As in BMW's sedans, there's also plenty of opportunity to upgrade the X5 with high-tech options. A new-for-2009 optional diesel engine provides impressive power yet delivers surprising fuel economy.

260.0-hp, 3.0-liter, Straight 6 Cylinder Engine (Gasoline Fuel) Wondering which trim is right for you? Our 2009 BMW X5 trim comparison will help you decide.

As a result, it’s not surprising to see that BMW ... the X5 M50d sounds surprisingly edgy, in a big-diesel kind of way. What the M50d does is straddle the line between a sensible SUV engine ...

265.0-hp, 3.0-liter, Straight 6 Cylinder Engine (Diesel Fuel) Wondering which trim is right for you? Our 2009 BMW X5 trim comparison will help you decide.