Robb Review: Aston Martin DBX707
Aston Martin’s new DBX707 is the world’s most powerful SUV. So naturally, we took it to the track on a dangerously wet day.
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The Phillip Island Circuit in Victoria isn’t a race track, it’s a 4.4-kilometre-long path straight to the Pearly Gates. Even at the sunniest of times, on a bone-dry surface, it’s the kind of circuit that has even the bravest drivers checking life insurance policies, before pinning photos of partners and kids to their dashboards. But on a day like today, with torrential rain transforming the asphalt into a slippery rink of doom, and unpredictable wind gusts that could fell skyscrapers, it’s the scariest place on the planet. Tackling it in an Abrams tank would be intimidating.
On paper, the Aston Martin DBX707 should make that primal fear run even deeper. For starters, the 707 refers to the number of horses on offer from the AMG-derived 4.0-litre twin-turbo V8 engine; that’s 502 kW in new money. Add to the equation a mighty 900 Nm, and a zero-to-100 km/h figure of 3.3 seconds, and you’re left with not only “the world’s most powerful luxury SUV” (until Ferrari
unleashes its Purosangue to the road) but a vehicle that shouldn’t exist in the same space-time dimension as a greasy race track.
And then you actually drive the 707, rather than have terrible thoughts about it involving roadside flowers and crosses, and suddenly the world—well, Phillip Island at least—feels less funereal.
Its acceleration—which in the right hands, on the right track, in the right conditions, will push the speedometer needle to 310 km/h—is immense, even in the wet. Push the start button (the 707 is also equipped with a Loud Start mode which unlocks the full booming, barking exhaust note from the off), grip the wheel and stamp your foot, and the nine-speed wet-clutch automatic instantly begins shovelling great handfuls of grunt to all four wheels for maximum traction.
It does more than just force you back into your seat, it feels like you’re about to be pushed through the seat. And the power delivery will continue uninterrupted for as long as your courage holds (this writer’s bravery gave out at around 240 km/h on a rain-slicked straight).
What’s more surprising is the way this 2.2-tonne office-block-on-wheels deals with corners, putting clear distance between the 707 and the regular DBX in terms of handling and grip—and overall greatness.
This is thanks to a raft of new technology, including an electronic limited-slip rear differential—sending the power where it’s needed most—air-suspension, Pirelli P Zero performance tyres, active anti-roll bars and, critically, 420 mm carbon brakes that ensure the big Aston stops when and where you want it to. Body roll has been banished almost completely, with the SUV sitting flat and true through corners, helped in part by firmed-up suspension.
The 707’s grip is a trickier tale to tell. On a watery death trap like Phillip Island, picking the driest line is important, as is treating the accelerator gingerly when the front wheels are anything but perfectly straight. But even when you get it wrong, the Aston’s electronic aids do a commendable job of quieting the wheel spin to keep you travelling in the right direction.
On a less positive note, the 707’s interior is already starting to date faster than shagpile carpeting (what, no touchscreen?). And our brief on-road test suggested it may not be the most comfy family transporter. But there are lesser SUVs for that. This $428,400 Aston is unashamedly about performance. Just wait for a dry day before trying it out.
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