Lorinser makes the C-Class "hot" with 305 HP

Digital revolution renders classic engine tuning more effective than ever

Hot camshafts? In the age of chip tuning, that sounds like a relic of the Eighties. Incorrectly, as there is not much extra power to be gained electronically from a naturally aspirated engine. Mechanical measures continue to be the first choice there, and more effective than ever before in combination with an adjustment of the engine management. One particularly successful example is the C 350 Limousine from Sportservice Lorinser, an almost irresistible temptation for everyone with petrol in their blood: special camshafts and a modified engine control unit kindle here far more fire than the series version of the extremely successful 3.5-litre V6. 305 HP (224 kW) instead of 272 HP (200 kW) are an end result that can be more than seen in a non-charged engine, especially since the fast Mercedes accelerates powerfully with 380 instead of 350 Nm, even at very low RPM. As a result of the tuning measure, the interval between opening the exhaust valve and closing the intake valve becomes bigger. The result is a "hot" overlap, which is where the camshaft modification gets its name from. On the other hand, the Lorinser lowering kit is responsible for the "hot" handling in the bend. An additional bonus in the driving-fun account.

Digital or analogue? Music fans may argue about this point, but not car enthusiasts. Of course, the Lorinser sports exhaust system plays music purely mechanically, and develops such a crescendo when the accelerator pedal is pushed enthusiastically that even eardrums get goosebumps. But the optical charms of the C-Class also easily arouse the desire to own one. Is it the well-designed exhaust tailpipes integrated into the Lorinser rear apron that the sporty roof and rear spoiler soar above? The muscular side sills or the striking front apron? An abundance of details that add up to a fascinating automobile. The model RS 8 matt black 19-inch light-alloy wheels draw attention to themselves as they provide exciting contrasts in combination with the white bodywork colour. An additional stylish alternative is the silver-coloured light-alloy wheel RS 9 from the Lorinser assortment. An offer that repeatedly proves in its totality that the Winnenden customiser won't be losing steam any time soon when it comes down to stirring up passions for automobiles.

[Lorinser]

So what does the C250 Prime Edition get you? In addition to the fancy oilburner, the Prime also has low rolling-resistance tires, some aero tweaks to the exterior, a 6-speed manual gearbox, special power steering that saps less energy and an efficiency monitor that provides feedback to the driver (read: shift light). One of the 5,000 C250 CDI BlueEFFICIENCY Prime Editions will run you the equivalent of about $58,000; no word on US availability.

C 250 CDI BlueEFFICIENCY Prime Edition: Efficiency and driving pleasure on a new plane

Mercedes-Benz is set to launch a completely new diesel engine generation starting in the autumn of 2008. For its world premiere, the Stuttgart-based car manufacturer will unveil a C-Class model with this new four-cylinder engine. In the C 250 CDI BlueEFFICIENCY Prime Edition, this engine produces, with its 2.2 litres of displacement, 150 kW / 204 hp and 500 Nm of torque. The premiere model can accelerate from a standstill to 100 km/h in just 7.0 seconds, on the way to its top speed of 250 km/h. Notwithstanding these exceptional performance figures, the Prime Edition only consumes an average of 5.2 litres of fuel per 100 km (NEDC), with CO2 emissions of 138 g/km. The engine impresses with its eager responsiveness and smoothness of operation, which can make it a sensible alternative to the higher-displacement six-cylinder engines in future.

The Mercedes-Benz C-Class is a great favourite with the public. Since its official market launch on March 31 2007, over 400,000 buyers have opted for a saloon or an estate from this model series. As a result of this, the C-Class has maintained its position as world-wide market leader in its segment. The new C 250 CDI BlueEFFICIENCY Prime Edition adds a further highlight to this successful model series which has already received numerous distinctions. With the new diesel engine, which celebrates its world premiere in this model, Mercedes-Benz shows that frugal consumption and high output - and with them both environmentally-friendly driving and driving pleasure - can be mutually compatible.

