See also:

Twin-scroll turbocharging
The new four-cylinder engines also feature twin-scroll turbocharging. This means that the exhaust stream from cylinders 1 and 4, and the exhaust stream from cylinders 2 and 3, follow separate spir ...

EXTERIOR
It's only fitting that a crossover with such performance prowess has such a chiseled, athletic figure. Despite its considerable size, the X5 looks fit and trim. Unmistakably a BMW, the X5 has the ...

Tachometer
Always avoid engine speeds in the red warning field. In this range, the fuel supply is interrupted to protect the engine. ...