I have a 2014 Passat and recently my battery drained just enough to not start the car. I suspected that it was a combination of short trips + that feature that leaves the lights on when locking the car that drained my battery. So I turned that feature off.

After I got a jump start I drove around for 20 minutes in the city until I got home. The next morning, the start was still rather slow but it was just enough to start the engine (yay!). That day I drove about ~100 miles on the freeway. Everything is good now and the engine starts etc.

However, since I am paying more attention to it now, I noticed that in the morning (when the engine is cold) it takes slightly longer to start the engine than after I had driven it to get it warm. I do not live in a cold climate.

Is this normal?