Compare the2025 Mercedes AMG C-Class SedanVS 2024 Alfa Romeo Giulia Quadrifoglio

Safety
Warranty
Reliability
Engine
Fuel Economy and Range
Transmission
Brakes and Stopping
Tires and Wheels
Suspension and Handling
Chassis
Passenger Space
Cargo Capacity
Ergonomics
Recommendations

Safety

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For enhanced safety, the front and rear seat shoulder belts of the Mercedes AMG C-Class Sedan have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Alfa Romeo Giulia Quadrifoglio doesn’t offer pretensioners for its rear seat belts.

The AMG C-Class Sedan’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Giulia Quadrifoglio doesn’t offer pre-crash pretensioners.

For enhanced safety, the front seat shoulder belts of the Mercedes AMG C-Class Sedan are height-adjustable to accommodate a wide variety of driver and passenger heights. A better fit can prevent injuries and the increased comfort also encourages passengers to buckle up. The Alfa Romeo Giulia Quadrifoglio doesn’t offer height-adjustable seat belts.

In the past twenty years hundreds of infants and young children have died after being left in vehicles, usually by accident. When turning the vehicle off, drivers of the AMG C-Class Sedan are reminded to check the back seat if they opened the rear door before starting out. The Giulia Quadrifoglio doesn’t offer a back seat reminder.

The AMG C-Class Sedan has a standard front seat center airbag, which deploys between the driver and front passenger, protecting them from injuries caused by striking each other in serious side impacts. The Giulia Quadrifoglio doesn’t offer front seat center airbags.

The AMG C-Class Sedan has a standard Post Collision Brake, which automatically applies the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The Giulia Quadrifoglio doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.

Over 200 people are killed each year when backed over by motor vehicles. The AMG C-Class Sedan offers an optional Maneuvering Brake Function that uses rear sensors to monitor for objects to the rear and automatically applies the brakes to prevent a collision. The Giulia Quadrifoglio doesn’t offer backup collision prevention brakes.

The AMG C-Class Sedan has all-wheel drive to maximize traction under poor conditions, especially in ice and snow. The Giulia Quadrifoglio doesn’t offer all-wheel drive.

Earlier warning of stopped traffic, traffic signals, dangerous road conditions, weather, or accidents, can keep driver's safer and prevent crashes. The AMG C-Class Sedan offers optional Car-to-X Communication, a system that seemlesly communicates important warnings to the driver about impending danger, if they're available. The Giulia Quadrifoglio doesn’t offer a system that can receive automated systems from infrastructure or other vehicles.

The AMG C-Class Sedan has a standard Surround View System to allow the driver to see objects all around the vehicle on a screen. The Giulia Quadrifoglio only offers a rear monitor and front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.

Both the AMG C-Class Sedan and Giulia Quadrifoglio have rear cross-traffic warning, but the AMG C-Class Sedan has Active Brake Assist (automatically applies the brakes) to better prevent a collision when backing near traffic. The Giulia Quadrifoglio’s Rear Cross-Path Detection doesn’t automatically brake.

Both the AMG C-Class Sedan and the Giulia Quadrifoglio have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, blind spot warning systems, rearview cameras, rear cross-path warning and available lane departure warning systems.

The Mercedes AMG C-Class Sedan achieved a “Top Safety Pick” rating from the Insurance Institute for Highway Safety (IIHS) for the 2024 model year. This recognition was based on its impressive performance in the small overlap frontal crash test, updated side impact crash test, headlight evaluations, and pedestrian crash prevention testing. The Giulia Quadrifoglio has not yet been fully evaluated by the IIHS for 2024.

Warranty

There are over 3 times as many Mercedes dealers as there are Alfa Romeo dealers, which makes it much easier should you ever need service under the AMG C-Class Sedan’s warranty.

Reliability

J.D. Power and Associates’ 2024 Initial Quality Study of new car owners surveyed provide the statistics that show that Mercedes vehicles are better in initial quality than Alfa Romeo vehicles. With 20 fewer problems per 100 vehicles, JD Power ranks Mercedes higher than Alfa Romeo.

