We're generally of the mindset that our transportation future will include many varieties of vehicles working en masse-from bikes to buses to high-speed rails and even our own two feet-to get us from here to there. In the mean time, many of us still find ourselves in need of automobiles, and some of us need new automobiles. With that in mind, we present this list of the 15 most fuel-efficient cars, ranked by city miles per gallon, that you can actually buy this year.15. The Hyundai Elantra Blue (manual)Miles per gallon: 26 city, 35 highwayManufacturer's Suggested Retail Price: $14,14514. Mini Cooper (manual)MPG: 28 city, 37 highwayMSRP: $19,50013. Toyota Yaris (manual)MPG: 29 city, 36 highwayMSRP: $12,90512. Volkswagen Jetta TDI (manual)MPG: 30 city, 41 highwayMSRP: $22,83012. Volkswagen Golf TDI (manual)MPG: 30 city, 41 highwayMSRP: $22,354 for Golf10. Volkswagen Jetta SportWagen TDI (automatic)MPG: 30 city, 42 highwayMSRP: $24,61510. Audi A3 (automatic)MPG: 30 city, 42 highwayMSRP: $27,2708. Smart For-Two Coupe or Convertible (both automatic)MPG: 33 city, 41 highwayMSRP: $11,9907. Ford Escape (and Mazda Tribute) Hybrid (both automatic, and both SUVs!)MPG: 34 city, 31 highwayMSRP: $29,1756. Nissan Altima Hybrid (automatic)MPG: 35 city, 34 highwayMSRP: $26,6505. 2010 Lexus HS 250h (automatic)MPG: 35 city, 34 highwayMSRP: $34,6504. Honda Insight Hybrid (automatic)MPG: 40 city, 43 highwayMSRP: $19,8003. Honda Civic Hybrid (automatic)MPG: 40 city, 45 highwayMSRP: $23,8002. Ford Fusion (and Mercury Milan) Hybrid (automatic)MPG: 41 city, 36 highwayMSRP: $27,9501. Toyota Prius (automatic)MPG: 51 city, 48 highwayMSRP: $22,800There you have it. I'll go out on a limb and say you can probably haggle your way into a decent deal on a Toyota in the next few months. Also, if you're interested, you can calculate gallons per mile here (we recommend gallons per 10,000 miles).