2013 Mercedes-Benz CLA 45 AMG
A glance at the technical data for the CLA 45 AMG shows: the AMG 2.0-litre turbo engine, with a maximum output of 265 kW (360 hp) and up to 450 Newton metres of torque, is the most powerful turbocharged four-cylinder engine in series production anywhere in the world.
The combination of high performance and torque, together with the performance-oriented AMG 4MATIC all-wheel-drive system, gives the CLA 45 AMG driving characteristics almost on a par with those of a sports car. The performance coupé accelerates from zero to 100 km/h in 4.6 seconds and its top speed is 250 km/h (electronically limited). But the AMG 2.0-litre turbo engine is impressive not only in terms of its dynamic performance but also with regard to its efficiency and environmental compatibility. The CLA 45 AMG achieves a fuel consumption level of 6.9 litres per 100 kilometres according to NEDC combined figures, while it already meets the EU6 emissions standard that only comes into effect in 2015 as well as the limit for the particle count per kilometre of 6 × 1011 part./km that will become mandatory in 2017.
The basis for these impressive figures is provided by the high-tech package which has been put together by Mercedes-AMG. As a high-performance engine belonging to the BlueDIRECT family, the four-cylinder turbo engine features spray-guided direct petrol injection via piezo injectors positioned centrally in the four combustion chambers. The combination of multiple fuel injection and multiple spark ignition improves fuel utilisation and increases thermodynamic efficiency substantially, leading to lower exhaust emissions. Other highlights include the gravity-die sandcast all-aluminium crankcase, weight-optimised crank assembly with forged steel crankshaft and forged pistons with friction-optimised piston rings, NANOSLIDE cylinder wall technology, air-water charge air cooling, generator management and ECO start/stop function.
The drive package on board the new CLA 45 AMG is a demonstration of high-end engineering prowess. The AMG SPEEDSHIFT DCT 7-speed sports transmission is directly flange-mounted on the transversely installed engine. Key software modules have been adopted from the SLS AMG super sports car with its inspirational power transmission concept. The dual clutch transmission of the CLA 45 AMG features seven gears, three driving programmes, a double-declutching function and RACE START for optimum acceleration. The strengths of the AMG DCT sports transmission include spontaneous gear shifting without any interruption in tractive power, a tailor-made control strategy, extremely smooth and easy gear shifting and a high level of efficiency. Reinforced gear wheels provide for maximum stability. Synchroniser rings with carbon-fibre friction linings improve durability while also optimising the response time during manual gear-changing.
The CLA 45 AMG comes as standard with AMG light-alloy wheels fitted with 235/40 R 18 tyres.
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