Porsche 911 GT3 RS vs Aston Martin DBX707
Compare the Porsche 911 GT3 RS vs Aston Martin DBX707. The Porsche 911 GT3 RS is £32,000 cheaper. The Porsche 911 GT3 RS is 0.3s quicker to 60mph. The Porsche 911 GT3 RS is more fuel efficient. Full performance, cost & ownership breakdown.
The Porsche 911 GT3 RS is priced from £178,000, powered by a 4.0L Flat-6, producing 518 hp, with 465 Nm of torque, reaching 0-60 mph in 3s, a top speed of 184 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 RS offers a 132-litre boot, a usable front boot, runs on petrol, returns around 22 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 RS is £32,000 cheaper than its rival, both require around £1,700 per year in maintenance, the Porsche 911 GT3 RS is the more fuel-efficient choice, a full tank costs around £85 for the Porsche 911 GT3 RS and £100 for the Aston Martin DBX707.
Driving Character: Porsche 911 GT3 RS vs Aston Martin DBX707
The Porsche 911 GT3 RS is essentially a road-legal race car, featuring aggressive aerodynamic aids that generate genuine downforce. The 4.0L flat-six is at its most extreme here, delivering 518hp with a razor-sharp throttle response. The chassis is incredibly stiff, tuned for maximum track precision, which makes for a highly intense driving experience on public roads. The steering feel is unparalleled, transmitting every nuance of the road surface directly to the driver’s palms. It is a machine that demands complete, unwavering commitment, rewarding the skilled pilot with performance levels that exceed almost anything else in the production 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 RS takes our 0-100 driving character grading, 97 against 78. Characteristic of the Porsche 911 GT3 RS: The most extreme naturally-aspirated 911, drenched in motorsport aero technology. For the Aston Martin DBX707: Startlingly quick and composed for a two-tonne-plus SUV. In outright terms it is 518 hp against 707 — a 189 hp gap — and the Porsche 911 GT3 RS reaches 60 mph 0.3s sooner.
Interior & Cabin: Porsche 911 GT3 RS vs Aston Martin DBX707
Inside, the Porsche 911 GT3 RS is stripped to the bone, with CFRP door panels and a roll cage serving as the primary design features. Carbon bucket seats are standard, locking the driver in place for high-G maneuvers. The cabin is purposefully sparse, lacking luxury padding in favour of weight-saving measures that prioritize speed. While road and wind noise are prominent at motorway speeds due to the lack of sound deadening, this is expected in a model of this focus. Everything is designed to be functional and lightweight, creating a pure, motorsport-inspired workspace that keeps the driver focused on the tarmac.
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, 55 against 85. Characteristic of the Porsche 911 GT3 RS: Motorsport-focused cabin, similar to the GT3 but more stripped-back. For the Aston Martin DBX707: Lavish, driver-focused cabin unlike most performance SUV rivals.
Daily Usability: Porsche 911 GT3 RS vs Aston Martin DBX707
Daily usability is deliberately limited in the Porsche 911 GT3 RS, though it remains technically legal for the road. The nose lift system is a necessity for clearing urban obstacles, preventing damage to the sophisticated front splitter. Storage is limited to the front trunk, which is adequate for track day essentials but not for large loads. Ingress and egress are physically demanding, requiring one to clear the roll cage. The suspension is too firm for comfort on broken surfaces, making long-distance commuting fatiguing. It is a specialized weapon meant for the circuit, not a daily companion for errands.
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, 45 against 82. Characteristic of the Porsche 911 GT3 RS: Usable daily if you accept its extreme, track-bred 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 RS, and everyday running costs that favour the Porsche 911 GT3 RS at the pumps.
Ownership: Porsche 911 GT3 RS vs Aston Martin DBX707
Owning a Porsche 911 GT3 RS is a commitment to the pinnacle of naturally aspirated performance, and it carries the costs to match. With its motorsport-derived components, maintenance is frequent and expensive, requiring specialist knowledge that the Porsche Motorsport network provides. Insurance premiums are significant given the car’s market value and performance potential. However, its scarcity and extreme engineering ensure that it remains a high-value asset, with strong residuals and a dedicated community of owners. It is a long-term investment that requires dedicated resources but pays off with an experience that few other machines can provide.
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 RS takes our 0-100 ownership grading, 80 against 62. Characteristic of the Porsche 911 GT3 RS: Strong Porsche reliability and huge collector demand. For the Aston Martin DBX707: Strong demand keeps residuals healthy. On the wallet the two diverge at £178,000 versus £210,000 — a £32,000 difference, and warranty cover of 4yr / 50k mi versus 3yr / unlimited mi.