Mercedes-AMG GT 63 4MATIC+ Coupe vs Porsche 911 Targa 4 GTS

Compare the Mercedes-AMG GT 63 4MATIC+ Coupe vs Porsche 911 Targa 4 GTS. The Porsche 911 Targa 4 GTS is £10,000 cheaper. The Porsche 911 Targa 4 GTS is 0.1s quicker to 60mph. The Porsche 911 Targa 4 GTS is more fuel efficient. Full performance, cost & ownership breakdown.

The Mercedes-AMG GT 63 4MATIC+ Coupe is priced from £155,000, powered by a 4.0L Twin-Turbo V8, producing 577 hp, with 800 Nm of torque, reaching 0-62 mph in 3.2 s, a top speed of 196 mph, sent to the road via all-wheel drive. The Porsche 911 Targa 4 GTS is priced from £145,000, powered by a 3.6L e-turbo flat-six T-Hybrid, producing 534 hp, with 610 Nm of torque, reaching 0-62 mph in 3.1 s, a top speed of 194 mph, sent to the road via all-wheel drive.

The Mercedes-AMG GT 63 4MATIC+ Coupe offers a 321-litre boot, runs on petrol, returns around 22 mpg, is covered by a 3 years / unlimited miles (original UK new-car cover) warranty. The Porsche 911 Targa 4 GTS offers a 135-litre boot, a usable front boot, runs on petrol, returns around 26 mpg, is covered by a 3 years / unlimited miles (original UK new-car cover) warranty.

On cost of ownership, the Porsche 911 Targa 4 GTS is £10,000 cheaper than its rival, the Porsche 911 Targa 4 GTS costs less in annual maintenance (£1,600 versus £1,500), the Porsche 911 Targa 4 GTS is the more fuel-efficient choice, the Mercedes-AMG GT 63 4MATIC+ Coupe has 70 L fuel tank, the Porsche 911 Targa 4 GTS has 63 L fuel tank.

Driving Character: Mercedes-AMG GT 63 4MATIC+ Coupe vs Porsche 911 Targa 4 GTS

The C192 AMG GT63 Coupe uses a 430 kW twin-turbo 4.0-litre V8, delivering 800 Nm through AMG Performance 4MATIC+ all-wheel drive and a nine-speed MCT transmission. Active rear-wheel steering and active roll control support its chassis. The manufacturer quotes 3.2 seconds from 0 to 100 km/h; this must not be presented as a 0-60 mph measurement.

The 992.2 Targa 4 GTS uses a 3.6-litre flat-six with an electrically assisted exhaust turbocharger and an electric motor integrated into the eight-speed PDK. The combustion engine supplies 357 kW and 570 Nm; combined system output is 398 kW and 610 Nm. All-wheel drive, rear-axle steering and PASM form part of the published chassis specification.

Head-to-head, the division is clear: the Mercedes-AMG GT 63 4MATIC+ Coupe — AMG 4.0L bi-turbo V8; exceptional throttle response and emotional delivery; the Porsche 911 Targa 4 GTS — The 992.2 Targa 4 GTS combines a 3.6-litre electrically turbocharged flat-six with T-Hybrid assistance and all-wheel drive.. Characteristic of the Mercedes-AMG GT 63 4MATIC+ Coupe: AMG Performance 4MATIC+ all-wheel drive, active rear-wheel steering and active roll control support the C192 chassis. For the Porsche 911 Targa 4 GTS: Targa roof mechanism; chassis rigidity remains high despite the open-top architectural change. In outright terms it is 577 hp against 534 — a 43 hp gap — and the Porsche 911 Targa 4 GTS reaches 60 mph 0.1s sooner.

Interior & Cabin: Mercedes-AMG GT 63 4MATIC+ Coupe vs Porsche 911 Targa 4 GTS

The C192 cabin combines a digital instrument display with an 11.9-inch portrait central touchscreen running MBUX. AMG sports seats are standard; Performance seats are optional. The optional rear seats create a 2+2 layout rather than full-size rear passenger accommodation.

