2018 Mercedes-AMG GLA 45

What: A high-performance small hatchback.

When: On sale now.

What makes it go: A turbocharged 2-liter, 4-cylinder engine producing 375 horsepower.

How thirsty: 22 miles per gallon in the city, 28 mpg on the highway and 25 mpg overall.

How big: 14.6 feet long.

How much: Starts at $51,595 including destination fee.

Overall: A hardcore hatchback with real-deal AMG feel.