Aston Martin DBX707 vs Porsche 911 Turbo S
Compare the Aston Martin DBX707 vs Porsche 911 Turbo S. The Porsche 911 Turbo S is £35,000 cheaper. The Porsche 911 Turbo S is 0.7s quicker to 60mph. The Aston Martin DBX707 is more fuel efficient. Full performance, cost & ownership breakdown.
The Aston Martin DBX707 is priced from £210,000, powered by a 4.0L Twin-Turbo V8, producing 707 hp, with 900 Nm of torque, reaching 0-60 mph in 3.3s, a top speed of 193 mph, sent to the road via all-wheel drive. The Porsche 911 Turbo S is priced from £175,000, powered by a 3.8L Twin-Turbo Flat-6, producing 640 hp, with 800 Nm of torque, reaching 0-60 mph in 2.6s, a top speed of 205 mph, sent to the road via all-wheel drive.
The Aston Martin DBX707 offers a 632-litre boot, folding rear seats, runs on petrol, returns around 21 mpg, is covered by a 3yr / unlimited mi warranty. The Porsche 911 Turbo S offers a 128-litre boot, a usable front boot, runs on petrol, returns around 20 mpg, is covered by a 4yr / 50k mi warranty.
On cost of ownership, the Porsche 911 Turbo S is £35,000 cheaper than its rival, the Aston Martin DBX707 costs less in annual maintenance (£1,700 versus £1,800), the Aston Martin DBX707 is the more fuel-efficient choice, a full tank costs around £100 for the Aston Martin DBX707 and £90 for the Porsche 911 Turbo S.
Driving Character: Aston Martin DBX707 vs Porsche 911 Turbo S
The DBX707 redefines the expectations of a luxury SUV, injecting 707hp of twin-turbo V8 fury into a high-riding chassis that refuses to behave like a typical utility vehicle. With its intelligent all-wheel-drive system and electronic rear differential, it manages to put its immense power down with surprising effectiveness. While it possesses remarkable grip, the physics of its 5071 lbs weight inevitably surface during aggressive cornering. The nine-speed wet-clutch gearbox is snappy, providing gear changes that feel purposeful and sharp, allowing the driver to exploit the engine's 900Nm of torque to its absolute limit with confidence and speed.
The Porsche 911 Turbo S utilises a sophisticated AWD system with active torque vectoring that provides staggering, all-weather performance. It feels deceptively rapid, with a chassis control system that masks its immense power through cornering, yet it ultimately insulates the driver more than the GT-spec siblings, prioritizing crushing point-to-point speed over nuanced steering feel.
Head-to-head, the division is clear: the Porsche 911 Turbo S takes our 0-100 driving character grading, 78 against 88. Characteristic of the Aston Martin DBX707: Startlingly quick and composed for a two-tonne-plus SUV. For the Porsche 911 Turbo S: Immense, effortless all-wheel-drive pace with real depth of ability. In outright terms it is 707 hp against 640 — a 67 hp gap — and the Porsche 911 Turbo S reaches 60 mph 0.7s sooner.
Interior & Cabin: Aston Martin DBX707 vs Porsche 911 Turbo S
The interior of the DBX707 is a masterclass in performance luxury, featuring bespoke sport seats and Alcantara detailing that separates it from the standard model. It offers genuine, spacious accommodation for four adults, ensuring that performance does not come at the expense of passenger comfort. However, when compared to the ultra-modern interfaces of the Cayenne or the Urus, the cabin tech feels slightly behind the curve. While the build quality is superb and the materials are quintessentially British, the infotainment system lacks the cutting-edge fluidity of its most direct rivals at this price point.
The cabin is remarkably refined for such a potent machine, making it a genuinely usable daily GT car. It features the signature Sport Chrono dial and luxury seating, with all technology packages seamlessly integrated. While the material quality is high, it lacks the bespoke flair or artisanal material choices found in certain Italian rivals at this price point.
Head-to-head, the division is clear: the Aston Martin DBX707 takes our 0-100 interior & cabin grading, 85 against 84. Characteristic of the Aston Martin DBX707: Lavish, driver-focused cabin unlike most performance SUV rivals. For the Porsche 911 Turbo S: Supportive, comfortable seats and modern, user-friendly cabin.
Daily Usability: Aston Martin DBX707 vs Porsche 911 Turbo S
Practicality is the DBX707’s greatest asset, boasting a 632-litre boot that makes it a legitimate family vehicle capable of swallowing luggage with ease. Its air suspension system with adaptive dampers allows the car to switch seamlessly between a composed, comfortable cruiser and a stiffened, responsive performance machine. While fuel economy is inevitably poor at 21mpg, the trade-off is a level of versatility rarely seen in such a powerful vehicle. It is a car that thrives on variety, handling the school run and high-speed motorways with equal parts ease and effortless, explosive capability.
As the most practical 911 variant, the Turbo S offers genuine all-season confidence thanks to its AWD architecture. Its clever combination of a front boot and rear storage allows for meaningful luggage space, though the expansive body width can create significant challenges in tight urban environments. Furthermore, its sheer performance demands regular attention to tyre wear.
Head-to-head, the division is clear: the Porsche 911 Turbo S takes our 0-100 daily usability grading, 82 against 90. Characteristic of the Aston Martin DBX707: Genuinely practical family SUV with supercar-baiting pace. For the Porsche 911 Turbo S: The most daily-usable supercar on sale — comfortable, quiet, easy to place. that means 632 litres of boot space against 128, plus a usable front boot in the Porsche 911 Turbo S, and everyday running costs that favour the Aston Martin DBX707 at the pumps.
Ownership: Aston Martin DBX707 vs Porsche 911 Turbo S
Maintaining a DBX707 is a manageable affair compared to its more exclusive siblings, thanks to the expansion of the Aston Martin dealer network and improved service accessibility. Demand for the vehicle on the used market is robust, driven by the growing appetite for high-performance SUVs, though early depreciation remains a factor for first owners. Tyre costs are significant given the car’s weight and performance, and owners must prepare for the regular attention required by such a high-output platform. Overall, it serves as a reliable, albeit premium-cost, flagship for those needing utility with a supercar-killing powertrain.
Maintaining a stellar reputation for reliability, this model remains a benchmark for high-performance usability. It commands premium residuals in the used market, consistently holding its value well. However, prospective owners must account for high annual maintenance costs, with the complex PDK transmission and AWD system adding significant weight to long-term service intervals compared to simpler sports cars.
Head-to-head, the division is clear: the Porsche 911 Turbo S takes our 0-100 ownership grading, 62 against 88. Characteristic of the Aston Martin DBX707: Strong demand keeps residuals healthy. For the Porsche 911 Turbo S: Exceptionally reliable for a car with supercar performance. On the wallet the two diverge at £210,000 versus £175,000 — a £35,000 difference, with annual maintenance of £1,700 against £1,800, and warranty cover of 3yr / unlimited mi versus 4yr / 50k mi.