To refresh, this one utilizes the same Ferrari-designed and -built F160 3.0-liter twin-turbo V-6 (using a 60-degree block that is loosely based on Chrysler’s Pentastar V-6). For the Q4 it’s tuned to peak at 345 hp and 369 lb-ft, down from the SQ4’s 424 hp and 428 lb-ft. And in a rare case of things working out the way the math suggests it should, the 19 percent less powerful version is precisely 19 percent slower to 60 mph—5.8 seconds versus the SQ4’s 4.9. That time gap is pretty well maintained through the quarter mile, with the Q4 crossing in 14.2 seconds at 98.2 mph, 0.8 second and 5.1 mph behind the SQ4.
The funny thing is, when driving the two back to back, the power deficit seems less than it is—perhaps because both variants seem to bellow an equivalent chorus of baritone sport-mode bluster when you’re on the throttle and percussive snaps, crackles, and pops when you lift off of it. The starker difference is with the level of grip generated by the Q4’s all-season 265/45R20 Continental CrossContact LX Sport tires as compared with the SQ4’s staggered fitment 265/40 front and 295/35 rear 21-inch ContiSport Contact 5 meats. Stopping distances stretched 14 feet longer (127 versus 113 feet), and max-lateral grip dropped from 0.86 to 0.82 g.
That doesn’t look like much, but on a tight, twisting road the Q4 is all tire squeal and hyperactive stability-control intervention while the SQ4 quietly drifts through the bends at a much swifter pace. A humbling anecdote: At one point during our drive the Q4 was only just keeping pace with a lowly Subaru Crosstrek, howling its tires and brake-pulsing its various corners to keep up with the much less dramatic Subie. This issue can likely be cured by opting for the $2,980 optional 265/40R21 summer tires (plus a set of winter footwear if you don’t live in the “smile states”). Of course, doing so will further compromise the ride quality, which is actually best on the base 19-inch tires, but it’s still quite supple on the squishy 20s. One final handling note: the sublimely communicative hydraulic steering assist is an increasingly rare treat, as road test editor Chris Walton noted: “The hydraulic assist offers a glimpse of how steering feel really can inform the driver about tire/contact patch grip info with weightiness/lightness.”


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