Engine

The AMG C 63 S E’s standard 2.0 turbo 4-cylinder hybrid produces 166 more horsepower (671 vs. 505) and 309 lbs.-ft. more torque (752 vs. 443) than the Giulia Quadrifoglio’s 2.9 turbo V6.

As tested in Car and Driver the AMG C 63 S E is faster than the Alfa Romeo Giulia Quadrifoglio:

	AMG C-Class Sedan	Giulia Quadrifoglio
Zero to 60 MPH	2.9 sec	3.6 sec
Zero to 100 MPH	7.1 sec	8.1 sec
5 to 60 MPH Rolling Start	3.6 sec	4.2 sec
Passing 30 to 50 MPH	2.3 sec	2.5 sec
Passing 50 to 70 MPH	2.4 sec	2.8 sec
Quarter Mile	11.2 sec	11.9 sec

Fuel Economy and Range

On the EPA test cycle the AMG C 63 S E running on electricity gets better mileage than the Giulia Quadrifoglio (36 city/38 hwy MPGe vs. 17 city/25 hwy).

On the EPA test cycle the AMG C-Class Sedan running its gasoline engine gets better mileage than the Giulia Quadrifoglio:

			MPG
AMG C-Class Sedan
	AWD	AMG C 43 2.0 turbo 4-cyl. Hybrid	19 city/27 hwy
		63 S E 2.0 turbo 4-cyl. Hybrid	18 city/25 hwy
Giulia Quadrifoglio
	RWD	2.9 turbo V6	17 city/25 hwy

The AMG C 63 S E can travel with zero emissions for 7 miles. The Giulia Quadrifoglio can’t move without running its internal combustion engine.

Regenerative brakes improve the AMG C-Class Sedan’s fuel efficiency by converting inertia back into energy instead of wasting it. The Giulia Quadrifoglio doesn’t offer a regenerative braking system.

The AMG C-Class Sedan’s standard fuel tank has 2.1 gallons more fuel capacity than the Giulia Quadrifoglio (17.4 vs. 15.3 gallons).

Transmission

A nine-speed automatic (SMG) is standard on the Mercedes AMG C-Class Sedan, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the Giulia Quadrifoglio.

The AMG C-Class Sedan offers a standard sequential manual gearbox (SMG). With no clutch pedal to worry about and a fully automatic mode, an SMG is much more efficient than a conventional automatic but just as easy to drive. The Giulia Quadrifoglio doesn’t offer an SMG or a conventional manual transmission.

The AMG C-Class Sedan’s launch control uses engine electronics to hold engine RPM’s at 4000 in order to provide the most stable and rapid acceleration possible, using all of the available traction. The Giulia Quadrifoglio doesn’t offer launch control.

Brakes and Stopping

For better stopping power the AMG C-Class Sedan’s front brake rotors are larger than those on the Giulia Quadrifoglio:

	AMG C 43	AMG C 63 S E CCB	Giulia Quadrifoglio
Front Rotors	14.6 inches	15.8 inches	14.2 inches
Rear Rotors	12.6 inches	14.5 inches	13.8 inches

The AMG C-Class Sedan offers optional heat-treated ceramic brake rotors, which last ten to twenty times as long as conventional cast iron rotors, don’t rust, don’t fade during repeated high speed braking, and their lighter weight contribute to better braking, handling and acceleration. The Giulia Quadrifoglio doesn’t offer ceramic brake rotors.

The AMG C-Class Sedan stops much shorter than the Giulia Quadrifoglio:

	AMG C-Class Sedan	Giulia Quadrifoglio
100 to 0 MPH	281 feet	324 feet	Car and Driver
70 to 0 MPH	139 feet	157 feet	Car and Driver

Tires and Wheels

For better traction, the AMG C 63 S E’s optional front tires are larger than the largest tires available on the Giulia Quadrifoglio (265/35R20 vs. 245/35R19).

For better ride, handling and brake cooling the AMG C-Class Sedan offers optional 20-inch wheels. The Giulia Quadrifoglio’s largest wheels are only 19-inches.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires available on the AMG C-Class Sedan can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The Giulia Quadrifoglio doesn’t offer run-flat tires.

