Mercedes-Benz C-Coupé DTM

The Mercedes-Benz AMG C-Coupé DTM is a Touring car (DTM) constructed by the German car manufacturer Mercedes-Benz. It is the successor to the Mercedes-Benz C-Klasse which was permanently retired after the 2011 season. The AMG C-Coupé DTM is based on the Mercedes-Benz C-Coupé. Mercedes-Benz chose the IAA International Motor Show in Frankfurt to present the new 2012 DTM AMG Mercedes C-Coupé. The new car is the successor to the AMG Mercedes C-Class, which scored 84 victories in 156 races to become the most successful vehicle in the 27-year history of the DTM. HWA AG began development, design and construction of the DTM AMG Mercedes C-Coupé in June 2010. The first chassis was assembled in June 2011, with the first vehicle completed in August.

The DTM AMG Mercedes C-Coupé was designed to meet the new and improved safety concept for 2012, which includes a state-of-the-art carbon fibre monocoque and a roll cage made of high strength steel. In order to improve driver protection in the event of an accident, all safety-related components such as the fire extinguishing system and fuel tank have been incorporated into the monocoque. Furthermore, each vehicle is equipped with six crash structures to give the driver additional protection to the front, rear and sides. These carbon fibre crash structures are designed to gradually absorb impact energy, so that the driver is not exposed to high deceleration forces.

The new safety concept was developed jointly by rights holder and promoter ITR e.V., the DMSB and the three manufacturers – Audi, BMW and Mercedes-Benz. In order to verify the performance of the DTM safety concept, the DMSB developed a test programme, which was carried out and analyzed by DEKRA, the independent testing organization. All tests were completed without any problems.

The new DTM AMG Mercedes C-Coupé is based on the latest Mercedes-Benz C-Class Coupé, which celebrated its world premiere in summer 2011. The C-Class Coupé rounds off Mercedes-Benz best-selling range and is offered with a choice of five engines – two diesel and three petrol units – developing from 115 kW (156 hp) to 225 kW (306 hp). The C-Class Coupé is manufactured at the Mercedes-Benz plant in Bremen. It’s the fourth model to be built on a single production line alongside the saloon and estate versions, plus GLK – a new production method for Daimler.

Chassis

The Mercedes-Benz C-Coupé DTM was built to supersede the Mercedes-Benz C-Class race car, a chassis was made directly connected to the carbon fibre monocoque is a roll cage of high-strength steel; CFRP crash elements on the side, front and rear.

Weight

At the beginning of the 2012 season, homologation rules for DTM cars were changed, an increase in minimum weight from 1050 kg to 1110 kg was mandated.

Engines

Unlike most racing cars competing in the DTM Touring Cars, the C-Coupé is powered by a Naturally-aspirated engines and 2xDOHC camshafts. The engine itself is a 4.0 L V8 made of four valves per cylinder, air restricted to 2 x 28 mm by regulations, 90 degree V-angle. Mercedes-Benz C-Coupé DTM car has power output approximately 500 hp (373 kW; 507 PS) and torque 500 N⋅m (370 ft⋅lbf). Mercedes-Benz C-Coupé DTM's engine position is front engined. Mercedes-Benz C-Coupé DTM engine is Fuel injected delivery and has 9,000 rpm rev.

Specifications

Mercedes-Benz C-Coupé DTM (2013) Specifications
Chassis and running gear
Frame type:	Directly connected to the carbon fibre monocoque is a roll cage of high-strength steel, CFRP monocoque with integrated fuel tank, CFRP crash elements on the side, front and rear
Suspension:	H&R independent suspension front and rear, double wishbone suspension, pushrod system with spring-damper unit, adjustable gas pressure dampers
Brakes:	AP Racing hydraulic dual-circuit braking system, monoblock light metal brake calipers, ventilated carbon fiber brake discs, front and rear, brake force distribution between front and rear continually adjustable by the driver, electromagnetic starting valve
Steering:	Servo-assisted rack and pinion steering
Dimensions, weight and fuel capacity
Length:	4,650 mm (183 in) excluding rear wing; 5,010 mm (197 in) including rear wing
Width:	1,950 mm (77 in)
Height:	1,150 mm (45 in) measured from identical reference plane
Wheelbase:	2,750 mm (108 in)
Front axle track width:	1,645 mm (65 in)
Rear axle track width:	1,620 mm (64 in)
Max axle track width:	1,950 mm (77 in)
Weight:	1,110 kg (2,447 lb), including driver in accordance with DTM regulations
Fuel capacity:	120 L (32 US gal; 26 imp gal), in accordance with DTM regulations
Engine
Engine type:	Naturally aspirated, 32-valve, air restricted to 2 x 28 mm by regulations, 2xDOHC, four valves per cylinder
Displacement:	4,000 cc (4.0 L; 244.1 cu in)
Pistons:	Mahle
Spark plugs:	Bosch
Ignition:	Bosch CDI
Battery:	Bosch 12 volts
Fuel:	Aral Ultimate 102 RON
Fuel System:	Fuel injection
Lubrication system:	Petronas Syntium dry sump
Exhaust system:	Three way catalytic converter
Maximum power:	Around 460 hp (343 kW)
Maximum torque:	Approx. 500 N⋅m (370 ft⋅lbf)
Maximum speed:	In excess of 168 mph (270 km/h)
Weight:	148 kg (326 lb)
Transmission
Type:	Hewland sequential semi-automatic 6-speed sport gearbox paddle shift (controlled DTM standard)
Primary drive:	Gear
Clutch:	4-plate ZF CFRP clutch
Differential:	Adjustable multi-plate limited-slip differential
Drive shafts:	Constant-velocity tripod slip-joint shafts
Drivetrain:	Rear-wheel drive
Electronics
ECU Vendor:	Bosch
ECU Model Number:	Motronic MS 5.1
Display instrumentation:	Bosch DDU 8 Monochrome LCD Motorsport Display with mounted dash
Wheels and Tyres
Type:	Radial slick dry and treaded rain
Supplier:	Hankook Ventus
Front tyre dimensions:	300/680 – R18
Rear tyre dimensions:	320/710 – R18
Wheel rims:	AMG forged aluminium wheels
Front wheel dimensions:	12 x 18 inches
Rear wheel dimensions:	13 x 18 inches

External links

• Mercedes-Benz C-Coupé DTM Car Specifications