Mercedes reveals SL tweaks

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Mercedes has revealed changes to its SL roadster, including upgrades across the engine range.

The SL450 now has a 2,996cc V6 engine uprated by 34ps to 362ps at 5,500-6,000rpm and 500Nm at 2,000-4,200rpm; and the 4,663cc SL550’s V8 engine produces 449ps at 5,250rpm and 700Nm at 1,800-3,500rpm.

The German manufacturer has also included a new Dynamic Select option, which makes changes to the engine, transmission, suspension and steering setup on demand. Both entry-level roadsters are now offered with 9-speed auto transmission as standard.

The headline engines in the range remain the V8 and V12 biturbo units fitted to the SL63 and SL65 models respectively. The 5.5-liter V8 produces 577ps and 900Nm, while the 6-liter V12 produces 621ps and 1,000Nm of torque. The high power figures contribute to acceleration times from 0-100km/h of 4.1 and 3.9 seconds. Top speed is electronically limited to 300km/h.

Both engines have been designed to maximize power and decrease fuel consumption. In addition to spray-guided Piezo direct fuel injection, the engines feature an all-aluminum crankcase, twin turbocharging, four calves per cylinder with camshaft adjustment, and an air/water intercooler. The 7-speed automatic transmissions found in both cars have also been upgraded to provide faster shifting.

November 24, 2015

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Dean has been with UKi Media & Events for over a decade, having previously cut his journalistic teeth writing and editing for various automotive and engineering titles. He combines extensive knowledge of all things automotive with a passion for driving, and experience testing countless new vehicles, engines and technologies around the world. As well as his role as editor-in-chief across a range of UKi's media titles, he is also co-chair of the judging panel of the International Engine of the Year Awards.

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