Audi RS e-tron GT vs Mercedes-AMG SL 63
Compare the Audi RS e-tron GT vs Mercedes-AMG SL 63. The Audi RS e-tron GT is £40,000 cheaper. The Audi RS e-tron GT is 0.3s quicker to 60mph. The Audi RS e-tron GT is more fuel efficient. Full performance, cost & ownership breakdown.
The Audi RS e-tron GT is priced from £125,000, powered by a Dual Electric Motors, producing 637 hp, with 830 Nm of torque, reaching 0-62 mph in 3.3 s, a top speed of 155 mph, 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 RS e-tron GT offers a 350-litre boot, a usable front boot, folding rear seats, runs on electric, returns around 76 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 RS e-tron GT is £40,000 cheaper than its rival, the Audi RS e-tron GT costs less in annual maintenance (£1,000 versus £1,500), the Audi RS e-tron GT is the more fuel-efficient choice, the Audi RS e-tron GT has 83.7 kWh usable battery · 93.4 kWh gross battery, the Mercedes-AMG SL 63 has 70 L fuel tank.
Driving Character: Audi RS e-tron GT vs Mercedes-AMG SL 63
The RS e-tron GT leverages 637 hp and instant electric torque to deliver breathtaking acceleration, pinning occupants to their seats with brutal efficiency. The low centre of gravity provided by the battery pack ensures the car remains impressively flat through corners, though the sheer weight of 5139 lbs is occasionally felt in tighter, technical transitions. It lacks the raw, emotive soundtrack of a combustion-engined rival, but compensates with a refined, futuristic chassis that makes covering ground effortless. The two-speed rear gearbox provides a unique mechanical feel, bridging the gap between electric immediacy and high-speed stability.
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 RS e-tron GT — Dual-motor EV with 637hp; 0–100 in 3.1s with silent, relentless delivery; the Mercedes-AMG SL 63 — SL 63 AWD with active rear steering; more dynamic than SL predecessors. Characteristic of the Audi RS e-tron GT: Four-wheel steering available; actively improves cornering and parking ease. For the Mercedes-AMG SL 63: 577hp V8 with characteristic AMG torque delivery across the rev range. In outright terms it is 637 hp against 577 — a 60 hp gap — and the Audi RS e-tron GT reaches 60 mph 0.3s sooner.
Interior & Cabin: Audi RS e-tron GT vs Mercedes-AMG SL 63
The interior is a high-tech sanctuary, dominated by a driver-focused dashboard and the crisp Audi Virtual Cockpit. Sustainable materials are used throughout, reflecting a modern approach to luxury without compromising on build quality or feel. The digital interfaces are intuitive, though the reliance on touch-sensitive controls for certain functions can be less tactile than physical buttons while on the move. Space is ample for four adults, and the dual-screen setup creates a sophisticated, connected environment that feels perfectly suited for a high-performance electric tourer. It is a cabin that successfully blends traditional Audi craftsmanship with progressive, forward-thinking technology.
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 RS e-tron GT — Curved OLED display and digital interior class-leading at launch; the Mercedes-AMG SL 63 — Soft-top roadster with genuine 2+2 rear seats returned to SL range. Characteristic of the Audi RS e-tron GT: Four adult seats with genuine rear legroom; premium EV four-door. For the Mercedes-AMG SL 63: MBUX Hyperscreen available; most technology-forward SL interior ever.
Daily Usability: Audi RS e-tron GT vs Mercedes-AMG SL 63
Practicality is a strong suit for the RS e-tron GT, offering a 405L boot plus additional storage in the front trunk, making it an excellent daily prospect. The ride is firm in Dynamic mode but remains composed enough for long-distance cruising, absorbing motorway imperfections with ease. Charging is a simple affair, with fast-charging capabilities allowing for 80% replenishment in just over twenty minutes, significantly increasing the vehicle's real-world usability. It is a highly capable machine for routine errands and long-distance touring, provided the driver is aware of the low stance and the necessity of managing battery capacity on longer jaunts.
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 RS e-tron GT — 405L boot plus 84L frunk; 489L total — excellent for this class; the Mercedes-AMG SL 63 — Roof mechanism reliable and rapid; usable as open-top grand tourer. Characteristic of the Audi RS e-tron GT: Charging infrastructure well matched to long-distance grand touring. For the Mercedes-AMG SL 63: AWD enables year-round use in all climates; better versatility than predecessors. that means 350 litres of boot space against 213, plus a usable front boot in the Audi RS e-tron GT, and everyday running costs that favour the Audi RS e-tron GT at the pumps.
Ownership: Audi RS e-tron GT vs Mercedes-AMG SL 63
Ownership of this EV is relatively straightforward, as the simplicity of the electric drivetrain results in lower annual maintenance costs than its internal combustion rivals. The four-year, 50k mile warranty provides a solid foundation for peace of mind, though long-term battery health remains a key consideration for high-mileage users. The RS e-tron GT benefits from the extensive Audi dealer and charging network, making it one of the most accessible high-performance EVs on the market. While residual values for luxury EVs remain volatile, the model’s performance and build quality help maintain a solid market position among modern, tech-focused buyers.
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 RS e-tron GT — Audi dealer network strong; RS e-tron GT benefits from broad coverage; the Mercedes-AMG SL 63 — Mercedes SL has decades of reliability history; latest generation expected to continue. Characteristic of the Audi RS e-tron GT: Lower running costs versus petrol equivalents; EV servicing lighter. For the Mercedes-AMG SL 63: Broad dealer network and long-running support programmes. On the wallet the two diverge at £125,000 versus £165,000 — a £40,000 difference, with annual maintenance of £1,000 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).