The cabin of the Porsche 911 Targa 4 GTS is dominated by the iconic Targa bar, which provides a unique open-air experience while maintaining structural integrity. The interior is finished to a high standard, with premium materials and the intuitive, driver-centric layout that characterises the 992 generation. While the Targa bar creates a stylish aesthetic, it does restrict rear visibility somewhat. The technology, including the standard Bose audio, is well-integrated and provides a modern feel. It is a sophisticated, high-quality environment that balances luxury with the functional needs of a performance-oriented driver.

Head-to-head, the division is clear: the Mercedes-AMG GT 63 4MATIC+ Coupe — Long bonnet, short tail design creates distinct, dramatic driving environment; the Porsche 911 Targa 4 GTS — Luxury ergonomics; tech-focused cabin environment balances modern comfort with driver engagement features. Characteristic of the Mercedes-AMG GT 63 4MATIC+ Coupe: AMG sports seats are standard; Performance seats are optional. For the Porsche 911 Targa 4 GTS: High-quality leather and trim; interior refinement provides a quiet environment when closed.

Daily Usability: Mercedes-AMG GT 63 4MATIC+ Coupe vs Porsche 911 Targa 4 GTS

The C192 has a rear luggage compartment accessed through a large hatch. The manufacturer lists 321 litres, expanding to 675 litres with the applicable rear-seat configuration. The optional 2+2 layout is intended for rear occupants up to 1.50 metres tall.

Practicality is a major strength of the Porsche 911 Targa 4 GTS, as it offers the security of all-wheel drive and the joy of an open top. This combination makes it a genuinely usable car for all seasons, functioning perfectly as a daily driver. The rear seats offer occasional space for children or extra storage, and the front trunk is surprisingly capacious. While the roof mechanism does impact boot space when fully retracted, the overall design remains very user-friendly. It is a refined, comfortable cruiser that does not sacrifice its sporty character in the pursuit of daily usability.

Head-to-head, the division is clear: the Mercedes-AMG GT 63 4MATIC+ Coupe — The C192 has a 321-litre luggage compartment, expanding to 675 litres with the applicable rear-seat configuration.; the Porsche 911 Targa 4 GTS — The manufacturer technical sheet lists 135 litres of front luggage volume; rear stowage is a separate figure.. Characteristic of the Mercedes-AMG GT 63 4MATIC+ Coupe: Comfort mode genuinely softens the GT for road use. For the Porsche 911 Targa 4 GTS: 110 mm clearance ensures daily usability; ride quality absorbs common road imperfections well. that means 321 litres of boot space against 135, plus a usable front boot in the Porsche 911 Targa 4 GTS, and everyday running costs that favour the Porsche 911 Targa 4 GTS at the pumps.

Ownership: Mercedes-AMG GT 63 4MATIC+ Coupe vs Porsche 911 Targa 4 GTS

Owning an AMG GT is an investment in the traditional, high-performance V8 heritage of the brand. Residual values remain strong, bolstered by consistent demand from enthusiasts who prize the V8 character. Servicing is handled through the robust Mercedes dealer network, ensuring that specialists are always within reach, though owners must prepare for high costs associated with performance-grade brakes and tyres. Annual maintenance of £1,600 is standard for the class. Insurance costs reflect the car’s high performance and the complexity of its mechanical components, yet the model remains a prized inclusion in the garages of those who value pure engagement.

The 992.2 Targa 4 GTS combines the Targa roof system with the newer T-Hybrid powertrain. Service requirements must be checked against the exact model year and market. Its electric turbocharger and transmission-integrated motor distinguish its servicing needs from the earlier GTS. Warranty and repair costs depend on the applicable contract, vehicle history and market.

Head-to-head, the division is clear: the Mercedes-AMG GT 63 4MATIC+ Coupe — Mercedes dealer network comprehensive; AMG GT well-supported globally; the Porsche 911 Targa 4 GTS — Reliable Porsche drivetrain; servicing is supported by a comprehensive dealer network infrastructure. Characteristic of the Mercedes-AMG GT 63 4MATIC+ Coupe: AMG GT has strong used market demand; values hold well. For the Porsche 911 Targa 4 GTS: Strong resale market; combination of Targa style and GTS performance maintains desirability. On the wallet the two diverge at £155,000 versus £145,000 — a £10,000 difference, with annual maintenance of £1,600 against £1,500.

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