http://www.motortrend.com/features/m...s/viewall.html
Motor Trend lists 20 lightest cars in US (link above), and yes (spoiler) Mirage is #1. Other notable mention:
18. Scion FR-S 2,758 pounds (2,806 pounds with 6AT)
13. Ford Fiesta 2,537 pounds
12. Honda Fit 2,513 pounds (2,642 pounds for EX-L trim)
11. Toyota Prius C 2,500 pounds
10. Hyundai Accent 2,480 pounds (MT)
8. 2016 Nissan Versa/Versa Note 2,396 pounds (2,523 pounds for the Versa Note SR)
7. 2016 Scion iA 2,385 pounds (2,416 pounds with 6AT)
6. 2016 Fiat 500 2,366 pounds
4. 2016 Toyota Yaris 2,315 pounds (2,335 pounds with 4AT)
3. 2016 Chevrolet Spark 2,246 pounds (2,312 lbs with CVT)
2. 2016 Smart Fortwo 1,984 pounds (2,053 pounds with 6-speed dual-clutch transmission)
1. 2015 Mitsubishi Mirage 1,973 pounds (2,051 pounds for the ES trim with CVT)