Exemplary figures in terms of power output, consumption and emission characteristics

A displacement of 2143 cc, 150 kW / 204 hp, and 500 Nm of torque - these are the engine's key figures. Figures that place this newly-developed four-cylinder diesel engine in the top position among the diesel engines of its class. At the same time, in the C 250 CDIBlueEFFICIENCY Prime Edition, the engine consumes on average just 5.2 litres of fuel per hundred kilometres (NEDC), a value achieved by no other comparable motor car.

Apart from exceptional power output figures, the new powerplant offers significantly improved torque build-up from low engine speeds, compared to its predecessor model. The benefit of this is that in everyday driving situations it enables low-consumption driving at low engine speeds. In addition, the new engine will assume market leadership in terms of untreated exhaust emissions. Already today, it complies with the future EU5 emissions standards and, beyond that, has the potential to comply with the EU6 and BIN5 standards as well.

Exemplary figures in terms of power output, consumption and emission characteristics are achieved by the new engine thanks to the implementation of a whole package of innovative technologies. This includes among other things:

* a maximum ignition pressure of 200 bar,

* fourth-generation common-rail technology with a rail pressure increased by 400 bar to 2000 bar, as well as a new piezo-injector concept with direct nozzle needle control for greater flexibility in injection timing, leading to smoother running of the engine,

* larger, variable oil spray nozzles and variable water pump,

* dual-stage supercharging.

Another design innovation is the camshaft drive positioned at the rear. This way, with a north-south installation design and engine bonnet rising towards the rear, it is possible to comply even better with pedestrian protection regulations.

A promising future for the new four-cylinder diesel engine

For an engine of its displacement, it is exceptionally compact, so that it can be fitted in different installation spaces. Beginning in 2008, this new four-cylinder diesel engine will replace four of the existing diesel engines at Mercedes-Benz. It can be installed either lengthways or crossways in various model series, and several power rating variants will be available. Apart from the C-Class, the engine will also be installed in the E-Class, in the new GLK-Class and in the future E‑Class Coupé. With its impressive output figures, the new engine will replace higher-displacement engines in heavier vehicles, where it will be able to reduce consumption effectively through this "downsizing".

Ingenious fine detail work reduces consumption

In the Mercedes-Benz C 250 CDI BlueEFFICIENCY Prime Edition the new diesel engine is combined with a sporty six-speed manual transmission with overdrive. This, too, contributes to the great efficiency of the model. Furthermore, Mercedes-Benz engineers have drawn up an additional package of measures in order to achieve the most exceptional consumption figures. The package includes among other things:

* aerodynamic finishing touches, with particularly airflow-enhancing exterior-mirror housings as well as smooth underbody cladding;

* newly developed tyres that reduce rolling resistance by 10 percent;

* an efficient energy-management system with adaptive power steering, which with the help of an additional valve, closes the flow of the power-steering pump when it is not required.

Useful information: new gearshift and consumption display on dashboard

Experience from Mercedes-Benz eco-training shows that the driver, too, can save fuel by adopting an energy-conscious style of driving - and also do that without compromising driving pleasure. In the C 250 CDI BlueEFFICIENCY Prime Edition a newly-developed gearshift display on the dashboard assists the driver by informing him of the best moment to shift gear in order to save fuel. In addition to this gearshift recommendation, the instrument cluster shows the precise current fuel consumption.

Sporty genes, state-of-the-art engineering, extensive equipment and appointments

The basis of the new C 250 CDIBlueEFFICIENCY Prime Edition is the C-Class Saloon of the AVANTGARDE equipment line, in which the sporting genes of the Mercedes-Benz brand come particularly to the fore, most noticeably in the radiator grille with its distinctive louvres and the large, centrally positioned Mercedes star. Among car connoisseurs this design element has been seen, for a long time, as a typical badge of the sportier Mercedes models. Now, in the AVANTGARDE models of the C-Class for the first time the star graces a saloon, as an unmistakable expression of the vehicle's inherent strengths: agility, power and performance, without at the same time neglecting other time-tested C-Class attributes such as safety and long-distance comfort. Aluminium interior trim (optional: bird’s-eye maple) and other stylish details accentuate the sporty, effortlessly superior appearance of this model.

