Next-gen Mercedes SL to be built on AMG GT platform

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Next-gen Mercedes SL, due in 2019, will be built on the same platform as the Mercedes-AMG GT supercar, in a bid to increase dynamic flair and performance – Autocar reports.

According to insiders at Mercedes-Benz, the AMG GT platform has been confirmed as the foundation for the new SL. The current SL shares its underpinnings with the former E-Class. Of course, the relationship with the AMG GT should  significantly benefit the driving behavior. In addition, the exchange of technology between the two sports cars should reduce the production costs of both the SL and the Mercedes-AMG GT.

The biturbo V8 from AMG GT will logically report for duty in the next Mercedes-AMG SL 63. Now, the top SL uses a 5.5-liter biturbo V8, good for 585 hp. The same power is offered by the AMG GT R courtesy of the much smaller 4.0-liter biturbo V8. The V12 in the SL 65 will quite likely not return. Lower down the range we expect the new 3.0-liter in-line six-cylinder unit (family M256) with mild-hybrid tech and 408 hp or more. This engine combines a conventional turbo with an electrically driven compressor and a 48V electrical system with an Integrated Starter-Alternator (ISG) responsible for hybrid functions such as boost (up to 15 kW), energy recovery, coasting and shifting of the load point.

The move of abandoning the development of a new dedicated platform for the SL (and future SLK) and switch to the current Mercedes-AMG GT architecture follows the decision to hand the lead engineering responsibilities for the new SL to AMG.

Hence, Mercedes’ sports division is already hard at work, developing the upmarket roadster at its Stuttgart headquarters alongside the expanded AMG GT range, set to welcome the addition of a four-door coupe and a Black Series hardcore model.