4. Mercedes-AMG A45 S
The Mercedes-AMG A45 S redefines what’s possible from a turbocharged four-cylinder. Its hand-built 2.0-liter engine produces an astonishing 416 horsepower—making it the most powerful four-cylinder in production today.
This hatchback is a true missile, rocketing from 0 to 60 mph in just 3.8 seconds, a feat that puts many V8 muscle cars to shame. Top Gear hails the A45 S as a masterpiece of engineering, blending everyday usability with supercar-rivaling acceleration.