The C 250 CDI BlueEFFICIENCY Prime Edition is equipped with 16-inch light-alloy wheels and 205/55 R16 tyres as standard - in addition to this, 16-inch light-alloy wheels in sporty 7-spoke design (likewise 205/55 R16 tyres) and 17-inch light-alloy wheels in 5-twin-spoke design with wide-base tyres (225/45 R17 at front, 205/40 R17 at rear) are available as no-cost options.

Naturally, all the pioneering technical systems of the C-Class are on board as well: for instance, the AGILITY CONTROL package with situation-responsive shock absorber control, the Intelligent Light System with five different lighting functions and the PRE-SAFE® anticipatory occupant protection system.

The extensive standard equipment also includes the Audio 20 infotainment system. This features, among other things, a keypad to enter telephone numbers and radio frequencies, as well as a Bluetooth interface that connects the mobile phone wirelessly with the hands-free feature. Floormats with the lettering "Prime Edition" draw attention to the special status of the new model.

Prime Edition limited to 5000 units

The C 250 CDI BlueEFFICIENCY Prime Edition model can be delivered in obsidian black, palladium silver or iridium silver. It is also optionally available in the special paint finish diamond white metallic. The sporty appearance can be emphasised even more forcefully with the optional AMG sports package, which includes distinctively-styled front and rear aprons as well as side skirts.

Production of the C 250 CDI BlueEFFICIENCY Prime Edition is limited to 5000 units. It is a consummate performer in terms of its sportiness, environmental protection and economic efficiency. Its price (including VAT) is 40,638.50 euros.

[eMercedesBenz]

BRABUS BULLIT BLACK ARROW The Four-Door V12 Biturbo Stealth Super Sports Car With 730 hp (720 hp SAE net), 1,320 Nm (974 lb-ft), 0 - 300 km/h (186 mph) in 24.5 seconds and a Top Speed of More than 360 km/h (225 mph)

Ultra powerful, ultra fast and conspicuously inconspicuous: The four-door stealth super sports car BRABUS BULLIT BLACK ARROW offers performance superlatives like no other car on the market: The basis for the car is the body of the new C-Class sedan, covered with a special matte-black coating. The BRABUS SV12 S Biturbo twelve-cylinder engine was dropped into the engine bay with almost surgical precision. Performance is staggering: 3.9 seconds from rest to 100 km/h (62 mph), 24.5 seconds for 0 - 300 km/h (186 mph) and a top speed of more than 360 km/h (225 mph). BRABUS produces the BULLIT BLACK ARROW in small-series production starting at 348,000 Euros MSRP.

The BRABUS BULLIT BLACK ARROW ensures that the world's fastest sedans continue to come from Bottrop. The BRABUS BULLIT BLACK ARROW follows in the footsteps of the 330-km/h (206 mph) BRABUS E V12 based on the W 210-series Mercedes E-Class, the 350.2-km/h (219 mph) E V12 Biturbo of the new W 211 generation and the world's current fastest sedan, the 365.7- km/h (227.2 mph) BRABUS ROCKET based on the Mercedes CLS.

Numerous modifications to the reinforced body were necessary to install the turbocharged V12 engine in the C-Class engine bay. The BRABUS SV12 S Biturbo engine is derived directly from the BRABUS ROCKET and uses the latest Mercedes S 600 engine that has been completely reworked in the company-own engine building shop.

Nothing beats displacement except even more displacement: A crankshaft with longer stroke, larger cylinder bore, and special pistons and piston rods increase displacement of the twelve-cylinder three-valve engine from 5.5 to 6.3 liters (336 to 385 cu. in.).

