Automotive

Alpina claims "fastest series production diesel" mantle with new D5 S

The Alpina D5 S is available in sedan or wagon form 
The Alpina D5 S is available in sedan or wagon form 
View 21 Images
The Alpina D5 S is available in sedan or wagon form 
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The Alpina D5 S is available in sedan or wagon form 
The D5 S is the fastest production diesel in the world 
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The D5 S is the fastest production diesel in the world 
Alpina takes a unique approach to delivering its performance 
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Alpina takes a unique approach to delivering its performance 
The D5 S Touring has air suspension on the rear axle 
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The D5 S Touring has air suspension on the rear axle 
The D5 S will debut at the Frankfurt Motor Show 
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The D5 S will debut at the Frankfurt Motor Show 
The tri-turbo engine in the D5 S delivers its boost in two stages
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The tri-turbo engine in the D5 S delivers its boost in two stages
The D5 S sedan on the move 
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The D5 S sedan on the move 
The low, square-edged Alpina splitter on the D5 S is a company staple 
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The low, square-edged Alpina splitter on the D5 S is a company staple 
The Alpina D5 S is the fastest diesel car in the world 
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The Alpina D5 S is the fastest diesel car in the world 
The D5 S will be on display at the Frankfurt Motor Show 
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The D5 S will be on display at the Frankfurt Motor Show 
The D5 S rides on 20-inch wheels 
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The D5 S rides on 20-inch wheels 
The D5 S is powered by a three-liter inline six 
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The D5 S is powered by a three-liter inline six 
Alpina wants to make the D5 S feel rev-happy 
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Alpina wants to make the D5 S feel rev-happy 
The D5 S has quad exhaust pipes 
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The D5 S has quad exhaust pipes 
The D5 S has become the quickest diesel car in the world 
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The D5 S has become the quickest diesel car in the world 
The D5 S breathes through big new air intakes 
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The D5 S breathes through big new air intakes 
Much time has been dedicated to keeping the D5 S cool 
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Much time has been dedicated to keeping the D5 S cool 
The Alpina D5 S is a diesel bahnstormer 
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The Alpina D5 S is a diesel bahnstormer 
The Alpina D5 S rides on unique 20-inch wheels 
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The Alpina D5 S rides on unique 20-inch wheels 
The D5 S rides on 20-inch wheels 
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The D5 S rides on 20-inch wheels 
The D5 S Touring has quad exhaust pipes 
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The D5 S Touring has quad exhaust pipes 

Alpina takes a unique approach to performance. Rather than sacrificing itself at the altar of handling, the tuning house takes a more relaxed approach, putting comfort before hot-lap dominance. The latest product of that formula is the BMW 5 Series-based D5 S, the fastest diesel production car in the world.

At the core of the D5 S is a three-liter inline-six diesel engine, tuned to feel rev-happier than the average diesel engine. Most do their best work low in the rev range, delivering big slugs of torque with little fanfare, so delivering a diesel that wants to chase the redline is no easy task.

The D5 S offers peak power of 388 hp (285 kW) between 4000 and 5000 rpm, and peak torque of 800 Nm (1,328 lb-ft) is on tap between 1,750 and 2,650 rpm. The sprint from 0-100 km/h (62 mph) is dealt with in 4.4 seconds, and the 286 km/h (178 mph) top speed elevates the D5 S to world's fastest diesel status.

This performance is, according to Alpina, down to a combination of clever air intakes, two-stage management of boost from the engine's three turbochargers and a high-performance cooling system. Along with the large volume coolers and indirect intercooler, there are three external coolers and a dedicated gearbox oil cooler to make sure things stay cool at full noise. Not that owners are likely to care, the car sips just 6.6 l/100km (36 mpg) on the combined cycle.

Much time has been dedicated to keeping the D5 S cool 
Much time has been dedicated to keeping the D5 S cool 

To make sure all that clever diesel engineering doesn't turn the D5 S into a beautifully built missile at speed, Alpina has borrowed the chassis from the B5 Bi-Turbo and adapted it for the diesel. Adaptive dampers developed by Bilstein are standard fitment, and stiffer springs help lower the center of gravity for sharper changes in direction. The D5 S Touring comes with rear air springs, designed to keep the same ride height when the boot is loaded up.

Depending on the option boxes ticked, the car can be optioned with rear-wheel steering for sharper low-speed handling and a more stable ride at high speed. Included with the rear-wheel steering system is roll stabilization, capable of actively stiffening the suspension for a flatter ride through the corners. The standard xDrive all-wheel drive system has a distinct rear bias, and allows the driver to get a little bit sideways with stability control turned off.

From the outside, the D5 S is unmistakably an Alpina. The low, squared-off front splitter is a staple of the company's design, while the forged 20-inch wheels help save weight and look predictably gorgeous. Down back, you get quad exhaust pipes and a body-colored diffuser to differentiate the car from regular BMW models. You also get unique readouts for the digital driver display, and there's a multitude of stitching options for the rich leather seats. If you have enough time and money, essentially any combination of colors, materials and dashboard trim finishes is available.

Pricing for the D5 S will start at €87,900 (US$106,000). The car will debut at the Frankfurt Motor Show, which kicks off next week.

Source: Alpina

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