Audi RS6 Avant vs Porsche 911 Targa 4 GTS
Compare the Audi RS6 Avant vs Porsche 911 Targa 4 GTS. The Audi RS6 Avant is £37,000 cheaper. The Porsche 911 Targa 4 GTS is 0.5s quicker to 60mph. The Porsche 911 Targa 4 GTS is more fuel efficient. Full performance, cost & ownership breakdown.
The Audi RS6 Avant is priced from £108,000, powered by a 4.0L Twin-Turbo V8, producing 591 hp, with 800 Nm of torque, reaching 0-62 mph in 3.6 s, a top speed of 155 mph (standard limiter), 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 Audi RS6 Avant offers a 565-litre boot, folding rear seats, runs on petrol, returns around 24 mpg, is covered by a 3 years / 60,000 miles (original UK cover; first 2 years unlimited) 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 Audi RS6 Avant is £37,000 cheaper than its rival, the Audi RS6 Avant costs less in annual maintenance (£1,100 versus £1,500), the Porsche 911 Targa 4 GTS is the more fuel-efficient choice, the Audi RS6 Avant has 73 L fuel tank, the Porsche 911 Targa 4 GTS has 63 L fuel tank.
Driving Character: Audi RS6 Avant vs Porsche 911 Targa 4 GTS
The RS6 Avant is the definitive super-estate, wielding a 4.0L twin-turbo V8 that delivers 591 hp with crushing authority. Its Quattro system and all-wheel steering work in tandem to shrink the car’s perceived size, allowing it to navigate complex B-roads with surprising ease. The power delivery is immediate, bolstered by mild-hybrid assistance that masks any hint of lag. It is a master of cross-country velocity, offering a level of grip and composure that remains unmatched in the sector. While the 4575 lbs mass is present, the chassis balance is so well-sorted that it never feels overwhelmed or ponderous.
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 Audi RS6 Avant — 591hp estate car with AWD; fastest family estate in its class; 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 Audi RS6 Avant: Air suspension and adaptive dampers span luxury to performance seamlessly. 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 591 hp against 534 — a 57 hp gap — and the Porsche 911 Targa 4 GTS reaches 60 mph 0.5s sooner.
Interior & Cabin: Audi RS6 Avant vs Porsche 911 Targa 4 GTS
The cabin is a sanctuary of technology and luxury, defined by the high-definition Virtual Cockpit Plus and exquisitely finished Valcona leather. Every surface speaks to Audi's commitment to quality, with supportive sports seats that hold the driver firmly during high-speed cornering. The interior design is sophisticated, blending sharp, angular lines with an understated elegance. Despite being a tech-forward environment, the ergonomics remain intuitive, ensuring that even complex adjustments are simple to perform. It is a space designed for long journeys, offering a sense of calm and control, even when the engine is under full load.
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 Audi RS6 Avant — Premium estate cabin with genuine rear seat space and huge load area; the Porsche 911 Targa 4 GTS — Luxury ergonomics; tech-focused cabin environment balances modern comfort with driver engagement features. Characteristic of the Audi RS6 Avant: Optional carbon, Alcantara, and sport seats; widely personalised in practice. For the Porsche 911 Targa 4 GTS: High-quality leather and trim; interior refinement provides a quiet environment when closed.
Daily Usability: Audi RS6 Avant vs Porsche 911 Targa 4 GTS
Practically, the RS6 Avant is unrivalled as a high-performance family carrier. With 565 litres of boot space, which expands significantly when the seats are folded, it is ready for almost any task. The air suspension is a revelation, offering a plush, compliant ride for family trips while firming up instantly for spirited driving. Its wide body can be a liability in tight car parks, making the camera system a mandatory tool for urban navigation. However, the sheer ease with which it traverses miles in total comfort makes it an exceptional candidate for a single-car garage.
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 Audi RS6 Avant — 565L boot with rear seats; grows to 1,680L with seats folded — best in class; 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 Audi RS6 Avant: Genuinely usable as family and performance car simultaneously. For the Porsche 911 Targa 4 GTS: 110 mm clearance ensures daily usability; ride quality absorbs common road imperfections well. that means 565 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: Audi RS6 Avant vs Porsche 911 Targa 4 GTS
Owning an RS6 Avant is an investment in unparalleled capability, though one must account for the significant running costs. With 24 mpg fuel economy and the wear associated with moving such high performance, it is not a cheap car to run. However, the Audi dealer network is top-tier, and the vehicle enjoys strong residual values, with enthusiasts constantly hunting for well-maintained examples. The annual maintenance costs are predictable for the segment, and the car's widespread support ensures longevity. For those who can stomach the fuel and service bills, it offers a level of excellence that is difficult to replicate.
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 Audi RS6 Avant — RS6 is the definitive dual-purpose performance estate; values reflect broad demand; the Porsche 911 Targa 4 GTS — Reliable Porsche drivetrain; servicing is supported by a comprehensive dealer network infrastructure. Characteristic of the Audi RS6 Avant: Audi Approved Used programme strong; wide service support. 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 £108,000 versus £145,000 — a £37,000 difference, with annual maintenance of £1,100 against £1,500, and warranty cover of 3 years / 60,000 miles (original UK cover; first 2 years unlimited) versus 3 years / unlimited miles (original UK new-car cover).