DBX707 takes off

Aston Martin steals a march on rivals with launch of world’s most powerful luxury SUV

ASTON MARTIN HAS PRODUCED many landmark cars over the years. The most powerful luxury SUV in the world probably wasn’t one the connoisseurs were expecting, but that’s exactly what the British company has achieved in creating the DBX707.

If the name doesn’t give it away, allow us to explain. The 707 represents the 707PS that the 4-litre twin-turbocharged V8 now produces. That’s 697bhp in old money, which admittedly doesn’t sound quite so catchy in the world of marketing.

The 155bhp increase over the regular V8 DBX (which remains in production alongside the China-only six-cylinder mildhybrid model) has been achieved by fitting new turbochargers and air intake system, uprating the cooling system and adding a fruitier exhaust. These changes have also resulted in peak torque climbing to a notinconsequential 900Nm, up from 700.

Despite a near-2300kg kerb weight, the changes are enough to see the 707 reach 100kmph from a standstill in an uncomfortable-sounding 3.3sec. This 1.2sec improvement over the standard DBX isn’t only down to brute force – not only has Aston Martin recalibrated its launch control software but it has also fitted MercedesBenz’s nine-speed wet-clutch gearbox, replacing the DBX V8’s torque converter unit. The new unit not only has shorter ratios but delivers quicker shifts, too. In addition, a new electronically controlled limited-slip e-diff has been installed in the rear axle, the final drive ratio has been lowered from 3.27 to 3.07, and the propshaft is now carbonfibre.

Further changes for the 707 include carbon-ceramic brakes with 420mm front and 380mm rear discs, saving over 40kg of unsprung mass, a new front grille and new aero elements front, rear and underneath. Larger, 23in wheels fitted with AM’s bespoke Pirelli P Zero tyre (285 front, 325 rear) are said to improve steering response, with the steering also recalibrated to match the reduction in mass at each corner. Chassis changes include cast-aluminium suspension mounts and tweaks made to the three-chamber air suspension system.

Interior upgrades include a new rotary control for the driver modes, while the secondary switchgear on the floating centre console has been updated. New trim and materials include Alcantara/ leather blends and a bronze mesh-like material in lieu of the traditional piano black or carbon twill trim.

Being able to claim you own the most powerful production SUV will naturally come at a price. Deliveries start later this year. ⌧