In many ways, these models seem completely different. Alfa Romeo uses a Ferrari-tuned V6 while Mercedes stuck a V8 under the hood. However, they have the same power output of 510 HP. At the same time, the AMG model is about 200 kilograms heavier, so you'd think it's bad at handling. But last year, it took the Nurburgring lap record from the Stelvio. What?
You can't know anything for sure these days. Hopefully, drag racing is simple enough to let us find out which is the fastest in a straight line. Top Gear made it happen three months ago, but we didn't like how they only dead one run. Lovecars did a better job in that regard, and the man behind the wheel of the German model is former Top Gear host Tiff Needell.
It all starts with a quick discussion about power-to-weight ratios and the role played by torque, which the V8 AMG obviously has more of. And in the first race, Tiff shows how the GLC 63 is slightly quicker at launch even without launch control. The second heat doesn't lead to anything while the third barely favors the Alfa Romeo. At higher speeds, the Italian is nudging ahead, which we think is due to its aerodynamic profile.
Most drag races are won or lost at the start, but the Alfa is more of a sports car than its rival. Still, the GLC 63 S is easier to tune and has a more prestigious badge for which you'll have to pay about 10% extra.
