Mercedes-AMG SL43 Has a 389-HP Turbo-4 with F1 Tech

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  • The Mercedes-AMG SL43 is an entry-level mannequin for the most recent technology of the SL. It is powered by a 389-horsepower turbocharged inline-four.
  • This is the primary manufacturing automobile to function a turbo with an electrical motor on the turbocharger shaft that may spin the compressor wheel to scale back lag and keep enhance strain when the motive force lets off the gasoline pedal.
  • Mercedes continues to be deciding whether or not it desires to carry the four-cylinder SL43 to the United States market.

    The new Mercedes-AMG SL43 stands out as the entry-level mannequin within the grand tourer’s lineup, however that doesn’t imply the SL43 is fundamental. While it has solely half as many cylinders as its higher-performance, V-8-powered SL55 and SL63 siblings, this mannequin has know-how derived from Formula 1 that guarantees elevated responsiveness from the turbocharged inline-four.

    mercedes amg sl43

    Mercedes-Benz

    The SL43’s occasion piece is a turbocharger with an electrical motor plus the everyday exhaust-gas plumbing. This production-car first is fitted to the M139 2.0-liter inline-four, the identical engine discovered within the CLA45 and GLA45 AMG fashions. The motor is simply about an inch and a half thick and mounted on the shaft between the turbine wheel and compressor wheel. The complete level is that this motor can spin the compressor wheel earlier than the exhaust gases do, decreasing turbo lag, offering a near-immediate response when the motive force pins the throttle, and sustaining enhance strain even when the motive force lets off the gasoline or hits the brakes. This similar know-how is discovered within the turbocharged 1.6-liter V-6 hybrids utilized by the Mercedes-AMG Formula 1 workforce.

    mercedes amg sl43

    Mercedes-Benz

    The four-cylinder engine pumps out a steady whole of 376 horsepower and 354 pound-feet of torque, whereas the 48-volt, belt-driven starter-generator can present a quick enhance of 13 additional horses. The 48-volt setup additionally permits the SL43 to recoup power whereas slowing and smoothing out the engine’s start-stop perform. The M139 is, for the primary time, mounted longitudinally within the SL43 and linked to a nine-speed computerized transmission with the AMG-typical moist clutch pack rather than a torque converter. Mercedes claims the rear-wheel-drive roadster can hit 62 mph in 4.9 seconds on its strategy to a 170 mph high pace.

    A number of minor visible modifications distinguish the SL43 from the 55 and 63. The tailpipes are spherical and the rear bumper is simplified, ditching the vents behind the rear wheels. The entrance bumper can also be reshaped, and the SL43 rides on 19-inch wheels as commonplace, with elective 20- and 21-inch wheels. The SL43 isn’t confirmed for the United States, with a Mercedes spokesperson telling Car and Driver that the roadster is “is currently still under consideration for the U.S. market.” If it does attain our shores, anticipate it to be significantly cheaper than the SL55, which we estimate will value round $135,000.

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Caleb Miller

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