Android Auto adoption is still growing and as of today, two more car manufacturers are adding the option to their various lineups. Mercedes and Kia have both added support Android Auto support for more than 20 new vehicles for potential owners. As for what cars will have the option from Mercedes:

2017 A-Class

2017 B-Class

2017 CLA Coupe

2017 CLA Shooting Brake

2017 GLA

2017 E-Class Wagon

2017 E-Class Coupe

2017 E-Class Cabriolet

As for what Kia models will be getting Android Auto:

2014 – 2016 Soul

2015 Optima

2015 – 2016 Optima Hybrid

2015 – 2016 Optima Plug-in Hybrid

2015 – 2016 Sedona

2015 – 2016 Soul EV

2016 Sorento

2017 Forte

2017 Optima Hybrid

2017 Optima Plug-in Hybrid

2017 Sedona

2017 Soul

2017 Soul EV

2017 Sorento

It’s also worth noting that since there are a few of these Kia vehicles are already available, you will be able to upgrade the head unit to Android Auto through a software update. You’ll just need to head to your local Kia dealer to get set up and make sure that your vehicle supports Android Auto.

[Android Auto 1, 2]