Audi TT RS Coupé vs Mercedes-AMG C 63 S Saloon
Compare the Audi TT RS Coupé vs Mercedes-AMG C 63 S Saloon. The Audi TT RS Coupé is £26,000 cheaper. The Audi TT RS Coupé is 0.3s quicker to 60mph. The Audi TT RS Coupé is more fuel efficient. Full performance, cost & ownership breakdown.
The Audi TT RS Coupé is priced from £38,000, powered by a 2.5L Turbo I5, producing 394 hp, with 480 Nm of torque, reaching 0-62 mph in 3.7 s, a top speed of 155 mph (standard limiter), sent to the road via all-wheel drive. The Mercedes-AMG C 63 S Saloon is priced from £55,000, powered by a 4.0L Twin-Turbo V8, producing 503 hp, with 700 Nm of torque, reaching 0-62 mph in 4 s, a top speed of 180 mph, sent to the road via rear-wheel drive.
The Audi TT RS Coupé offers a 305-litre boot, folding rear seats, runs on petrol, returns around 32 mpg, is covered by a 3 years / 60,000 miles (original UK cover; first 2 years unlimited) warranty. The Mercedes-AMG C 63 S Saloon offers a 435-litre boot, folding rear seats, 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 TT RS Coupé is £26,000 cheaper than its rival, the Audi TT RS Coupé costs less in annual maintenance (£1,000 versus £1,100), the Audi TT RS Coupé is the more fuel-efficient choice, the Audi TT RS Coupé has 55 L fuel tank.
Driving Character: Audi TT RS Coupé vs Mercedes-AMG C 63 S Saloon
The TT RS is defined by its 2.5L five-cylinder engine, a characterful powerhouse that delivers 394 hp and a distinctive, off-beat exhaust note. Paired with Quattro AWD and magnetic ride control, it offers a compact, highly focused sports car experience that is as exciting as it is precise. The turn-in is sharp, and the grip levels are immense, allowing the car to punch out of corners with genuine urgency. While there is a hint of turbo lag at lower revs, the engine’s willingness to climb through the range ensures that the driving experience remains consistently engaging and punchy.
The W205 facelift C 63 S Saloon combines a 375 kW V8 with rear-wheel drive. Its MCT gearbox uses a wet start-off clutch. Adaptive damping and an electronic rear differential support its performance character. This entry represents the petrol V8 saloon.
Head-to-head, the division is clear: the Audi TT RS Coupé — 2.5L turbo five-cylinder engine; produces a unique acoustic signature and strong pull; the Mercedes-AMG C 63 S Saloon — 4.0-litre twin-turbo V8 and rear-wheel drive. Characteristic of the Audi TT RS Coupé: AWD stability; manages engine torque effectively during aggressive corner exit manoeuvres. For the Mercedes-AMG C 63 S Saloon: Nine-speed MCT gearbox and electronically controlled rear differential. In outright terms it is 394 hp against 503 — a 109 hp gap — and the Audi TT RS Coupé reaches 60 mph 0.3s sooner.
Interior & Cabin: Audi TT RS Coupé vs Mercedes-AMG C 63 S Saloon
Inside, the TT RS is a masterclass in driver-centric design. The cabin is compact, stripping away unnecessary clutter to focus on the essential driving experience. The Virtual Cockpit remains a highlight, offering customisable RS-specific displays that keep the driver fully informed without requiring them to glance away from the road. Audi’s choice of materials is excellent, with high-quality finishes and supportive sports seats standard. While the rear seats are vestigial and only suitable for luggage or very occasional use, the cockpit itself feels perfectly tailored for the enthusiast, reinforcing the car’s focused intent.
The cabin follows the W205 dashboard layout. It uses a separate central infotainment display and centre-console controls. Trim and seat specifications depend on equipment. Portrait MBUX and W206 hybrid descriptions have been removed.
Head-to-head, the division is clear: the Audi TT RS Coupé — Minimalist dashboard layout; absence of central screen enhances focus on essential driving; the Mercedes-AMG C 63 S Saloon — Four-door W205 cabin with separate central display. Characteristic of the Audi TT RS Coupé: High-quality soft-touch plastics and leather; cabin remains robust despite daily use. For the Mercedes-AMG C 63 S Saloon: Facelift instrument and steering-wheel controls; equipment varies by car.
Daily Usability: Audi TT RS Coupé vs Mercedes-AMG C 63 S Saloon
For a performance coupe, the TT RS is surprisingly usable in day-to-day conditions. Its compact footprint makes navigating busy urban centres a breeze, and parking is rarely a source of stress compared to larger performance cars. The 305L boot space is adequate for a weekend getaway, provided one packs efficiently. While the ride can be firm in Sport mode, it is easily moderated for more comfortable daily driving. The primary challenge is limited rear visibility due to the small rear window and the low roofline, which demands a more observant approach when navigating complex junctions.
The UK specification lists a 435-litre boot. The four-door body supports daily passenger use. This V8 model has no plug-in charging or electric-only mode.
Head-to-head, the division is clear: the Audi TT RS Coupé — Hatchback body style; 305L boot expands significantly with rear seats folded down; the Mercedes-AMG C 63 S Saloon — Five-seat saloon layout and 435-litre boot. Characteristic of the Audi TT RS Coupé: Compact 11.2m turning circle; highly manoeuvrable in dense urban traffic environments. For the Mercedes-AMG C 63 S Saloon: 11.8-metre turning circle in the UK brochure. that means 305 litres of boot space against 435, and everyday running costs that favour the Audi TT RS Coupé at the pumps.
Ownership: Audi TT RS Coupé vs Mercedes-AMG C 63 S Saloon
Owning a TT RS is a unique proposition, especially now that production has concluded. The five-cylinder engine is well-supported by Audi’s dealer network, but as the model ages, specific TT-related components may become harder to source. Enthusiast interest in the final iteration of this legendary powertrain keeps residual values strong, making it a potentially savvy long-term purchase. Maintenance costs are reasonable for the performance class, and the car's fuel economy is better than many rivals. It is a machine that rewards its owner with an emotive, character-filled experience that is becoming increasingly rare in the automotive world.
This is a petrol V8 ownership profile. Hybrid battery warranty and electric-range claims do not apply. Existing price history is retained for the separate pricing review.
Head-to-head, the division is clear: the Audi TT RS Coupé — Proven MQB platform reliability; widely available parts keep annual maintenance costs manageable; the Mercedes-AMG C 63 S Saloon — Mercedes-Benz servicing and AMG component support. Characteristic of the Audi TT RS Coupé: Strong enthusiast following; specific appeal of five-cylinder engine aids market liquidity. For the Mercedes-AMG C 63 S Saloon: Confirm service history, tyres and brake specification on the individual car. On the wallet the two diverge at £38,000 versus £55,000 — a £17,000 difference, with annual maintenance of £1,000 against £1,100, 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).