Suspension and Handling

The AMG C-Class Sedan’s drift compensation steering can automatically compensate for road conditions which would cause the vehicle to drift from side to side, helping the driver to keep the vehicle straight more easily. The Giulia Quadrifoglio doesn’t offer drift compensation steering.

For a smoother ride and more stable handling, the AMG C-Class Sedan’s wheelbase is 1.8 inches longer than on the Giulia Quadrifoglio (112.8 inches vs. 111 inches).

For better handling and stability, the average track (width between the wheels) on the AMG C-Class Sedan is 2.5 inches wider in the front than the track on the Giulia Quadrifoglio.

The AMG C 63 S E handles at .99 G’s, while the Giulia Quadrifoglio pulls only .96 G’s of cornering force in a Car and Driver skidpad test.

Chassis

As tested by Car and Driver while under full throttle, the interior of the AMG C 63 S E is quieter than the Giulia Quadrifoglio (78 vs. 81 dB).

Passenger Space

The AMG C-Class Sedan has 2.4 inches more front headroom, .2 inches more front shoulder room, .9 inches more rear legroom and 2 inches more rear shoulder room than the Giulia Quadrifoglio.

Cargo Capacity

With its sedan body style, locking rear seatbacks and remote trunk release lockout, the AMG C-Class offers cargo security. The Giulia Quadrifoglio’s non-lockable remote release defeats cargo security.

To make loading and unloading groceries and cargo easier when your hands are full, the AMG C-Class Sedan’s power trunk can be opened or closed just by kicking your foot under the back bumper, leaving your hands completely free. The Giulia Quadrifoglio doesn’t offer a power or hands-free opening trunk.

Ergonomics

Unlike the driver-only memory seat and mirrors in the Giulia Quadrifoglio, the AMG C-Class Sedan has standard driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.

The AMG C-Class Sedan offers an optional heads-up display that projects speed, tachometer, warning and navigation instruction readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The Giulia Quadrifoglio doesn’t offer a heads-up display.

If the windows are left open on the AMG C-Class Sedan the driver can close them all at the outside door handle or from a distance using the remote. On a hot day the driver can lower the windows from a distance using the keyless remote. The driver of the Giulia Quadrifoglio can only operate the windows from inside the vehicle, with the ignition on.

The AMG C-Class Sedan’s standard Keyless-Go allow you to unlock the doors from any outside door handle, open the trunk, and start the car, all without removing the key from the pocket or purse. Keyless-Enter-n-Go standard on the Giulia Quadrifoglio doesn’t offer a sensor on the rear doors, so you’ll have to reach a front handle to unlock the rear door.

Heated windshield washer fluid is standard on the AMG C-Class Sedan to defrost the washer nozzles and quickly clear ice and frost from the windshield without scraping. The Giulia Quadrifoglio doesn’t offer heated windshield washer fluid. Its standard heated washer nozzles will defrost the washer fluid but not the windshield.

A power rear sunshade and manual rear side window sunshades are standard in the AMG C-Class Sedan to help block heat and glare for the rear passengers. The Giulia Quadrifoglio doesn’t offer a rear or rear side window sunshades.

When the AMG C-Class Sedan is put in reverse, the passenger rearview mirror tilts from its original position. This gives the driver a better view of the curb during parallel parking maneuvers. Shifting out of reverse puts the mirror into its original position. The Giulia Quadrifoglio’s mirror doesn’t automatically adjust for backing.

Optional air-conditioned seats in the AMG C-Class Sedan keep the driver and front passenger comfortable and take the sting out of hot seats in Summer. The Giulia Quadrifoglio doesn’t offer air-conditioned seats.

The AMG C-Class Sedan has a 115-volt a/c outlet on the center console, allowing you to recharge a laptop or run small household appliances without special adapters that can break or get misplaced. The Giulia Quadrifoglio doesn’t offer a house-current electrical outlet.

The AMG C-Class Sedan’s Active Parking Assist can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. The Giulia Quadrifoglio doesn’t offer an automated parking system.

Recommendations

The Mercedes C-Class outsold the Alfa Romeo Giulia by over 9 to one during 2023.