The 2025 A3 sedan is the smallest car Audi sells in North America. Still, despite its diminutive size, this compact four-door delivers a lively driving experience, one that's reminiscent of what you'll find in the brand's larger sports sedans. A 201-hp turbocharged 2.0-liter four-cylinder provides modest pep, but runs smoothly and is eager to rev. For more performance, consider the S3 (reviewed separately) which amps things up considerably with an additional 127 horsepower and sportier handling. All A3 models come with a seven-speed dual-clutch automatic transmission, but you can choose a front- or all-wheel drive layout.