Cylinder heads optimized for faster gas exchange and high-performance camshafts also contribute to the increase in power output. They are assisted by a more efficient dual turbocharging system, special manifolds, larger turbochargers and larger intercoolers. Because of space constraints in the C-Class body an entirely new stainless-steel high-performance exhaust system with low back-pressure metal catalysts had to be developed.

The BRABUS motor engineers used state-of-the-art engine test benches to program new mapping for engine electronics and on-board diagnostics. The new mapping ensures optimal power yield while meeting strict EURO IV emission limits.

The BRABUS SV12 S Biturbo displacement engine, lubricated like all BRABUS high-performance engines with ARAL Synthetic motor oil, produces 730 hp (720 hp SAE net) / 537 kW at just 5,100 rpm. The peak torque of 1,320 Nm (974 lb-ft) is limited in-car electronically to 1,100 Nm (811 lb-ft).

Power is transferred to the rear wheels via a reinforced five-speed automatic transmission and a BRABUS limited-slip differential with a locking rate of 40 percent. Customers can choose from two final drive ratios. The BRABUS BULLIT BLACK ARROW features all modern driving dynamics systems such as ABS, ASR and ESP.

The matte-black stealth street rocket delivers unique performance: Just 3.9 seconds pass for the sprint from 0 - 100 km/h (62 mph), 200 km/h (124 mph) is reached after just 10.49 seconds. And after just 24.5 seconds the car shatters the 300-km/h barrier (186 mph). Top speed is more than 360 km/h (225 mph).

At these speeds favorable aerodynamic properties are absolutely essential. The BRABUS BULLIT BLACK ARROW was honed to perfection in the wind tunnel. The BULLIT front apron features large air ducts to supply cooling air for radiators and front brakes. Its sophisticated design further reduces lift on the front axle. Its aerodynamic counterparts in the rear are a three-piece rear spoiler and a rear apron with integrated diffuser. Both front and rear aprons are made from especially light yet highly robust autoclave-baked carbon fiber.

A wider track optimizes directional stability so elementary at speeds beyond 300 km/h. The BRABUS designers have styled aluminum wheel arch flares for front and rear axle. They are seamlessly melded to the production body and add six centimeters (2.4 inches) to the C-Class width. BRABUS rocker panels optimize the airstream along the sides. They also feature integrated entry lights that make entering and exiting the vehicle safer in the dark.

The visual appearance of the BRABUS BULLIT BLACK ARROW is further characterized by the new hood. Its integrated 'gills' are not just distinctive features, they also ensure the engine's thermal health.

The wheel arch flares provide space for especially wide matte-black BRABUS Monoblock S light-alloy wheels with high-performance tires from technology partners YOKOHAMA or Pirelli. The 9.5Jx19 wheels on the front axle are shod with size 265/30 ZR 19 tires. The rear axle is fitted with size 10Jx19 wheels and size 285/30 ZR 19 tires.

The height-adjustable coil-over suspension was developed specifically for the BRABUS BULLIT BLACK ARROW. The gas-pressure shocks feature ten selectable settings each for bound and rebound. They provide a sporty yet comfortable ride and safe handling in any situation. Sport stabilizers reduces body roll to a minimum during fast cornering.

The BRABUS high-performance brake system can handle even the most extreme stress. It features 12-piston aluminum fixed calipers on the front axle that grip vented and grooved 380 x 37 millimeter (15 x 1.46 inches) brake discs. The rear axle stops with 360 x 28 millimeter (14.2 x 1.1 inches) discs and six-piston aluminum fixed calipers.

Exclusive individuality also abounds in the interior of the BRABUS automobile: The standard equipment package includes a fully leather interior hand-crafted in the company-own upholstery shop from the finest Mastik and Nubuk leathers.

The custom BULLIT seats offer a perfect combination of comfort and lateral support. Their carbon-fiber rear covers lend the interior an especially sporty feel. This look is complemented by carbon-fiber components on dashboard, center console and door panels as well as by the ergonomically shaped sport steering wheel and aluminum pedals and shifter.

