I bought my 2016 Scion iA new from the Toyota dealership. I drove it 2 years and my battery started dying. I went to Advance Auto store to have it checked and buy a new one. The clerk checked on the computer and said the car needed a minimum of 500 cold cranking amps. She went to take my old one out and ALAS! MY BATTERY FROM THE DEALERSHIP WAS A 300 COLD CRANKING AMP. UNBELIEVABLE. Now my car has power and actually will keep my phone charged!