The BMW 535i and 550i haven't even been able to grace the sales floor and already there is news on a new 5 series model itching at the chance to get on board. During a media event this week BMW confirmed that the 5-Series Diesel will also be available on the US market. More than that, Willem Rombauts said that BMW will in fact offer two diesel models on the US market. The 5-Series will definitely be one of them while the second model could be the X5 or X6.

Currently BMW is only offering two diesel models on the US market: the 330d and the X5 xDrive35d, both powered by a twin-turbocharged 3.0-liter inline six-cylinder diesel that generates 265 horsepower and a sinful 425 pound-feet of torque.

The engine's possibilities for a 5-Series diesel model can only be guessed at. We could possibly see one of the straight-6s offered in Europe. Maybe the twin-turbo used in the 3 Series and X5? Maybe a slightly less muscular single-turbo 3.0-liter? Since the diesel variant has yet to receive a solid debut date, we could just be spinning our wheels while BMW works on a more powerful and fuel efficient diesel combination. It would have to beat out the 265-hp and 425 ft-lbs of torque variant it currently has running, but only time can tell what BMW->ke178 may have up their sleeve.

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