Audi RS7 vs Mercedes-AMG SL 63
Compare the Audi RS7 vs Mercedes-AMG SL 63. The Audi RS7 is £60,000 cheaper. The Mercedes-AMG SL 63 is 0.0s quicker to 60mph. The Audi RS7 is more fuel efficient. Full performance, cost & ownership breakdown.
The Audi RS7 is priced from £105,000, 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 Mercedes-AMG SL 63 is priced from £165,000, powered by a 4.0L Twin-Turbo V8, producing 577 hp, with 800 Nm of torque, reaching 0-62 mph in 3.6 s, a top speed of 196 mph, sent to the road via all-wheel drive.
The Audi RS7 offers a 535-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 Mercedes-AMG SL 63 offers a 213-litre boot, runs on petrol, returns around 21.9 mpg (WLTP combined), is covered by a 3 years / unlimited miles (original UK new-car cover) warranty.
On cost of ownership, the Audi RS7 is £60,000 cheaper than its rival, the Audi RS7 costs less in annual maintenance (£1,200 versus £1,500), the Audi RS7 is the more fuel-efficient choice, the Audi RS7 has 73 L fuel tank, the Mercedes-AMG SL 63 has 70 L fuel tank.
Driving Character: Audi RS7 vs Mercedes-AMG SL 63
The RS7 occupies a unique space, marrying the brutal acceleration of a 4.0L twin-turbo V8 with the visual drama of a low-slung, sweeping Sportback. With 591 hp and the advanced Quattro system, it delivers devastating straight-line performance that feels relentless and almost telepathic. All-wheel steering is standard, giving this imposing car an agility that defies its substantial weight in the corners. It is a machine designed for covering vast distances at high speed with effortless ease, providing a level of poise that turns even the most demanding road into a manageable ribbon of asphalt.
The Mercedes-AMG SL 63 transitions the lineage toward a sophisticated grand tourer profile, prioritising compliance over the surgical precision of its predecessor. The 4.0-litre twin-turbo V8 delivers a relentless surge of torque, managed by an all-wheel-drive system that ensures composure in challenging UK conditions. While the AMG Active Ride Control suspension offers remarkable poise for a heavy convertible, the steering feel remains somewhat insulated compared to pure sports cars. It excels as a high-speed cruiser rather than a track-day weapon, favouring long-distance refinement and effortless pace over the frantic, razor-sharp feedback once associated with the AMG brand.
Head-to-head, the division is clear: the Audi RS7 — 591hp V8 in Sportback body; fast estate performance at a premium; the Mercedes-AMG SL 63 — SL 63 AWD with active rear steering; more dynamic than SL predecessors. Characteristic of the Audi RS7: Quattro AWD with Sport differential; planted and fast in all weathers. For the Mercedes-AMG SL 63: 577hp V8 with characteristic AMG torque delivery across the rev range. In outright terms it is 591 hp against 577 — a 14 hp gap — and the Mercedes-AMG SL 63 reaches 60 mph 0.0s sooner.
Interior & Cabin: Audi RS7 vs Mercedes-AMG SL 63
The interior is a high-luxury environment, mirroring the technical sophistication of the RS6 but packaged within a more dramatic, coupe-like frame. The Virtual Cockpit Plus provides clear, customisable readouts, while the cabin's materials—ranging from carbon fibre to Valcona leather—exude a premium, tactile quality. Because of the raked roofline, the rear cabin feels more intimate than in the Avant version, sacrificing headroom for a more sporting aesthetic. It is undeniably a driver’s cabin, where every control feels weighted, precise, and purposefully placed to enhance the feeling of being in something truly exclusive.
Inside, the SL 63 feels thoroughly modern, dominated by a portrait-oriented MUX interface that dictates the cabin aesthetic. The digital cockpit is crisp, though the heavy reliance on touch-sensitive surfaces can feel counterintuitive when pressing on. Material quality is excellent, with high-grade leathers and metals, yet the ergonomics are compromised by the vestigial rear seats, which serve more as shelf space than viable seating. It lacks the intimate, driver-focused cocoon of the previous AMG GT, opting instead for a broad, open-air cockpit design that prioritises perceived luxury and connectivity over raw, tactile immersion.
