Alfa Romeo Giulia Quadrifoglio vs Mercedes AMG vs BMW M3 Comparison

If you’re looking for a high-performance luxury sports sedan, the three most popular options in their segment include the Alfa Romeo Giulia Quadrifoglio, Mercedes-Benz AMG C 63 S, and the BMW M3 sedan. Each of these vehicles offers upscale interior appointments, striking design, and blistering performance capabilities. As familiar rivals, these three sports sedans share several similarities that can make your decision more difficult. Alfa Romeo Louisville has assembled this useful competitive comparison between the Giulia Quadrifoglio, AMG C 63 S, and M3 to highlight key differences between each other. Let’s take a closer look.
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2021 Alfa Romeo Giulia Quadrifoglio | VS | 2021 Mercedes-Benz AMG C 63 S Sedan | 2021 BMW M3 Competition |
$75,250 | Starting MSRP | $76,200 | $72,800 |
505 ✔ | Horsepower | 503 | 503 |
3.8 seconds | 0 – 60 Time | 3.9 seconds | 3.8 seconds |
191 MPH ✔ | Top Speed | 180 MPH | 180 MPH |
8 | Transmission Speeds | 7 | 8 |
Brembo 4-Wheel Disc ✔ | Brakes | 4-Wheel Disc | 4-Wheel Disc |
Standard with Voice Activation | Navigation System | Optional | Standard with iDrive |
Standard ✔ | Heated Steering Wheel | Not Available | Not Available |
15 | Number of Speakers | 13 | 16 |
Front and Rear ✔ | Parking Sensors | Optional | Optional |
42.4 inches ✔ | Front Legroom | 41.7 inches | 41.6 inches |
12 | Number of Driver’s Seat Adjustments | 10 | 14 |

Value & Performance
The Giulia Quadrifoglio is priced nearly a thousand dollars less than the AMG C 63 S, while both vehicles are priced above BMW’s less costly M3. Although the BMW may hold an advantage in starting price, it also lags behind the Alfa Romeo and Mercedes-Benz in terms of performance. When looking at performance, Alfa Romeo’s Giulia Quadrifoglio takes a decisive lead in this comparison. Simply put, neither competitor can match the Giulia Quadrifoglio’s top speed or horsepower numbers.
Additionally, the Giulia Quadrifoglio has an advanced 8-speed transmission and superior stopping power from standard Brembo brakes — both of which are key advantages on the track. Whether on a street or a front straightaway at the track, those searching for the ultimate in performance thrills should look no further than Alfa Romeo.
Technology and Interior Features
Turning our attention towards standard equipment, the Alfa Romeo Giulia Quadrifoglio continues to excel. Perfect for those chilly mornings, Alfa Romeo drivers will enjoy a standard heated steering wheel — a feature that’s unavailable at Mercedes-Benz and a costly option at BMW. Only BMW can match the Giulia Quadrifoglio for the number of driver’s seat adjustments and voice-activated navigation system, while Mercedes-Benz trails behind in those categories.
Standard front-and-rear parking sensors take the guesswork out of maneuvering the Giulia Quadrifoglio into a tight space. Mercedes-Benz and BMW owners will have to pay extra for this convenience. Finally, all front-seat occupants will find themselves more comfortable in the Giulia Quadrifoglio which offers the greatest front legroom of this bunch.


Winner – Giulia Quadrifoglio
The clear winner in this face-off appears to be Alfa Romeo’s Giulia Quadrifoglio. The Mercedes-Benz AMG C 63 S and BMW M3 simply cannot measure up to the impressive performance and outstanding value offered by the Giulia Quadrifoglio. Now that you’ve found which model wins out, Alfa Romeo Louisville invites you to explore our inventory of Alfa Romeo Giulia models to find the perfect one for you!