Aston Martin DB12 vs Porsche 911 GT3 RS

Compare the Aston Martin DB12 vs Porsche 911 GT3 RS. The Porsche 911 GT3 RS is £7,000 cheaper. The Porsche 911 GT3 RS is 0.4s 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 RS is priced from £178,000, powered by a 4.0L Flat-6, producing 518 hp, with 465 Nm of torque, reaching 0-62 mph in 3.2 s, a top speed of 184 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 RS offers a 0-litre boot, runs on petrol, returns around 22 mpg, is covered by a 3 years / unlimited miles (original UK new-car cover) warranty.

On cost of ownership, the Porsche 911 GT3 RS is £7,000 cheaper than its rival, the Porsche 911 GT3 RS costs less in annual maintenance (£3,500 versus £1,700), the Aston Martin DB12 is the more fuel-efficient choice, the Aston Martin DB12 has 78 L fuel tank.

Driving Character: Aston Martin DB12 vs Porsche 911 GT3 RS

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 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.

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 RS — Aerodynamic chassis hardware; extreme downforce keeps the 4.0L flat-six pinned through high-speed turns. Characteristic of the Aston Martin DB12: Nine-speed wet-clutch gearbox; quickest shifts in Aston Martin history. For the Porsche 911 GT3 RS: Race-derived suspension tuning; rapid steering feedback ensures immediate inputs at the limit. In outright terms it is 671 hp against 518 — a 153 hp gap — and the Porsche 911 GT3 RS reaches 60 mph 0.4s sooner.

Interior & Cabin: Aston Martin DB12 vs Porsche 911 GT3 RS

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.

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.

Head-to-head, the division is clear: the Aston Martin DB12 — Completely redesigned interior; most contemporary Aston cabin to date; the Porsche 911 GT3 RS — Driver-centric interface; digital steering wheel buttons manage advanced damper and differential settings. Characteristic of the Aston Martin DB12: Curved 10.25-inch touchscreen; significantly improved tech versus DB11. For the Porsche 911 GT3 RS: Carbon bucket seats provide lateral support; stripped dashboard reduces weight and increases focus.

Daily Usability: Aston Martin DB12 vs Porsche 911 GT3 RS

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.

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.

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 RS — Optimised front trunk storage; 132L volume allows for light luggage despite aerodynamic focus. Characteristic of the Aston Martin DB12: Comfortable GT modes well calibrated for real-world road quality. For the Porsche 911 GT3 RS: Short overhangs aid geometry; 105 mm ground clearance manages moderate inclines with care. that means 262 litres of boot space against 0, and everyday running costs that favour the Aston Martin DB12 at the pumps.

Ownership: Aston Martin DB12 vs Porsche 911 GT3 RS

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.

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.

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 RS — High collector value; engineering pedigree ensures that market desirability remains extremely elevated. Characteristic of the Aston Martin DB12: Aston Martin Works and wider network both support DB12 comprehensively. For the Porsche 911 GT3 RS: Expert dealer network; maintenance programs are specifically structured for intensive track-focussed use. On the wallet the two diverge at £185,000 versus £178,000 — a £7,000 difference, with annual maintenance of £3,500 against £1,700.

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