Mercedes-AMG is introducing a host of updates for its 2021 GLA 45 4MATIC+ crossover. To avoid confusion, the GLA 45 is available in standard and S versions. The standard model is now packing 387 horsepower and 354 pound-feet of torque from its 2.0-liter turbocharged powerplant. According to Mercedes-AMG, the new engine is currently the world’s most powerful turbocharged four-cylinder in production.

However, the S version is packing a meaner punch. It now outputs 421 horsepower and 368 pound-feet of torque from the same 2.0-liter mill and produces 30 more horsepower than before.
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