Mercedes-Benz has followed up the unveiling of the new SL63 AMG with a first look at its big brother, the mighty Mercedes-Benz SL65 AMG at the New York motor show.
The new range topping SL model adopts the aluminium body shell and other weight saving measures of its lesser-engined siblings in a move that has seen its kerb weight slashed by a considerable 170kg to 1950kg.
Under the bonnet resides a mildly reworked version of the old SL65 AMG’s potent twin-turbocharged 6.0-litre V12 engine boasting changes to its inlet and exhaust systems. Power climbs from a previous 603bhp to 621bhp on a band of revs between 4800 and 5400rpm, endowing the plush new two seat roadster with a power to weight ratio of 318bhp per tonne. Torque remains limited to 737lb ft between 2300 and 4300rpm.
Altogether, this represents a 91bhp and 111lb ft increase over the new twin-turbocharged 5.5-litre V8 powered SL63 AMG, or 64bhp and 73lb ft over the SL63 AMG running the optional Performance Package – something that is not offered on the SL65 AMG.