On paper the new Alfa Romeo Giulia Quadrifoglio sounds exceptional with a reasonable MSRP of $73,595. In exchange buyers will get a twin-turbocharged 2.9-liter V6 powered luxury vehicle with an output of 505 hp and 443 lb-ft of torque.
AutoAvanti managed to get their hands on one and dyno tested a rear wheel drive Giulia Quadrifoglio. Uploaded onto their Youtube channel as part 5 of their “Owning an Alfa Romeo Giulia Quadrifoglio” series, enthusiasts will be able to see just how much of that power is transferred to the wheels.
Drivetrain power loss is expected when it comes to dyno tests as the output is measured at the wheel and not at the crank which is what the auto industry published. The Giulia Quadrifoglio was no different as it took a 113 hp hit and only put down 392 rear-wheel horsepower. Torque output also showed numbers lower than those listed by Alfa Romeo at 389 lb-ft.
That may sound surprising as the power loss is on the high side of average, but the Mustang AWD Dynamometer they used may have affected the final result. Its rates are lower than that of the DynoJet or Dyno Dynamics. Some commenters asked about using a two-wheel dyno instead of an all-wheel one, but AutoAvanti says that the Giulia will go into limp mode if that happens.
You can watch the full test below and let us know what you think.