BRABUS BULLIT BLACK ARROW - Technical Data

Body

4-door sedan based on Mercedes-Benz C-Class, W 204 series

Steel unibody widened with BRABUS fender flares by 60 mm (2.36 inches). BRABUS hood with integrated gills.
BRABUS BULLIT aerodynamic-enhancement kit with BULLIT front and rear bumper manufactured from carbon fiber baked in an autoclave. Rocker panels with integrated entrance lights, three-piece rear spoiler.

BRABUS BULLIT BLACK ARROW with matte-black coating.

Measurements:
Length 4.590 mm 180.7 in.
Width 1.830 mm 72.0 in.
Height 1.402 mm 55.2 in.
Curb weight 1,850 kg 4,079 lbs.

Engine

BRABUS SV 12 S Biturbo displacement engine based on Mercedes 600

V12-cylinder 3-valve light-alloy engine with twin turbochargers
Displacement 6,233 cm³ (380 cu. in.)
Compression ratio 9.0 : 1
Rated power 730 hp (720 hp SAE net) / 537 kW at 5,100 rpm
Peak torque 1,320 Nm (974 lb-ft) from 2,100 rpm (electronically limited to 1,100 Nm - 811 lb-ft)
Fuel: Super plus (98 octane)
Motor oil: ARAL

BRABUS SV 12 S Biturbo engine conversion consisting of:
Displacement increase to 6.3 liters with special crankshaft with longer stroke, enlarged cylinder bore with corresponding larger pistons. Both cylinder heads feature flow-optimized ports and special camshafts. Two high-performance turbochargers with special exhaust manifolds; more efficient intercooling system and BRABUS stainless-steel high-performance exhaust system with low-back-pressure metal catalysts. Newly programmed mapping for engine electronics and on-board diagnostics.

Drivetrain

Rear-Wheel Drive

Reinforced five-speed automatic transmission
Gear ratios:
1st gear 3.59
2nd gear 2.19
3rd gear 1.41
4th gear 1.00
5th gear 0.83

BRABUS locking rear differential with 40 percent locking rate
Final drive either 2.65 : 1 (top speed 315 km/h - 196 mph) or 2.24 : 1 (top speed 350 km/h - 217 mph - electronically limited).

Suspension

Independent suspension front and rear with height-adjustable BRABUS coil-over suspension.

Front axle:
Three-link, anti-dive geometry. Height-adjustable BRABUS struts with coil springs and gas-pressure shocks featuring ten settings each for bound and rebound; BRABUS sport sway bar.

Rear axle:
Five-link, anti-dive and anti-squat geometry. Height-adjustable BRABUS struts with coil springs and gas-pressure shocks featuring ten settings each for bound and rebound; BRABUS sport sway bar.

Wheels:
BRABUS Monoblock S light-alloy wheels with YOKOHAMA or Pirelli high-performance tires.
Front: 9.5Jx19 H2 with 265/30 ZR 19
Rear: 10.0Jx19 H2 with 285/30 ZR 19

Brake System

Dual-circuit brakes with Brake Assist and BRABUS high-performance brake system.

Front: BRABUS 12-piston fixed aluminum calipers with vented and grooved 380 x 37 mm
(15 x 1.46 in.) steel brake discs.
Rear: BRABUS six-piston fixed aluminum calipers with vented and grooved 360 x 28 mm (14.2 x 1.1 in.) steel brake discs.

Performance

0 - 100 km/h (62 mph): 3.9 sec
0 - 200 km/h (124 mph): 10.49 sec
0 - 300 km/h (186 mph): 24.5 sec

Top speed: more than 360 km/h (225 mph)

To our understanding, the increased "perceived performance" means louder exhaust (Cherry Bombs?), and über-quick throttle response. So much for German understatement, huh? We expect a majority of C140 buyers will bolt on AMG rims, buy AMG badges to be placed crookedly on the trunk, and apply fake portholes and/or vents on the front fenders. [Edmunds Inside Line]