RS3 vs A45 AMG: Compact Rocket Battle

The compact performance sedan showdown: Audi's turbocharged five-cylinder versus Mercedes-AMG's record-breaking turbo-four. Both deliver supercar-shaming performance in practical packages.

Engine Wars

Audi RS3 (2.5L Turbo-5):
401 hp and 369 lb-ft from the legendary five-cylinder. This engine traces lineage to the original Quattro rally car. The distinctive sound—between a four and a V8—is instantly recognizable.

Mercedes-AMG A45 S (2.0L Turbo-4):
416 hp and 369 lb-ft from the most powerful series production four-cylinder in history. A technological masterpiece with twin-scroll turbo and sophisticated engine management.

Advantage: A45 - Slightly more power, but the RS3's five-cylinder sound is irreplaceable.

All-Wheel Drive

RS3:
Quattro with rear-biased torque vectoring. Can send up to 100% of torque to the rear axle via the RS torque splitter. Allows genuine oversteer.

A45 S:
4MATIC+ with fully variable torque distribution. Drift mode sends more power rearward. Both systems are among the most sophisticated AWD setups available.

Advantage: Draw - Both offer exceptional AWD with adjustable rear bias.

Character & Feel

RS3:
The five-cylinder defines this car. The noise, the character, the heritage—it all creates an emotional connection. Less aggressive suspension makes it more comfortable daily.

A45 S:
More aggressive, more focused, more demanding. The hatchback body style offers better practicality. Interior quality is exceptional with the latest MBUX.

The Numbers

Both achieve 0-60 in approximately 3.8 seconds. Both are electronically limited to 155 mph (174 mph with packages). On paper, they're nearly identical.