What's best? The venerable Mercedes AMG 6.2-litre V8, or the new 5.5-litre biturbo V8? World record drifter and Autocar special correspondent, Mauro Calo, tests the Mercedes C63 AMG and SL63 AMG back-to-back on track to find out. See high-res pics, specs and full reviews of all Mercedes-Benz models at www.autocar.co.uk
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- Mercedes C Class
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