The next-generation BMW X5 M has been spied on the Nürburgring.

Set to go on sale as a 2014 or 2015 model, the heavily camouflaged prototype looks pretty composed as it tackles the curves of Germany's famous track. It's hard to discern styling details but we can see the model will have aggressive bumpers, a tailgate-mounted spoiler and a four-tailpipe exhaust system.

Power will likely be provided by the company's twin-turbo 4.4-liter V8. It remains unclear it will have an increased output, but the engine currently develops 555 HP (408 kW) and 680 Nm (502 lb-ft) of torque.

Even if the engine remains untouched, the X5 M should be faster than its predecessor thanks to its new platform which is internally known as "X for All." Boasting lightweight materials, the platform could allow for weight savings of up to 150 kg (331 lbs).

Got a tip for us? Email: