Speed freaks, this is the S-Class Cabriolet to get. The S63 comes with AMG’s 4.0-liter biturbo V8, tuned to 603 hp and 664 lb-ft, with a AMG Speedshift nine-speed dual-clutch transmission.
You want straight-line speed? How about 0-60 in 3.4 seconds and a limited top speed of 186 mph.
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