BMW’s M Performance lineup is growing, most recently with the addition of the X4 M40i, which targets the Audi SQ5 and the upcoming Mercedes-Benz GLC450 AMG. Unlike those two, however, the BMW is based on a “crossover coupe”—and based on its specs and appearance, it might well be the sportiest SUV in its size class.
Being an M Performance model, the X4 M40i has been tweaked by the company’s M GmbH performance gurus. It’s powered by an upgraded version of the X4 35i’s N55 in-line six, rated here at 355 horsepower and 343 lb-ft of torque. That’s an increase of 55 horsepower and 43 lb-ft, and it translates into a factory-estimated 0-60 mph sprint of just 4.7 seconds, down from 5.2 seconds for the 35i. Top speed is governed at 130 mph, but it can be increased to 150 mph.
The X4 M40i rolls on 245/45 front and 275/40 rear rubber on 19-inch wheels; it can also be specified with 245/40 and 275/35 tires on 20-inch wheels. The suspension has increased front camber as well as stiffer springs and antiroll bars. The steering is modified as well. All-wheel drive is standard.
We were impressed by the performance of the regular X4 35i. And there’s a good possibility the 40i will serve as a segment benchmark when it appears in early 2016.
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