The history of the X5 begins in the late 1990s, when Chris Bangle drew the first sketches from his Designworks studio in California. In many ways, the current car closely resembles these initial sketches.

In contrast to the Range Rover models, however, the X5 was designed as a sporting car. BMW reportedly worked hard to ensure it was referred to as an SAV (Sports Activity Vehicle) instead of an SUV (Sports Utility Vehicle).
Even though the X5 was a four wheel drive vehicle, BMW chose from the start to route 60% of the engine's torque to the rear wheels, making it feel as close as possible to the company's rear-wheel drive sedans. Many reviewers commented on its road and track "feeling", and as time passed many other manufactures have caught onto this breed of SUV (e.g. Porsche Cayenne).
The X5 has been criticized for having low interior volume for its size - both the smaller BMW X3 and the 5 Series (Touring) have greater interior volume. The next generation X5 is rumored to rectify this problem.


In terms of engines, the X5 got the new 4.4i engine which debuted in the 2002 7-Series. This raised output from 290 to 325 hp (242 kW). Also from April production, a new X5 4.8is was offered (see below), giving the driver 265 kW (355 hp) and making it the 2nd fastest SUV behind the Porsche Cayenne Turbo.
Several new extras were added to the 2004 X5 such as:
+ Soft-boot close feature (the top part of the trunk pulls itself closed)
+ Trailer Stabilization Control
+ Adaptive Headlights (available only with xenon HID headlamps; these swivel with the direction of travel of the car)
+ Soft-boot close feature (the top part of the trunk pulls itself closed)
+ Trailer Stabilization Control
+ Adaptive Headlights (available only with xenon HID headlamps; these swivel with the direction of travel of the car)
Originally announced in the end of 2003 along with the rest of the X5 refresh, the X5 4.8is first started shipping in April 2004. In had a new larger 4.8 L engine (which replaced the 4.6 L engine), and was also later used in the 2005 750i/Li. It also included a slightly modified bodykit (parts of the bottom bumper became painted the body color), 20" wheels, and along with the 4.6is, were the only X5's ever to have a large chrome-tipped exhaust which hid the quad pipes.