Car-based crossover SUVs are on an unstoppable roll, and carmakers are launching one after another. With crossovers fast replacing passenger cars on buyers’ shopping lists, sport utilities are also increasingly receiving ministrations from automaker’s performance arms. With the new Mercedes-AMG GLC43, for example, Daimler is following the lead of Audi with its SQ5 and BMW with its recently launched x4 m40i.

Based on the GLC (the compact crossover that recently replaced the GLK), the GLC43 is one of AMG's newly launched Sport models, a line positioned below AMG's traditional high-powered models but significantly above vehicles without AMG enhancements. Power comes from a twin-turbocharged 3.0-liter V-6 that churns out 362 horsepower and 384 lb-ft of torque. This translates into serious performance: The sprint from 0 to 60 mph takes a mere 4.8 seconds, according to Mercedes, and top speed is governed at 155 mph.

To justify its status as an AMG, the GLC43 gets additional modifications beyond the powerful engine. The standard nine-speed automatic transmission is programmed for quicker shifts, and the exhaust system is tuned to emit burlier sounds under full-throttle upshifts. There are larger brake rotors (14.2 inches up front, 12.6 inches at the rear), and the standard 4MATIC all-wheel drive system apportions torque with a 69-percent bias to the rear axle. The chassis is upgraded with a sport-tuned version of the air suspension, including adaptive damping with Comfort, Sport, and Sport Plus modes. The AMG GLC43 also gets variable-ratio steering, new steering knuckles and suspension links, and additional negative camber.

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