Blog
Super Sedan Showdown
Alfa Romeo Giulia Quadrifoglio vs. BMW M4 Competition vs. Cadillac CT4-V Blackwing vs. Audi RS4 Avant Competition vs. Mercedes-AMG C63 S
When it comes to high-performance sports sedans, few cars can match the excitement, precision, and sheer driving pleasure of these five contenders:
- Alfa Romeo Giulia Quadrifoglio
- BMW M4 Competition
- Cadillac CT4-V Blackwing
- Audi RS4 Avant Competition
- Mercedes-AMG C63 S
Each of these machines represents the pinnacle of their brand’s engineering, combining raw power, precise handling, and everyday usability. In this ultimate comparison test, we’ll evaluate them based on performance, handling, interior quality, technology, practicality, and overall driving experience.
1. Engine and Performance Comparison
| Model | Engine | Horsepower | Torque | 0-60 mph | Top Speed |
|---|---|---|---|---|---|
| Alfa Romeo Giulia Quadrifoglio | 2.9L Twin-Turbo V6 | 505 hp | 443 lb-ft | 3.8 sec | 191 mph |
| BMW M4 Competition | 3.0L Twin-Turbo I6 | 503 hp | 479 lb-ft | 3.4 sec | 180 mph |
| Cadillac CT4-V Blackwing | 3.6L Twin-Turbo V6 | 472 hp | 445 lb-ft | 3.9 sec | 189 mph |
| Audi RS4 Avant Competition | 2.9L Twin-Turbo V6 | 444 hp | 443 lb-ft | 3.7 sec | 174 mph |
| Mercedes-AMG C63 S | 4.0L Twin-Turbo V8 | 503 hp | 516 lb-ft | 3.3 sec | 180 mph |
Verdict:
- The Mercedes-AMG C63 S has the most torque, making it the most brutal off the line.
- The BMW M4 Competition is the quickest to 60 mph, thanks to its AWD system.
- The Alfa Romeo Giulia Quadrifoglio boasts the highest top speed.
- The Cadillac CT4-V Blackwing is the only one available with a manual transmission for purists.
- The Audi RS4 Avant Competition is the only wagon, offering extra practicality.
2. Handling and Driving Dynamics
Each car brings a unique approach to driving dynamics:
- Giulia Quadrifoglio – The lightest of the group, with razor-sharp steering and an exceptional chassis balance. Rear-wheel drive provides a lively, engaging experience.
- BMW M4 Competition – Comes in RWD or AWD, with an aggressive suspension setup. Precise but a bit firm for daily comfort.
- Cadillac CT4-V Blackwing – Brilliant chassis tuning and magnetic ride control make it a joy to push hard. More playful than its German rivals.
- Audi RS4 Avant Competition – Quattro AWD offers supreme grip, but it’s heavier than the rest, making it feel more stable than playful.
- Mercedes-AMG C63 S – The V8 makes it a torque monster, but it’s the heaviest of the group, affecting agility compared to the Alfa and BMW.
Verdict:
- Best Handling: Giulia Quadrifoglio – light, sharp, and agile.
- Most Playful: Cadillac CT4-V Blackwing – fun, engaging, and available with a manual gearbox.
- Best Grip: Audi RS4 Avant Competition – Quattro traction is unbeatable.
- Most Powerful Feeling: AMG C63 S – brutal acceleration, but slightly heavy.
3. Interior, Technology & Comfort
| Model | Interior Quality | Tech Features | Infotainment |
|---|---|---|---|
| Alfa Romeo Giulia Quadrifoglio | Stylish but minimal | Basic ADAS, digital cluster | 8.8” touchscreen (not the best UI) |
| BMW M4 Competition | Premium, driver-focused | iDrive 8, digital cockpit | 14.9” curved screen (best tech) |
| Cadillac CT4-V Blackwing | Sporty but not as luxurious | HUD, track data recorder | 10” touchscreen, user-friendly |
| Audi RS4 Avant Competition | High-quality, ergonomic | Virtual cockpit, MMI touch | 10.1” MMI, intuitive layout |
| Mercedes-AMG C63 S | Most luxurious | Large digital displays, AMG Performance UI | 11.9” MBUX (best luxury feel) |
Verdict:
- Best Technology: BMW M4 Competition – latest iDrive system, crystal-clear displays.
- Best Luxury: Mercedes-AMG C63 S – premium materials, comfortable seats.
- Most User-Friendly Interface: Audi RS4 Avant Competition – intuitive MMI system.
- Most Driver-Focused: Cadillac CT4-V Blackwing – designed for enthusiasts.
- Most Minimalist Interior: Alfa Romeo Giulia Quadrifoglio – great design but lacks advanced tech.
4. Practicality & Cargo Space
| Model | Seating Capacity | Trunk Space | Rear Seat Comfort |
|---|---|---|---|
| Alfa Romeo Giulia Quadrifoglio | 5 | 13.4 cu ft | Decent but not spacious |
| BMW M4 Competition | 4 | 12 cu ft | Tight rear seats |
| Cadillac CT4-V Blackwing | 5 | 10.7 cu ft | Cramped rear seats |
| Audi RS4 Avant Competition | 5 | 17 cu ft (Avant body) | Most spacious |
| Mercedes-AMG C63 S | 5 | 12.6 cu ft | Good but not great |
Verdict:
- Most Practical: Audi RS4 Avant Competition – it’s a wagon!
- Best for Rear Passengers: Mercedes-AMG C63 S – better legroom than rivals.
- Tightest Rear Seats: BMW M4 Competition & CT4-V Blackwing – best for short trips.
5. Price and Value
| Model | Base Price (Approx.) | Fully Loaded Price |
|---|---|---|
| Alfa Romeo Giulia Quadrifoglio | $81,000 | $90,000 |
| BMW M4 Competition | $80,000 | $100,000 |
| Cadillac CT4-V Blackwing | $62,000 | $75,000 |
| Audi RS4 Avant Competition | $85,000 | $95,000 |
| Mercedes-AMG C63 S | $85,000 | $100,000 |
Verdict:
- Best Value: Cadillac CT4-V Blackwing – offers incredible performance at a lower price.
- Most Expensive: Mercedes-AMG C63 S – but offers premium features.
- Best Balance of Price & Performance: BMW M4 Competition & Alfa Romeo Giulia Quadrifoglio.
Final Verdict: Which One Should You Buy?
| Category | Winner |
|---|---|
| Best Performance | Mercedes-AMG C63 S |
| Best Handling | Alfa Romeo Giulia Quadrifoglio |
| Best Tech & Infotainment | BMW M4 Competition |
| Most Fun to Drive | Cadillac CT4-V Blackwing |
| Most Practical | Audi RS4 Avant Competition |
| Best Value | Cadillac CT4-V Blackwing |
Overall Winner:
- If you want the best driving experience → Alfa Romeo Giulia Quadrifoglio
- If you want the most power and luxury → Mercedes-AMG C63 S
- If you want the best tech → BMW M4 Competition
- If you want the best value & a manual → Cadillac CT4-V Blackwing
- If you need practicality → Audi RS4 Avant Competition
All five cars are incredible, but the Alfa Romeo Giulia Quadrifoglio stands out for pure driving pleasure, while the Cadillac CT4-V Blackwing offers the best performance-to-price ratio.
