Road Test

Road Test: 2011 Mercedes-Benz CLS 63 AMG

Although there still is the same 63-badging in the tailgate, this new CLS AMG has a completely new engine. The new powerhouse has eight-cylinders like its predecessor, but otherwise the engine is completely new. Engine’s displacement is just 5.5-litres, or 5461 cubic centimetres to be exact. That is 747cc less than the previous, 6208cc engine. The other major difference is that while the previous 6.2-litre V8 was naturally aspirated, this new V8 is turbocharged. The two exhaust gas turbochargers are located next to the cylinder banks to supply the eight cylinders with fresh air. Under full load, when running at maximum speed of 185 000rpm, the two turbochargers force 1750 kg of air into the combustion chambers per hour.

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