The Mercedes-Benz R231 is a chassis code for the current generation of the SL-Class roadster, replacing the R230. The car was released in July 2012 and uses Mercedes-Benz's new 4.6 litre V8 engine with a power output of 435 hp. AMG version of the roadster will follow. The new SL is 140 kg lighter than the previous, being made almost entirely out of aluminium.
The vehicle was unveiled in 2012 North American International Auto Show.
Early models include SL 350, SL 500.
The R231 is designed with an aluminium space-frame, 182 inches in length by 83 inches in width. Engineers at Mercedes have also installed a new folding hardtop roof that will have as an option, a panoramic sunroof with a manipulatable tint The design process began in 2007, with a final design by Frank Pfisterer and Mark Fetherston being chosen, delayed for over 2 years, and then approved for production in early 2010. Design patents were filed on August 5, 2009 using a CAD file and in German patents in April 2010 using a prototype
It includes a 5.5-litre V8 'biturbo' engine rated 537 PS @5500rpm and 800 N·m @2000–4500rpm, AMG sports suspension, AMG SPEEDSHIFT MCT 7-speed manual transmission, five-twin-spoke AMG light-alloy wheels in titanium grey with a high-sheen finish with 255/35 R 19 front and 285/30 R 19 rear tyres, front apron with large air dams, AMG-specific LED daytime running lamps and a lower cross strut in silver chrome, AMG radiator grille with a double louvre in silver chrome, optional MAGIC SKY CONTROL Vario-roof, AMG sports seats in single-tone or two-tone nappa leather with a unique V8 seat upholstery layout and AMG badges in the seat backrests, a multicontour function and seat heating; AMG carbon-fibre trim, AMG illuminated door sill panels, ambient lighting and an IWC-design analogue clock.
AMG Performance Package includes increasing engine power to 564 PS @5500rpm and 900 N·m @2250–3750rpm, raising top speed to 300 km/h, carbon fibre AMG engine cover and AMG spoiler lip, AMG rear axle differential lock, red-painted callipers, AMG performance steering wheel in nappa leather/DINAMICA.
Edition 1 model includes AIRSCARF neck-level heating, AMG forged light-alloy wheels (painted matt black, rim flange with a high-sheen, AMG Performance package, designo Exclusive leather in classic red or deep white with contrasting topstitching, designo headliner in black leather, harman/kardon Logic 7 surround sound system, MAGIC SKY CONTROL panoramic vario-roof.
European model went on sale in May 2012 for €157,675, €189,269.50 for Edition 1 car, €14,280 for AMG Performance package.
The vehicle include a bi-turbo V12 engine rated at 630 PS @4800–5400rpm and 1,000 N·m @2300–4300rpm, AMG SPEEDSHIFT PLUS 7G-TRONIC automatic transmission, AMG 5-spoke light-alloy wheels in titanium grey with a high-sheen finish with 255/35 R 19 front and 285/30 R 19 rear tyres, optional MAGIC SKY CONTROL Vario-roof, AMG sports seats with single or two-tone upholstery in Exclusive nappa leather with a special AMG diamond pattern, AMG carbon-fibre trim elements, the IWC-design analogue clock, the chromed AMG door sill panels illuminated in white , the AMG Performance steering wheel, 360 km/h speedometer, AMG start-up display with an exclusive AMG V12 BITURBO animation.
The vehicle was unveiled in 2012 New York International Auto Show.
The German model went on sale in September 2012 for €236,334.
Japan model went on sale on 2012-08-29.
It is a limited version of SL 65 AMG commemorating 45th anniversary of the AMG brand. It included designo magno graphite body colour, "twin-blade" radiator grille with blade-like slats, the surround for the AMG-specific LED daytime driving lights, fins on the wings and the hood, Exterior Carbon-Fibre package, AMG sports exhaust system, AMG Performance Studio multi-spoke forged wheels painted in titanium grey with high-sheen rim flange and matt finish, 255/35 R 19 front and 285/30 R 20 rear tires, designo Exclusive STYLE leather upholstery in grey pearl/ginger beige, AMG Performance steering wheel, matt carbon fibre interior trim.
The vehicle went on sale in September 2012.
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