Head-to-head, the division is clear: the Audi RS7 — Fastback Sportback gives dramatic profile with genuine four-seat practicality; the Mercedes-AMG SL 63 — Soft-top roadster with genuine 2+2 rear seats returned to SL range. Characteristic of the Audi RS7: Latest Audi MMI infotainment and Virtual Cockpit; technology class-leading. For the Mercedes-AMG SL 63: MBUX Hyperscreen available; most technology-forward SL interior ever.
Daily Usability: Audi RS7 vs Mercedes-AMG SL 63
While the RS7 is undoubtedly a performance vehicle, its Sportback design offers a practical twist. The 535L boot is more than sufficient for typical weekend trips, and the lift-back opening makes loading gear straightforward. Urban use requires awareness; its significant width and low stance mean care is needed in narrow parking structures, though the array of sensors and cameras makes it doable. In Comfort mode, the air suspension does a commendable job of masking road surface harshness, ensuring that urban traffic or motorway cruising is conducted with a sense of refined, whisper-quiet calm.
Daily utility is remarkably improved, largely due to the transition to a fully variable fabric roof that saves significant boot space and lowers the centre of gravity. The 213-litre capacity remains tight, though it accommodates soft luggage better than the old hard-top systems. Parking remains a chore; the wide, low-slung bodywork requires cautious navigation through tight urban gaps, and the extensive bonnet length demands foresight. Nevertheless, the sophisticated suspension tuning allows it to soak up poorly maintained road surfaces with grace, making it a viable, albeit thirsty, companion for regular motorway commutes and long-distance touring.
Head-to-head, the division is clear: the Audi RS7 — 535L boot with folding seats; more practical than its sporting profile suggests; the Mercedes-AMG SL 63 — Roof mechanism reliable and rapid; usable as open-top grand tourer. Characteristic of the Audi RS7: Mild hybrid system improves fuel economy on long journeys. For the Mercedes-AMG SL 63: AWD enables year-round use in all climates; better versatility than predecessors. that means 535 litres of boot space against 213, and everyday running costs that favour the Audi RS7 at the pumps.
Ownership: Audi RS7 vs Mercedes-AMG SL 63
As a flagship performance model, the RS7 commands a premium in terms of running costs. Fuel consumption is consistent with a high-output V8, and the long-term maintenance requires a dedicated budget for tyres, brakes, and scheduled service checks. Audi’s dealer network ensures that this level of care is easily accessible, and the car's desirable styling keeps residual values firm amongst performance-oriented buyers. It is a car that demands a commitment to its upkeep, but in exchange, it offers an ownership experience defined by style, speed, and the confidence that comes with a top-tier automotive engineering product.
Ownership is bolstered by the vast, well-integrated Mercedes-Benz dealer network, which provides consistent support for the complex AMG powertrain. Maintenance costs are steep, with annual services reflecting the performance-oriented nature of the twin-turbo V8, and the intricate soft-top mechanism introduces a long-term servicing variable that owners must anticipate. While depreciation is generally mitigated by the enduring prestige of the SL moniker, the market is competitive. Reliability is generally predictable, provided the rigid servicing intervals are respected, ensuring the complex electronics and drivetrain remain within optimal operating parameters throughout the ownership period.
Head-to-head, the division is clear: the Audi RS7 — Audi dealer network widest in this class; RS7 supported everywhere; the Mercedes-AMG SL 63 — Mercedes SL has decades of reliability history; latest generation expected to continue. Characteristic of the Audi RS7: Strong residuals for RS7; demand from dual-purpose buyers keeps values firm. For the Mercedes-AMG SL 63: Broad dealer network and long-running support programmes. On the wallet the two diverge at £105,000 versus £165,000 — a £60,000 difference, with annual maintenance of £1,200 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).