Porsche 911 GT3 vs Aston Martin DBX707
Compare the Porsche 911 GT3 vs Aston Martin DBX707. The Porsche 911 GT3 is £67,000 cheaper. The Porsche 911 GT3 is 0.1s quicker to 60mph. The Porsche 911 GT3 is more fuel efficient. Full performance, cost & ownership breakdown.
The Porsche 911 GT3 is priced from £143,000, powered by a 4.0L Flat-6, producing 502 hp, with 347 Nm of torque, reaching 0-60 mph in 3.2s, a top speed of 197 mph, sent to the road via rear-wheel drive. 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 GT3 offers a 132-litre boot, a usable front boot, runs on petrol, returns around 23 mpg, is covered by a 4yr / 50k mi warranty. 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.
On cost of ownership, the Porsche 911 GT3 is £67,000 cheaper than its rival, the Porsche 911 GT3 costs less in annual maintenance (£1,500 versus £1,700), the Porsche 911 GT3 is the more fuel-efficient choice, a full tank costs around £85 for the Porsche 911 GT3 and £100 for the Aston Martin DBX707.
Driving Character: Porsche 911 GT3 vs Aston Martin DBX707
The Porsche 911 GT3 remains the benchmark for naturally aspirated sports cars. Its 4.0L flat-six is a masterpiece of linear power delivery, revving to a crescendo that defines the driving experience. The chassis balance is near perfect, thanks to its sophisticated double-wishbone front suspension, which provides telepathic steering feedback. On the road, it is a demanding partner that requires focus, yet it rewards the driver with an analogue feel that is largely absent from its turbocharged peers. Every gearshift, whether manual or PDK, is crisp and intentional, cementing its position as a true driver-focused machine for the real world.
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.
Head-to-head, the division is clear: the Porsche 911 GT3 takes our 0-100 driving character grading, 96 against 78. Characteristic of the Porsche 911 GT3: Visceral, naturally-aspirated, motorsport-derived engagement. For the Aston Martin DBX707: Startlingly quick and composed for a two-tonne-plus SUV. In outright terms it is 502 hp against 707 — a 205 hp gap — and the Porsche 911 GT3 reaches 60 mph 0.1s sooner.
Interior & Cabin: Porsche 911 GT3 vs Aston Martin DBX707
The cabin of the Porsche 911 GT3 is a focused environment, blending high-end technology with a driver-centric design. Alcantara and carbon fibre trim are standard, providing a tactile, high-quality feel that mirrors the car’s track-ready intention. The instrumentation is clear and uncluttered, ensuring that vital information is at the driver's fingertips. While the rear seats are removed to save weight, the front interior remains comfortable enough for a spirited drive across continents. The ergonomics are peerless, placing every control in the perfect position for intuitive use during high-speed operation, reflecting the deep thought Porsche invests in its driver interface.
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.
Head-to-head, the division is clear: the Aston Martin DBX707 takes our 0-100 interior & cabin grading, 62 against 85. Characteristic of the Porsche 911 GT3: High-quality cabin with genuine everyday habitability. For the Aston Martin DBX707: Lavish, driver-focused cabin unlike most performance SUV rivals.
Daily Usability: Porsche 911 GT3 vs Aston Martin DBX707
Despite its hardcore reputation, the Porsche 911 GT3 is surprisingly usable for an enthusiast. The dimensions are well-suited to narrow UK lanes, and the front lift system helps preserve the front bumper over speed humps. While the suspension is undeniably firm, it is well-damped, avoiding the harshness found in more extreme models. Luggage capacity is sufficient for a weekend of touring, with both the front and rear shelf area providing storage. It functions well for urban errands, though the engine’s performance is clearly happiest when given the space to stretch its legs on a challenging back road.
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.
Head-to-head, the division is clear: the Aston Martin DBX707 takes our 0-100 daily usability grading, 58 against 82. Characteristic of the Porsche 911 GT3: Usable daily if you accept its intensity. For the Aston Martin DBX707: Genuinely practical family SUV with supercar-baiting pace. that means 132 litres of boot space against 632, plus a usable front boot in the Porsche 911 GT3, and everyday running costs that favour the Porsche 911 GT3 at the pumps.
Ownership: Porsche 911 GT3 vs Aston Martin DBX707
Ownership of the Porsche 911 GT3 is a relatively straightforward affair within the performance car market. The extensive Porsche dealer network provides excellent service coverage, making it easier to maintain than hypercar-level alternatives. Residual values remain exceptionally strong, with demand consistently outstripping supply. Annual maintenance costs are reflective of the performance specification, but parts availability is good. Insurance is manageable for a car of this capability, and the reliability of the naturally aspirated powertrain adds a layer of confidence to the ownership experience. It is a car that makes financial and emotional sense to the dedicated enthusiast.
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.
Head-to-head, the division is clear: the Porsche 911 GT3 takes our 0-100 ownership grading, 80 against 62. Characteristic of the Porsche 911 GT3: Strong Porsche reliability and huge collector demand. For the Aston Martin DBX707: Strong demand keeps residuals healthy. On the wallet the two diverge at £143,000 versus £210,000 — a £67,000 difference, with annual maintenance of £1,500 against £1,700, and warranty cover of 4yr / 50k mi versus 3yr / unlimited mi.