The V-6 engine is essentially two 3-cylinders joined together.
The 2.9-liter V-6 produces 505 horsepower and 443 pound-feet of torque. It has a 90-degree V and delivers torque like an old-school turbocharged engine, with boost building until 4,000 rpm before it blasts you into the sunset. The sound is beyond interesting, and like nothing else on the road. Why? Because this V-6 is essentially two 3-cylinder engines put together much like Bentley's W-12, which is two Volkswagen VR6 engines stitched together. What's more, this Alfa V-6 doesn't have a balance shaft like most other V-6 engines, this too contributes to that wondrous sound emitting from the quad exhaust pipes.
It takes a minimum of two clicks to change to your favorite radio station.
If you're in the infotainment system's main menu, it takes a minimum of scrolling and then at least three clicks of the controller to select a radio preset. Happen to have the infotainment screen on the radio view? It'll still requires a minimum of two clicks to select a new preset. The buttons on the steering wheel don't change between your presets; instead they change to the next station. If you change radio stations every few songs, this can become quite annoying.
Race Mode is awesome.
Most cars don't encourage you to drive with the transmission in manual mode, but the Giulia Quadrifoglio does when put it into Race mode. It claims this will provide you with the best experience. Race mode also automatically turns off all the safety systems (within reason--you aren't about to lose anti-lock brakes), so you can slide the Giulia sideways. This is also the only way to run the exhaust system with the electronic baffles open at all times for that extra special noise. We wish you could automatically open those without fully disengaging the safety systems.
The rear seat isn't bad.
This isn't a large car, and that means the rear seat isn't exactly huge. That said, at 5-foot 10-inches, I fit just fine behind myself with plenty of room for my knees, legs, and head. The real issue is getting in and out. The rear door opening is rather small, making ingress and egress rather difficult.
Steering is razor sharp.
Few cars have steering that is this brilliant in today's marketplace. With a lightning quick 11.8:1 ratio, the smallest of inputs make large changes. Taking a clover leaf on the highway? You'll barely need to turn the steering wheel a quarter turn.
Bonus: You're going to want one.
I wouldn't recommend driving a Giulia Quadrifoglio unless you plan on buying one. Why? You'll want one, badly. It has feel to go with its performance. We wish the Germans were still building their sport sedans like that. Sure, there's the question as to how reliable it'll be, but that's almost part of the charm, right?