Sporty German autos

• Audi competitors
• 328d and 520i
• Some autobahn vehicles
• Mercedes competitors
• 5 Series sedans and Z4 roadsters from Germany
• "Ultimate Driving Machine" vehicles
• German exports
• Luxury cars on the Autobahn
• German imports that are not part of this puzzle's theme

Wiktionary Word definitions in Wiktionary
n. (BMW English)