When it comes to fast cars, Alpina is amongst the top contenders; the German company has now developed the fastest diesel production sedan… And wagon.

With 350 horsepower and 700 Nm of torque, the new D3 Bi-Turbo used in both BMW 3-Series cars will catapult its occupants from zero to 62 mph in 4.6 seconds and on to 173 mph.

And it will do so while returning a UK-rated combined cycle fuel economy of 53.2 mpg (imperial) and CO2 emissions of 139 grams/kilometer.

“What makes these figures even more remarkable is that the D3 Bi-Turbo is also a luxury car that delivers its world-beating performance alongside uncompromising comfort and refinement,” comments Matthew Stripling, Sales Manager at Alpina GB. “The new six cylinder D3 has a wonderful bespoke feel that touches all the senses to make every journey a pleasure, whether commuting to work or powering through the mountains.”

Based on BMW’s latest generation 3-Series, the D3 Bi-Turbo is the result of a two year development program during which every aspect of the vehicle was analyzed and refined to increase performance, comfort and style.

Using design and validation processes identical to those implemented by BMW, Alpina said its team of 50 development engineers worked with specialist suppliers to enhance the engine, gearbox, cooling system, body structure, wheels, tires, aerodynamics, suspension and interior.

The BMW Alpina D3 Bi-Turbo is available in Europe in sedan or Touring (station wagon) and includes an eight-speed automatic gearbox, Adaptive M Sport Suspension, leather upholstery, electrically adjustable heated sports seats, climate control and Bi-Xenon headlights.

Alpina said inside are subtle Alpina logos on the seat backs and door sills. The instruments are in Alpina Blue and the steering wheel is covered in hand-stitched Lavalina leather.

Outside, the new D3 Bi-Turbo receives subtle aerodynamic enhancements developed, said Alpina, in BMW’s wind tunnel; a four outlet exhaust with an ‘intelligent’ acoustic valve, and 19” Alpina alloy wheels in the company’s famous Classic design. Every car is finished with a model plaque displayed on the centre console, showing the car’s unique build number.

In addition to being available with all BMW options including those from BMW Individual, the D3 Bi-Turbo can receive almost limitless personalization from Alpina’s craftsmen. Alongside the famous Alpina Blue and Alpina Green signature paint, choices include hand-stitched full leather interiors and a wide range of hand-finished woods for the dashboard and doors.

Alpina has worked closely with BMW since 1961, with shared warranty coverage since 1964. The company was registered as an automobile manufacturer to ISO standards in 1983.

No words yet on North American availability.