My i30 is about 9 months old & done 12000km. After refusing to start 3 days in a row (& needing RACQ each time) I finally got a chance to get is the a service agent today (outside work roster). They tested it & said it was faulty, so they gave me a new one for FREE, under warranty. The battery is meant to have 630CCAs & the battery only had 80CCAs.
It was funny to sit in the waiting room, to see the apprentice walk out, get in, turn the key & see the brake light pulsate... not starting

After only just parking the car there less then 30 minutes ago. Imagine the problems I would have had if it started properly.