Mercedes-AMG C 63 vs Audi TT RS Coupé
Compare the Mercedes-AMG C 63 vs Audi TT RS Coupé. The Audi TT RS Coupé is £26,000 cheaper. The Audi TT RS Coupé is 0.1s quicker to 60mph. The Audi TT RS Coupé is more fuel efficient. Full performance, cost & ownership breakdown.
The Mercedes-AMG C 63 is priced from £55,000, powered by a 4.0L Twin-Turbo V8, producing 503 hp, with 700 Nm of torque, reaching 0-60 mph in 3.8s, a top speed of 180 mph, sent to the road via rear-wheel drive. 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 0-60 mph in 3.7s, a top speed of 174 mph, sent to the road via all-wheel drive.
The Mercedes-AMG C 63 offers a 455-litre boot, folding rear seats, runs on petrol, returns around 26 mpg, is covered by a 3yr / unlimited mi warranty. The Audi TT RS Coupé offers a 305-litre boot, folding rear seats, runs on petrol, returns around 32 mpg, is covered by a 3yr / unlimited mi 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 (£1,100 versus £1,000), the Audi TT RS Coupé is the more fuel-efficient choice, a full tank costs around £80 for the Mercedes-AMG C 63 and £72 for the Audi TT RS Coupé.
Driving Character: Mercedes-AMG C 63 vs Audi TT RS Coupé
The Mercedes-AMG C 63 remains a titan of the executive performance segment, defined by its thunderous 4.0L twin-turbo V8. The engine delivers a character that is increasingly rare, offering an aggressive, theatrical soundscape that is amplified by the mechanical limited-slip differential. The rear-wheel-drive platform provides a traditional, tail-happy balance that rewards a skilled driver, though the sheer power output requires significant caution in adverse weather conditions. It is a car that thrives on the open road, where the balance of torque and power delivery can be fully exploited, making it a visceral, highly engaging piece of German engineering.
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.
Head-to-head, the division is clear: the Mercedes-AMG C 63 takes our 0-100 driving character grading, 84 against 76. Characteristic of the Mercedes-AMG C 63: Thunderous twin-turbo V8 with a playful, adjustable rear-drive character. For the Audi TT RS Coupé: Charismatic five-cylinder soundtrack with tenacious quattro grip. In outright terms it is 503 hp against 394 — a 109 hp gap — and the Audi TT RS Coupé reaches 60 mph 0.1s sooner.
Interior & Cabin: Mercedes-AMG C 63 vs Audi TT RS Coupé
Inside, the C 63 is a blend of high-end executive luxury and focused performance. The cabin features premium Nappa leather and DINAMICA materials, with AMG-specific detailing that differentiates it from the standard C-Class. The Performance seats provide excellent support during spirited driving while remaining comfortable for daily commuting. Infotainment is delivered through a high-resolution interface that is ergonomic and well-integrated. While the rear seats offer adequate space for adults, the overall interior environment feels sophisticated, maintaining a luxurious ambience that balances the car's extreme performance capabilities with the comfort expected of a premium Mercedes 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.
Head-to-head, the division is clear: the Audi TT RS Coupé takes our 0-100 interior & cabin grading, 76 against 78. Characteristic of the Mercedes-AMG C 63: Flamboyant, premium-feeling cabin with supportive seats. For the Audi TT RS Coupé: Compact, well-built cabin with typical Audi ergonomics.
Daily Usability: Mercedes-AMG C 63 vs Audi TT RS Coupé
Practicality is a cornerstone of the C 63's appeal, offering a 455-litre boot that handles everyday chores with ease. In Comfort mode, the suspension softens significantly, turning the car into a compliant cruiser capable of managing motorway miles without fatigue. It is a vehicle that transitions effortlessly from a daily office commuter to a weekend sports machine. The only real trade-off for this usability is the fuel consumption, which is significant under load, and the wide wheel arches and stance that can make navigating tight city streets or multi-storey car parks an exercise in careful spatial awareness.
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.
Head-to-head, the division is clear: the Audi TT RS Coupé takes our 0-100 daily usability grading, 70 against 80. Characteristic of the Mercedes-AMG C 63: Comfortable, well-isolated cruiser despite its firm setup. For the Audi TT RS Coupé: Genuinely usable small performance coupe for daily driving. that means 455 litres of boot space against 305, and everyday running costs that favour the Audi TT RS Coupé at the pumps.
Ownership: Mercedes-AMG C 63 vs Audi TT RS Coupé
Owning a C 63 is a relatively straightforward experience, thanks to the vast global Mercedes dealer network and the availability of specialist support. Maintenance is predictably expensive, with high-performance components like tyres and brakes requiring frequent attention, but the overall reliability of the powertrain is well-regarded among the community. As the industry moves toward electrification, the W205 C 63's naturally aspirated-feel V8 is increasingly seen as a desirable classic, helping to stabilise residual values. It remains a benchmark for the segment, offering a combination of daily utility and performance that continues to attract a strong, loyal owner base.
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.
Head-to-head, the division is clear: the Audi TT RS Coupé takes our 0-100 ownership grading, 66 against 80. Characteristic of the Mercedes-AMG C 63: Feels robustly screwed together. For the Audi TT RS Coupé: Strong reliability reputation, now discontinued and adding to appeal. On the wallet the two diverge at £55,000 versus £38,000 — a £17,000 difference, with annual maintenance of £1,100 against £1,000.