Aston Martin DB12 vs Porsche 911 GT3
Compare the Aston Martin DB12 vs Porsche 911 GT3. The Porsche 911 GT3 is £42,000 cheaper. The Porsche 911 GT3 is 0.2s quicker to 60mph. The Aston Martin DB12 is more fuel efficient. Full performance, cost & ownership breakdown.
The Aston Martin DB12 is priced from £185,000, powered by a 4.0L Twin-Turbo V8, producing 671 hp, with 800 Nm of torque, reaching 0-62 mph in 3.6 s, a top speed of 202 mph, sent to the road via rear-wheel drive. The Porsche 911 GT3 is priced from £143,000, powered by a 4.0L Flat-6, producing 502 hp, with 470 Nm of torque, reaching 0-62 mph in 3.4 s, a top speed of 198 mph, sent to the road via rear-wheel drive.
The Aston Martin DB12 offers a 262-litre boot, runs on petrol, returns around 23.2 mpg (combined), is covered by a 3 years / unlimited miles (original UK new-car cover) warranty. The Porsche 911 GT3 offers a 132-litre boot, a usable front boot, runs on petrol, returns around 23 mpg, is covered by a 3 years / unlimited miles (original UK new-car cover) warranty.
On cost of ownership, the Porsche 911 GT3 is £42,000 cheaper than its rival, the Porsche 911 GT3 costs less in annual maintenance (£3,500 versus £1,500), the Aston Martin DB12 is the more fuel-efficient choice, the Aston Martin DB12 has 78 L fuel tank, the Porsche 911 GT3 has 64 L fuel tank.
Driving Character: Aston Martin DB12 vs Porsche 911 GT3
The DB12 marks a decisive shift in Aston Martin’s philosophy, moving away from the wallowing nature of its predecessor to embrace true sporting agility. The 671hp AMG-sourced V8 provides muscular, linear power that feels perfectly harnessed by the new nine-speed wet-clutch transmission. While the chassis balance is significantly sharpened, the car retains a sophisticated grand tourer core that isolates occupants from road imperfections. It behaves with composure on winding B-roads, offering steering that feels more connected and precise than previous models, ensuring that while it is an aggressive performer, it remains deeply comfortable over long distances.
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.
Head-to-head, the division is clear: the Aston Martin DB12 — 671hp AMG V8; more powerful and responsive than the DB11 it replaces; the Porsche 911 GT3 — Naturally aspirated 4.0L flat-six; linear, rev-hungry throttle response. Characteristic of the Aston Martin DB12: Nine-speed wet-clutch gearbox; quickest shifts in Aston Martin history. For the Porsche 911 GT3: Communicative steering with genuine road feel; analogue at the limit. In outright terms it is 671 hp against 502 — a 169 hp gap — and the Porsche 911 GT3 reaches 60 mph 0.2s sooner.
Interior & Cabin: Aston Martin DB12 vs Porsche 911 GT3
Stepping inside the DB12 reveals a transformative leap for the marque, shedding the dated systems of old for a fully contemporary cockpit. The centrepiece is the curved 10.25-inch touchscreen, which offers responsive software and logical navigation, finally bringing the tech suite up to current luxury standards. Materials remain premium, with supple hides and high-quality finishes throughout. However, some traditionalists may lament that the cabin feels less like a bespoke, hand-crafted space and more like a modern, technology-focused office. Despite this evolution, the overall fit and finish are of an exceptionally high order for this segment.
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.
Head-to-head, the division is clear: the Aston Martin DB12 — Completely redesigned interior; most contemporary Aston cabin to date; the Porsche 911 GT3 — Driver-focused ergonomics; clear, purposeful instrumentation. Characteristic of the Aston Martin DB12: Curved 10.25-inch touchscreen; significantly improved tech versus DB11. For the Porsche 911 GT3: Alcantara and carbon trim; stripped-back but quality materials.
Daily Usability: Aston Martin DB12 vs Porsche 911 GT3
Practicality in the DB12 is framed by its 2+2 layout and a functional 300-litre boot, which makes it a surprisingly viable option for weekend excursions. While the interior is more ergonomic than earlier Astons, the car’s significant 76.7-inch width demands vigilance in tighter urban environments or narrow parking bays. The ride quality is expertly calibrated, allowing it to glide over broken road surfaces in GT mode without bruising its occupants. It is clearly built for the open road, where its combination of power and usable space makes it a highly capable companion for cross-continental travel.
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.
Head-to-head, the division is clear: the Aston Martin DB12 — 300L boot and 2+2 seating balance sports car focus with GT practicality; the Porsche 911 GT3 — Manageable dimensions suit urban environments better than rivals. Characteristic of the Aston Martin DB12: Comfortable GT modes well calibrated for real-world road quality. For the Porsche 911 GT3: Front trunk and rear boot usable for weekend luggage. that means 262 litres of boot space against 132, plus a usable front boot in the Porsche 911 GT3, and everyday running costs that favour the Aston Martin DB12 at the pumps.
Ownership: Aston Martin DB12 vs Porsche 911 GT3
Ownership of the DB12 represents the most polished experience in the history of the DB lineage, with expected reliability levels that finally match its rivals. While the annual maintenance costs remain firmly in the premium category, the backing from the Aston Martin Works network provides extensive support that mitigates the risks of high-performance motoring. As the current benchmark for the brand, it holds a strong position in the market, though prospective owners should factor in high insurance premiums and the inevitable expenses associated with maintaining such a sophisticated, high-output drivetrain over time.
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.
Head-to-head, the division is clear: the Aston Martin DB12 — Latest generation Aston; best reliability expectation of any DB model; the Porsche 911 GT3 — Porsche dealer network extensive; service expertise widely available. Characteristic of the Aston Martin DB12: Aston Martin Works and wider network both support DB12 comprehensively. For the Porsche 911 GT3: Exceptional residuals; high enthusiast demand sustains value. On the wallet the two diverge at £185,000 versus £143,000 — a £42,000 difference, with annual maintenance of £3,500 against £1,500.