There's a new contender in the world of ultra-high-performance SUVs. We clarify this as ultra-high performance because the standard-issue Aston Martin DBX with 542 horsepower isn't a slouch by any means. But we aren't talking about the standard model – this is the DBX707 and if you're wondering where that number comes from, just look under the hood.
That's where you'll find a familiar 4.0-liter V8 engine, but it's massaged to generate no less than 697 horsepower (707 metric horsepower, hence the 707 designation) and 663 pound-feet (900 Newton-meters) of torque. To make that happen, Aston Martin fitted a new pair of ball-bearing turbochargers along with a new engine calibration to make the most of the added boost. More air coming in requires better piping to get it out, so the DBX707 gains a completely new quad-exit active exhaust system that flows better while also giving occupants some delectable V8 noise when so desired.
