Mercedes-AMG SL43 Has a 389-HP Turbo-Four with F1 Tech

  • The Mercedes-AMG SL43 is an entry-stage design for the most current era of the SL. It is powered by a 389-horsepower turbocharged inline-four.
  • This is the to start with generation motor vehicle to characteristic a turbo with an electric powered motor on the turbocharger shaft that can spin the compressor wheel to minimize lag and preserve increase strain when the driver allows off the gasoline pedal.
  • Mercedes is even now choosing whether it wishes to carry the four-cylinder SL43 to the United States marketplace.

    The new Mercedes-AMG SL43 may possibly be the entry-degree design in the grand tourer’s lineup, but that doesn’t necessarily mean the SL43 is primary. When it has only 50 % as quite a few cylinders as its bigger-overall performance, V-8-run SL55 and SL63 siblings, this model has technology derived from System 1 that promises greater responsiveness from the turbocharged inline-four.


    The SL43’s social gathering piece is a turbocharger with an electric powered motor moreover the common exhaust-gasoline plumbing. This generation-car or truck 1st is fitted to the M139 2.-liter inline-four, the very same motor located in the CLA45 and GLA45 AMG designs. The motor is only about an inch and a fifty percent thick and mounted on the shaft among the turbine wheel and compressor wheel. The total level is that this motor can spin the compressor wheel before the exhaust gases do, cutting down turbo lag, giving a in close proximity to-speedy response when the driver pins the throttle, and keeping raise stress even when the driver allows off the fuel or hits the brakes. This identical technologies is observed in the turbocharged 1.6-liter V-6 hybrids employed by the Mercedes-AMG Formulation 1 workforce.

    mercedes amg sl43


    The four-cylinder engine pumps out a ongoing total of 376 horsepower and 354 pound-ft of torque, although the 48-volt, belt-pushed starter-generator can supply a brief improve of 13 extra horses. The 48-volt set up also enables the SL43 to recoup vitality even though slowing and smoothing out the engine’s start-halt functionality. The M139 is, for the 1st time, mounted longitudinally in the SL43 and connected to a nine-velocity automatic transmission with the AMG-regular moist clutch pack in spot of a torque converter. Mercedes statements the rear-wheel-travel roadster can hit 62 mph in 4.9 seconds on its way to a 170 mph leading pace.

    A handful of minimal visual adjustments distinguish the SL43 from the 55 and 63. The tailpipes are spherical and the rear bumper is simplified, ditching the vents driving the rear wheels. The front bumper is also reshaped, and the SL43 rides on 19-inch wheels as conventional, with optional 20- and 21-inch wheels. The SL43 is not confirmed for the United States, with a Mercedes spokesperson telling Motor vehicle and Driver that the roadster is “is presently nonetheless less than consideration for the U.S. marketplace.” If it does get to our shores, anticipate it to be substantially much less expensive than the SL55, which we estimate will price tag all over $135,000.

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